579 lines
26 KiB
LLVM
579 lines
26 KiB
LLVM
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; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
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; RUN: opt -verify-loop-info -irce-print-changed-loops -irce -S < %s 2>&1 | FileCheck %s
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; RUN: opt -verify-loop-info -irce-print-changed-loops -passes='require<branch-prob>,irce' -S < %s 2>&1 | FileCheck %s
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; CHECK-NOT: irce: in function test_01: constrained Loop
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; CHECK-NOT: irce: in function test_02: constrained Loop
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; CHECK: irce: in function test_03: constrained Loop
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; RC against known negative value. We should not do IRCE here.
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define void @test_01(i32 *%arr, i32 %n) {
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; CHECK-LABEL: @test_01(
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; CHECK-NEXT: entry:
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; CHECK-NEXT: [[FIRST_ITR_CHECK:%.*]] = icmp sgt i32 [[N:%.*]], 0
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; CHECK-NEXT: br i1 [[FIRST_ITR_CHECK]], label [[LOOP_PREHEADER:%.*]], label [[EXIT:%.*]]
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; CHECK: loop.preheader:
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; CHECK-NEXT: br label [[LOOP:%.*]]
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; CHECK: loop:
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; CHECK-NEXT: [[IDX:%.*]] = phi i32 [ [[IDX_NEXT:%.*]], [[IN_BOUNDS:%.*]] ], [ 0, [[LOOP_PREHEADER]] ]
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; CHECK-NEXT: [[IDX_NEXT]] = add i32 [[IDX]], 1
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; CHECK-NEXT: [[ABC:%.*]] = icmp slt i32 [[IDX]], -9
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; CHECK-NEXT: br i1 [[ABC]], label [[IN_BOUNDS]], label [[OUT_OF_BOUNDS:%.*]], !prof !0
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; CHECK: in.bounds:
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; CHECK-NEXT: [[ADDR:%.*]] = getelementptr i32, i32* [[ARR:%.*]], i32 [[IDX]]
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; CHECK-NEXT: store i32 0, i32* [[ADDR]]
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; CHECK-NEXT: [[NEXT:%.*]] = icmp slt i32 [[IDX_NEXT]], [[N]]
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; CHECK-NEXT: br i1 [[NEXT]], label [[LOOP]], label [[EXIT_LOOPEXIT:%.*]]
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; CHECK: out.of.bounds:
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; CHECK-NEXT: ret void
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; CHECK: exit.loopexit:
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; CHECK-NEXT: br label [[EXIT]]
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; CHECK: exit:
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; CHECK-NEXT: ret void
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;
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entry:
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%first.itr.check = icmp sgt i32 %n, 0
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br i1 %first.itr.check, label %loop, label %exit
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loop:
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%idx = phi i32 [ 0, %entry ] , [ %idx.next, %in.bounds ]
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%idx.next = add i32 %idx, 1
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%abc = icmp slt i32 %idx, -9
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br i1 %abc, label %in.bounds, label %out.of.bounds, !prof !0
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in.bounds:
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%addr = getelementptr i32, i32* %arr, i32 %idx
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store i32 0, i32* %addr
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%next = icmp slt i32 %idx.next, %n
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br i1 %next, label %loop, label %exit
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out.of.bounds:
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ret void
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exit:
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ret void
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}
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; Same as test_01, but the latch condition is unsigned.
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define void @test_02(i32 *%arr, i32 %n) {
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; CHECK-LABEL: @test_02(
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; CHECK-NEXT: entry:
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; CHECK-NEXT: [[FIRST_ITR_CHECK:%.*]] = icmp sgt i32 [[N:%.*]], 0
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; CHECK-NEXT: br i1 [[FIRST_ITR_CHECK]], label [[LOOP_PREHEADER:%.*]], label [[EXIT:%.*]]
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; CHECK: loop.preheader:
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; CHECK-NEXT: br label [[LOOP:%.*]]
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; CHECK: loop:
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; CHECK-NEXT: [[IDX:%.*]] = phi i32 [ [[IDX_NEXT:%.*]], [[IN_BOUNDS:%.*]] ], [ 0, [[LOOP_PREHEADER]] ]
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; CHECK-NEXT: [[IDX_NEXT]] = add i32 [[IDX]], 1
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; CHECK-NEXT: [[ABC:%.*]] = icmp slt i32 [[IDX]], -9
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; CHECK-NEXT: br i1 [[ABC]], label [[IN_BOUNDS]], label [[OUT_OF_BOUNDS:%.*]], !prof !0
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; CHECK: in.bounds:
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; CHECK-NEXT: [[ADDR:%.*]] = getelementptr i32, i32* [[ARR:%.*]], i32 [[IDX]]
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; CHECK-NEXT: store i32 0, i32* [[ADDR]]
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; CHECK-NEXT: [[NEXT:%.*]] = icmp ult i32 [[IDX_NEXT]], [[N]]
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; CHECK-NEXT: br i1 [[NEXT]], label [[LOOP]], label [[EXIT_LOOPEXIT:%.*]]
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; CHECK: out.of.bounds:
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; CHECK-NEXT: ret void
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; CHECK: exit.loopexit:
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; CHECK-NEXT: br label [[EXIT]]
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; CHECK: exit:
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; CHECK-NEXT: ret void
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;
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entry:
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%first.itr.check = icmp sgt i32 %n, 0
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br i1 %first.itr.check, label %loop, label %exit
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loop:
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%idx = phi i32 [ 0, %entry ] , [ %idx.next, %in.bounds ]
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%idx.next = add i32 %idx, 1
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%abc = icmp slt i32 %idx, -9
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br i1 %abc, label %in.bounds, label %out.of.bounds, !prof !0
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in.bounds:
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%addr = getelementptr i32, i32* %arr, i32 %idx
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store i32 0, i32* %addr
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%next = icmp ult i32 %idx.next, %n
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br i1 %next, label %loop, label %exit
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out.of.bounds:
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ret void
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exit:
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ret void
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}
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; RC against a value which is not known to be non-negative. Here we should
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; expand runtime checks against bound being positive or negative.
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define void @test_03(i32 *%arr, i32 %n, i32 %bound) {
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; CHECK-LABEL: @test_03(
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; CHECK-NEXT: entry:
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; CHECK-NEXT: [[FIRST_ITR_CHECK:%.*]] = icmp sgt i32 [[N:%.*]], 0
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; CHECK-NEXT: br i1 [[FIRST_ITR_CHECK]], label [[LOOP_PREHEADER:%.*]], label [[EXIT:%.*]]
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; CHECK: loop.preheader:
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; CHECK-NEXT: [[TMP0:%.*]] = add i32 [[BOUND:%.*]], -2147483647
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; CHECK-NEXT: [[TMP1:%.*]] = icmp sgt i32 [[TMP0]], 0
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; CHECK-NEXT: [[SMAX:%.*]] = select i1 [[TMP1]], i32 [[TMP0]], i32 0
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; CHECK-NEXT: [[TMP2:%.*]] = sub i32 [[BOUND]], [[SMAX]]
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; CHECK-NEXT: [[TMP3:%.*]] = icmp slt i32 [[BOUND]], 0
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; CHECK-NEXT: [[SMIN:%.*]] = select i1 [[TMP3]], i32 [[BOUND]], i32 0
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; CHECK-NEXT: [[TMP4:%.*]] = icmp sgt i32 [[SMIN]], -1
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; CHECK-NEXT: [[SMAX1:%.*]] = select i1 [[TMP4]], i32 [[SMIN]], i32 -1
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; CHECK-NEXT: [[TMP5:%.*]] = add nsw i32 [[SMAX1]], 1
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; CHECK-NEXT: [[TMP6:%.*]] = mul i32 [[TMP2]], [[TMP5]]
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; CHECK-NEXT: [[TMP7:%.*]] = icmp slt i32 [[N]], [[TMP6]]
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; CHECK-NEXT: [[SMIN2:%.*]] = select i1 [[TMP7]], i32 [[N]], i32 [[TMP6]]
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; CHECK-NEXT: [[TMP8:%.*]] = icmp sgt i32 [[SMIN2]], 0
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; CHECK-NEXT: [[EXIT_MAINLOOP_AT:%.*]] = select i1 [[TMP8]], i32 [[SMIN2]], i32 0
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; CHECK-NEXT: [[TMP9:%.*]] = icmp slt i32 0, [[EXIT_MAINLOOP_AT]]
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; CHECK-NEXT: br i1 [[TMP9]], label [[LOOP_PREHEADER4:%.*]], label [[MAIN_PSEUDO_EXIT:%.*]]
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; CHECK: loop.preheader4:
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; CHECK-NEXT: br label [[LOOP:%.*]]
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; CHECK: loop:
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; CHECK-NEXT: [[IDX:%.*]] = phi i32 [ [[IDX_NEXT:%.*]], [[IN_BOUNDS:%.*]] ], [ 0, [[LOOP_PREHEADER4]] ]
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; CHECK-NEXT: [[IDX_NEXT]] = add i32 [[IDX]], 1
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; CHECK-NEXT: [[ABC:%.*]] = icmp slt i32 [[IDX]], [[BOUND]]
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; CHECK-NEXT: br i1 true, label [[IN_BOUNDS]], label [[OUT_OF_BOUNDS_LOOPEXIT5:%.*]], !prof !0
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; CHECK: in.bounds:
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; CHECK-NEXT: [[ADDR:%.*]] = getelementptr i32, i32* [[ARR:%.*]], i32 [[IDX]]
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; CHECK-NEXT: store i32 0, i32* [[ADDR]]
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; CHECK-NEXT: [[NEXT:%.*]] = icmp slt i32 [[IDX_NEXT]], [[N]]
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; CHECK-NEXT: [[TMP10:%.*]] = icmp slt i32 [[IDX_NEXT]], [[EXIT_MAINLOOP_AT]]
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; CHECK-NEXT: br i1 [[TMP10]], label [[LOOP]], label [[MAIN_EXIT_SELECTOR:%.*]]
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; CHECK: main.exit.selector:
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; CHECK-NEXT: [[IDX_NEXT_LCSSA:%.*]] = phi i32 [ [[IDX_NEXT]], [[IN_BOUNDS]] ]
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; CHECK-NEXT: [[TMP11:%.*]] = icmp slt i32 [[IDX_NEXT_LCSSA]], [[N]]
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; CHECK-NEXT: br i1 [[TMP11]], label [[MAIN_PSEUDO_EXIT]], label [[EXIT_LOOPEXIT:%.*]]
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; CHECK: main.pseudo.exit:
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; CHECK-NEXT: [[IDX_COPY:%.*]] = phi i32 [ 0, [[LOOP_PREHEADER]] ], [ [[IDX_NEXT_LCSSA]], [[MAIN_EXIT_SELECTOR]] ]
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; CHECK-NEXT: [[INDVAR_END:%.*]] = phi i32 [ 0, [[LOOP_PREHEADER]] ], [ [[IDX_NEXT_LCSSA]], [[MAIN_EXIT_SELECTOR]] ]
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; CHECK-NEXT: br label [[POSTLOOP:%.*]]
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; CHECK: out.of.bounds.loopexit:
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; CHECK-NEXT: br label [[OUT_OF_BOUNDS:%.*]]
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; CHECK: out.of.bounds.loopexit5:
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; CHECK-NEXT: br label [[OUT_OF_BOUNDS]]
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; CHECK: out.of.bounds:
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; CHECK-NEXT: ret void
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; CHECK: exit.loopexit.loopexit:
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; CHECK-NEXT: br label [[EXIT_LOOPEXIT]]
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; CHECK: exit.loopexit:
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; CHECK-NEXT: br label [[EXIT]]
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; CHECK: exit:
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; CHECK-NEXT: ret void
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; CHECK: postloop:
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; CHECK-NEXT: br label [[LOOP_POSTLOOP:%.*]]
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; CHECK: loop.postloop:
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; CHECK-NEXT: [[IDX_POSTLOOP:%.*]] = phi i32 [ [[IDX_NEXT_POSTLOOP:%.*]], [[IN_BOUNDS_POSTLOOP:%.*]] ], [ [[IDX_COPY]], [[POSTLOOP]] ]
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; CHECK-NEXT: [[IDX_NEXT_POSTLOOP]] = add i32 [[IDX_POSTLOOP]], 1
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; CHECK-NEXT: [[ABC_POSTLOOP:%.*]] = icmp slt i32 [[IDX_POSTLOOP]], [[BOUND]]
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; CHECK-NEXT: br i1 [[ABC_POSTLOOP]], label [[IN_BOUNDS_POSTLOOP]], label [[OUT_OF_BOUNDS_LOOPEXIT:%.*]], !prof !0
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; CHECK: in.bounds.postloop:
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; CHECK-NEXT: [[ADDR_POSTLOOP:%.*]] = getelementptr i32, i32* [[ARR]], i32 [[IDX_POSTLOOP]]
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; CHECK-NEXT: store i32 0, i32* [[ADDR_POSTLOOP]]
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; CHECK-NEXT: [[NEXT_POSTLOOP:%.*]] = icmp slt i32 [[IDX_NEXT_POSTLOOP]], [[N]]
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; CHECK-NEXT: br i1 [[NEXT_POSTLOOP]], label [[LOOP_POSTLOOP]], label [[EXIT_LOOPEXIT_LOOPEXIT:%.*]], !llvm.loop !1, !irce.loop.clone !6
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;
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entry:
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%first.itr.check = icmp sgt i32 %n, 0
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br i1 %first.itr.check, label %loop, label %exit
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loop:
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%idx = phi i32 [ 0, %entry ] , [ %idx.next, %in.bounds ]
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%idx.next = add i32 %idx, 1
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%abc = icmp slt i32 %idx, %bound
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br i1 %abc, label %in.bounds, label %out.of.bounds, !prof !0
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in.bounds:
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%addr = getelementptr i32, i32* %arr, i32 %idx
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store i32 0, i32* %addr
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%next = icmp slt i32 %idx.next, %n
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br i1 %next, label %loop, label %exit
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out.of.bounds:
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ret void
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exit:
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ret void
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}
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; RC against a value which is not known to be non-negative. Here we should
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; expand runtime checks against bound being positive or negative.
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define void @test_04(i32 *%arr, i32 %n, i32 %bound) {
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; CHECK-LABEL: @test_04(
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; CHECK-NEXT: entry:
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; CHECK-NEXT: [[FIRST_ITR_CHECK:%.*]] = icmp sgt i32 [[N:%.*]], 0
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; CHECK-NEXT: br i1 [[FIRST_ITR_CHECK]], label [[LOOP_PREHEADER:%.*]], label [[EXIT:%.*]]
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; CHECK: loop.preheader:
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; CHECK-NEXT: [[TMP0:%.*]] = icmp slt i32 [[BOUND:%.*]], 0
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; CHECK-NEXT: [[SMIN:%.*]] = select i1 [[TMP0]], i32 [[BOUND]], i32 0
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; CHECK-NEXT: [[TMP1:%.*]] = sub i32 [[BOUND]], [[SMIN]]
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; CHECK-NEXT: [[TMP2:%.*]] = icmp sgt i32 [[SMIN]], -1
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; CHECK-NEXT: [[SMAX:%.*]] = select i1 [[TMP2]], i32 [[SMIN]], i32 -1
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; CHECK-NEXT: [[TMP3:%.*]] = add nsw i32 [[SMAX]], 1
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; CHECK-NEXT: [[TMP4:%.*]] = mul i32 [[TMP1]], [[TMP3]]
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; CHECK-NEXT: [[TMP5:%.*]] = icmp ult i32 [[N]], [[TMP4]]
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; CHECK-NEXT: [[EXIT_MAINLOOP_AT:%.*]] = select i1 [[TMP5]], i32 [[N]], i32 [[TMP4]]
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; CHECK-NEXT: [[TMP6:%.*]] = icmp ult i32 0, [[EXIT_MAINLOOP_AT]]
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; CHECK-NEXT: br i1 [[TMP6]], label [[LOOP_PREHEADER1:%.*]], label [[MAIN_PSEUDO_EXIT:%.*]]
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; CHECK: loop.preheader1:
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; CHECK-NEXT: br label [[LOOP:%.*]]
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; CHECK: loop:
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; CHECK-NEXT: [[IDX:%.*]] = phi i32 [ [[IDX_NEXT:%.*]], [[IN_BOUNDS:%.*]] ], [ 0, [[LOOP_PREHEADER1]] ]
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; CHECK-NEXT: [[IDX_NEXT]] = add i32 [[IDX]], 1
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; CHECK-NEXT: [[ABC:%.*]] = icmp slt i32 [[IDX]], [[BOUND]]
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; CHECK-NEXT: br i1 true, label [[IN_BOUNDS]], label [[OUT_OF_BOUNDS_LOOPEXIT2:%.*]], !prof !0
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; CHECK: in.bounds:
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; CHECK-NEXT: [[ADDR:%.*]] = getelementptr i32, i32* [[ARR:%.*]], i32 [[IDX]]
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; CHECK-NEXT: store i32 0, i32* [[ADDR]]
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; CHECK-NEXT: [[NEXT:%.*]] = icmp ult i32 [[IDX_NEXT]], [[N]]
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; CHECK-NEXT: [[TMP7:%.*]] = icmp ult i32 [[IDX_NEXT]], [[EXIT_MAINLOOP_AT]]
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; CHECK-NEXT: br i1 [[TMP7]], label [[LOOP]], label [[MAIN_EXIT_SELECTOR:%.*]]
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; CHECK: main.exit.selector:
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; CHECK-NEXT: [[IDX_NEXT_LCSSA:%.*]] = phi i32 [ [[IDX_NEXT]], [[IN_BOUNDS]] ]
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; CHECK-NEXT: [[TMP8:%.*]] = icmp ult i32 [[IDX_NEXT_LCSSA]], [[N]]
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; CHECK-NEXT: br i1 [[TMP8]], label [[MAIN_PSEUDO_EXIT]], label [[EXIT_LOOPEXIT:%.*]]
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; CHECK: main.pseudo.exit:
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; CHECK-NEXT: [[IDX_COPY:%.*]] = phi i32 [ 0, [[LOOP_PREHEADER]] ], [ [[IDX_NEXT_LCSSA]], [[MAIN_EXIT_SELECTOR]] ]
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; CHECK-NEXT: [[INDVAR_END:%.*]] = phi i32 [ 0, [[LOOP_PREHEADER]] ], [ [[IDX_NEXT_LCSSA]], [[MAIN_EXIT_SELECTOR]] ]
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; CHECK-NEXT: br label [[POSTLOOP:%.*]]
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; CHECK: out.of.bounds.loopexit:
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; CHECK-NEXT: br label [[OUT_OF_BOUNDS:%.*]]
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; CHECK: out.of.bounds.loopexit2:
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; CHECK-NEXT: br label [[OUT_OF_BOUNDS]]
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; CHECK: out.of.bounds:
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; CHECK-NEXT: ret void
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; CHECK: exit.loopexit.loopexit:
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; CHECK-NEXT: br label [[EXIT_LOOPEXIT]]
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; CHECK: exit.loopexit:
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; CHECK-NEXT: br label [[EXIT]]
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; CHECK: exit:
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; CHECK-NEXT: ret void
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; CHECK: postloop:
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; CHECK-NEXT: br label [[LOOP_POSTLOOP:%.*]]
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; CHECK: loop.postloop:
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; CHECK-NEXT: [[IDX_POSTLOOP:%.*]] = phi i32 [ [[IDX_NEXT_POSTLOOP:%.*]], [[IN_BOUNDS_POSTLOOP:%.*]] ], [ [[IDX_COPY]], [[POSTLOOP]] ]
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; CHECK-NEXT: [[IDX_NEXT_POSTLOOP]] = add i32 [[IDX_POSTLOOP]], 1
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; CHECK-NEXT: [[ABC_POSTLOOP:%.*]] = icmp slt i32 [[IDX_POSTLOOP]], [[BOUND]]
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; CHECK-NEXT: br i1 [[ABC_POSTLOOP]], label [[IN_BOUNDS_POSTLOOP]], label [[OUT_OF_BOUNDS_LOOPEXIT:%.*]], !prof !0
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; CHECK: in.bounds.postloop:
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|
|
; CHECK-NEXT: [[ADDR_POSTLOOP:%.*]] = getelementptr i32, i32* [[ARR]], i32 [[IDX_POSTLOOP]]
|
||
|
|
; CHECK-NEXT: store i32 0, i32* [[ADDR_POSTLOOP]]
|
||
|
|
; CHECK-NEXT: [[NEXT_POSTLOOP:%.*]] = icmp ult i32 [[IDX_NEXT_POSTLOOP]], [[N]]
|
||
|
|
; CHECK-NEXT: br i1 [[NEXT_POSTLOOP]], label [[LOOP_POSTLOOP]], label [[EXIT_LOOPEXIT_LOOPEXIT:%.*]], !llvm.loop !7, !irce.loop.clone !6
|
||
|
|
;
|
||
|
|
|
||
|
|
entry:
|
||
|
|
%first.itr.check = icmp sgt i32 %n, 0
|
||
|
|
br i1 %first.itr.check, label %loop, label %exit
|
||
|
|
|
||
|
|
loop:
|
||
|
|
%idx = phi i32 [ 0, %entry ] , [ %idx.next, %in.bounds ]
|
||
|
|
%idx.next = add i32 %idx, 1
|
||
|
|
%abc = icmp slt i32 %idx, %bound
|
||
|
|
br i1 %abc, label %in.bounds, label %out.of.bounds, !prof !0
|
||
|
|
|
||
|
|
in.bounds:
|
||
|
|
%addr = getelementptr i32, i32* %arr, i32 %idx
|
||
|
|
store i32 0, i32* %addr
|
||
|
|
%next = icmp ult i32 %idx.next, %n
|
||
|
|
br i1 %next, label %loop, label %exit
|
||
|
|
|
||
|
|
out.of.bounds:
|
||
|
|
ret void
|
||
|
|
|
||
|
|
exit:
|
||
|
|
ret void
|
||
|
|
}
|
||
|
|
|
||
|
|
; Same as test_01, unsigned range check.
|
||
|
|
; FIXME: We could remove the range check here, but it does not happen due to the
|
||
|
|
; limintation we posed to fix the miscompile (see comments in the method
|
||
|
|
; computeSafeIterationSpace).
|
||
|
|
define void @test_05(i32 *%arr, i32 %n) {
|
||
|
|
; CHECK-LABEL: @test_05(
|
||
|
|
; CHECK-NEXT: entry:
|
||
|
|
; CHECK-NEXT: [[FIRST_ITR_CHECK:%.*]] = icmp sgt i32 [[N:%.*]], 0
|
||
|
|
; CHECK-NEXT: br i1 [[FIRST_ITR_CHECK]], label [[LOOP_PREHEADER:%.*]], label [[EXIT:%.*]]
|
||
|
|
; CHECK: loop.preheader:
|
||
|
|
; CHECK-NEXT: br label [[LOOP:%.*]]
|
||
|
|
; CHECK: loop:
|
||
|
|
; CHECK-NEXT: [[IDX:%.*]] = phi i32 [ [[IDX_NEXT:%.*]], [[IN_BOUNDS:%.*]] ], [ 0, [[LOOP_PREHEADER]] ]
|
||
|
|
; CHECK-NEXT: [[IDX_NEXT]] = add i32 [[IDX]], 1
|
||
|
|
; CHECK-NEXT: [[ABC:%.*]] = icmp ult i32 [[IDX]], -9
|
||
|
|
; CHECK-NEXT: br i1 [[ABC]], label [[IN_BOUNDS]], label [[OUT_OF_BOUNDS:%.*]], !prof !0
|
||
|
|
; CHECK: in.bounds:
|
||
|
|
; CHECK-NEXT: [[ADDR:%.*]] = getelementptr i32, i32* [[ARR:%.*]], i32 [[IDX]]
|
||
|
|
; CHECK-NEXT: store i32 0, i32* [[ADDR]]
|
||
|
|
; CHECK-NEXT: [[NEXT:%.*]] = icmp slt i32 [[IDX_NEXT]], [[N]]
|
||
|
|
; CHECK-NEXT: br i1 [[NEXT]], label [[LOOP]], label [[EXIT_LOOPEXIT:%.*]]
|
||
|
|
; CHECK: out.of.bounds:
|
||
|
|
; CHECK-NEXT: ret void
|
||
|
|
; CHECK: exit.loopexit:
|
||
|
|
; CHECK-NEXT: br label [[EXIT]]
|
||
|
|
; CHECK: exit:
|
||
|
|
; CHECK-NEXT: ret void
|
||
|
|
;
|
||
|
|
entry:
|
||
|
|
%first.itr.check = icmp sgt i32 %n, 0
|
||
|
|
br i1 %first.itr.check, label %loop, label %exit
|
||
|
|
|
||
|
|
loop:
|
||
|
|
%idx = phi i32 [ 0, %entry ] , [ %idx.next, %in.bounds ]
|
||
|
|
%idx.next = add i32 %idx, 1
|
||
|
|
%abc = icmp ult i32 %idx, -9
|
||
|
|
br i1 %abc, label %in.bounds, label %out.of.bounds, !prof !0
|
||
|
|
|
||
|
|
in.bounds:
|
||
|
|
%addr = getelementptr i32, i32* %arr, i32 %idx
|
||
|
|
store i32 0, i32* %addr
|
||
|
|
%next = icmp slt i32 %idx.next, %n
|
||
|
|
br i1 %next, label %loop, label %exit
|
||
|
|
|
||
|
|
out.of.bounds:
|
||
|
|
ret void
|
||
|
|
|
||
|
|
exit:
|
||
|
|
ret void
|
||
|
|
}
|
||
|
|
|
||
|
|
; Same as test_02, unsigned range check.
|
||
|
|
; FIXME: We could remove the range check here, but it does not happen due to the
|
||
|
|
; limintation we posed to fix the miscompile (see comments in the method
|
||
|
|
; computeSafeIterationSpace).
|
||
|
|
define void @test_06(i32 *%arr, i32 %n) {
|
||
|
|
; CHECK-LABEL: @test_06(
|
||
|
|
; CHECK-NEXT: entry:
|
||
|
|
; CHECK-NEXT: [[FIRST_ITR_CHECK:%.*]] = icmp sgt i32 [[N:%.*]], 0
|
||
|
|
; CHECK-NEXT: br i1 [[FIRST_ITR_CHECK]], label [[LOOP_PREHEADER:%.*]], label [[EXIT:%.*]]
|
||
|
|
; CHECK: loop.preheader:
|
||
|
|
; CHECK-NEXT: br label [[LOOP:%.*]]
|
||
|
|
; CHECK: loop:
|
||
|
|
; CHECK-NEXT: [[IDX:%.*]] = phi i32 [ [[IDX_NEXT:%.*]], [[IN_BOUNDS:%.*]] ], [ 0, [[LOOP_PREHEADER]] ]
|
||
|
|
; CHECK-NEXT: [[IDX_NEXT]] = add i32 [[IDX]], 1
|
||
|
|
; CHECK-NEXT: [[ABC:%.*]] = icmp ult i32 [[IDX]], -9
|
||
|
|
; CHECK-NEXT: br i1 [[ABC]], label [[IN_BOUNDS]], label [[OUT_OF_BOUNDS:%.*]], !prof !0
|
||
|
|
; CHECK: in.bounds:
|
||
|
|
; CHECK-NEXT: [[ADDR:%.*]] = getelementptr i32, i32* [[ARR:%.*]], i32 [[IDX]]
|
||
|
|
; CHECK-NEXT: store i32 0, i32* [[ADDR]]
|
||
|
|
; CHECK-NEXT: [[NEXT:%.*]] = icmp ult i32 [[IDX_NEXT]], [[N]]
|
||
|
|
; CHECK-NEXT: br i1 [[NEXT]], label [[LOOP]], label [[EXIT_LOOPEXIT:%.*]]
|
||
|
|
; CHECK: out.of.bounds:
|
||
|
|
; CHECK-NEXT: ret void
|
||
|
|
; CHECK: exit.loopexit:
|
||
|
|
; CHECK-NEXT: br label [[EXIT]]
|
||
|
|
; CHECK: exit:
|
||
|
|
; CHECK-NEXT: ret void
|
||
|
|
;
|
||
|
|
entry:
|
||
|
|
%first.itr.check = icmp sgt i32 %n, 0
|
||
|
|
br i1 %first.itr.check, label %loop, label %exit
|
||
|
|
|
||
|
|
loop:
|
||
|
|
%idx = phi i32 [ 0, %entry ] , [ %idx.next, %in.bounds ]
|
||
|
|
%idx.next = add i32 %idx, 1
|
||
|
|
%abc = icmp ult i32 %idx, -9
|
||
|
|
br i1 %abc, label %in.bounds, label %out.of.bounds, !prof !0
|
||
|
|
|
||
|
|
in.bounds:
|
||
|
|
%addr = getelementptr i32, i32* %arr, i32 %idx
|
||
|
|
store i32 0, i32* %addr
|
||
|
|
%next = icmp ult i32 %idx.next, %n
|
||
|
|
br i1 %next, label %loop, label %exit
|
||
|
|
|
||
|
|
out.of.bounds:
|
||
|
|
ret void
|
||
|
|
|
||
|
|
exit:
|
||
|
|
ret void
|
||
|
|
}
|
||
|
|
|
||
|
|
; Same as test_03, unsigned range check.
|
||
|
|
; FIXME: Currently we remove the check, but we will not execute the main loop if
|
||
|
|
; %bound is negative (i.e. in [SINT_MAX + 1, UINT_MAX)). We should be able to
|
||
|
|
; safely remove this check (see comments in the method
|
||
|
|
; computeSafeIterationSpace).
|
||
|
|
define void @test_07(i32 *%arr, i32 %n, i32 %bound) {
|
||
|
|
; CHECK-LABEL: @test_07(
|
||
|
|
; CHECK-NEXT: entry:
|
||
|
|
; CHECK-NEXT: [[FIRST_ITR_CHECK:%.*]] = icmp sgt i32 [[N:%.*]], 0
|
||
|
|
; CHECK-NEXT: br i1 [[FIRST_ITR_CHECK]], label [[LOOP_PREHEADER:%.*]], label [[EXIT:%.*]]
|
||
|
|
; CHECK: loop.preheader:
|
||
|
|
; CHECK-NEXT: [[TMP0:%.*]] = add i32 [[BOUND:%.*]], -2147483647
|
||
|
|
; CHECK-NEXT: [[TMP1:%.*]] = icmp sgt i32 [[TMP0]], 0
|
||
|
|
; CHECK-NEXT: [[SMAX:%.*]] = select i1 [[TMP1]], i32 [[TMP0]], i32 0
|
||
|
|
; CHECK-NEXT: [[TMP2:%.*]] = sub i32 [[BOUND]], [[SMAX]]
|
||
|
|
; CHECK-NEXT: [[TMP3:%.*]] = icmp slt i32 [[BOUND]], 0
|
||
|
|
; CHECK-NEXT: [[SMIN:%.*]] = select i1 [[TMP3]], i32 [[BOUND]], i32 0
|
||
|
|
; CHECK-NEXT: [[TMP4:%.*]] = icmp sgt i32 [[SMIN]], -1
|
||
|
|
; CHECK-NEXT: [[SMAX1:%.*]] = select i1 [[TMP4]], i32 [[SMIN]], i32 -1
|
||
|
|
; CHECK-NEXT: [[TMP5:%.*]] = add nsw i32 [[SMAX1]], 1
|
||
|
|
; CHECK-NEXT: [[TMP6:%.*]] = mul i32 [[TMP2]], [[TMP5]]
|
||
|
|
; CHECK-NEXT: [[TMP7:%.*]] = icmp slt i32 [[N]], [[TMP6]]
|
||
|
|
; CHECK-NEXT: [[SMIN2:%.*]] = select i1 [[TMP7]], i32 [[N]], i32 [[TMP6]]
|
||
|
|
; CHECK-NEXT: [[TMP8:%.*]] = icmp sgt i32 [[SMIN2]], 0
|
||
|
|
; CHECK-NEXT: [[EXIT_MAINLOOP_AT:%.*]] = select i1 [[TMP8]], i32 [[SMIN2]], i32 0
|
||
|
|
; CHECK-NEXT: [[TMP9:%.*]] = icmp slt i32 0, [[EXIT_MAINLOOP_AT]]
|
||
|
|
; CHECK-NEXT: br i1 [[TMP9]], label [[LOOP_PREHEADER4:%.*]], label [[MAIN_PSEUDO_EXIT:%.*]]
|
||
|
|
; CHECK: loop.preheader4:
|
||
|
|
; CHECK-NEXT: br label [[LOOP:%.*]]
|
||
|
|
; CHECK: loop:
|
||
|
|
; CHECK-NEXT: [[IDX:%.*]] = phi i32 [ [[IDX_NEXT:%.*]], [[IN_BOUNDS:%.*]] ], [ 0, [[LOOP_PREHEADER4]] ]
|
||
|
|
; CHECK-NEXT: [[IDX_NEXT]] = add i32 [[IDX]], 1
|
||
|
|
; CHECK-NEXT: [[ABC:%.*]] = icmp ult i32 [[IDX]], [[BOUND]]
|
||
|
|
; CHECK-NEXT: br i1 true, label [[IN_BOUNDS]], label [[OUT_OF_BOUNDS_LOOPEXIT5:%.*]], !prof !0
|
||
|
|
; CHECK: in.bounds:
|
||
|
|
; CHECK-NEXT: [[ADDR:%.*]] = getelementptr i32, i32* [[ARR:%.*]], i32 [[IDX]]
|
||
|
|
; CHECK-NEXT: store i32 0, i32* [[ADDR]]
|
||
|
|
; CHECK-NEXT: [[NEXT:%.*]] = icmp slt i32 [[IDX_NEXT]], [[N]]
|
||
|
|
; CHECK-NEXT: [[TMP10:%.*]] = icmp slt i32 [[IDX_NEXT]], [[EXIT_MAINLOOP_AT]]
|
||
|
|
; CHECK-NEXT: br i1 [[TMP10]], label [[LOOP]], label [[MAIN_EXIT_SELECTOR:%.*]]
|
||
|
|
; CHECK: main.exit.selector:
|
||
|
|
; CHECK-NEXT: [[IDX_NEXT_LCSSA:%.*]] = phi i32 [ [[IDX_NEXT]], [[IN_BOUNDS]] ]
|
||
|
|
; CHECK-NEXT: [[TMP11:%.*]] = icmp slt i32 [[IDX_NEXT_LCSSA]], [[N]]
|
||
|
|
; CHECK-NEXT: br i1 [[TMP11]], label [[MAIN_PSEUDO_EXIT]], label [[EXIT_LOOPEXIT:%.*]]
|
||
|
|
; CHECK: main.pseudo.exit:
|
||
|
|
; CHECK-NEXT: [[IDX_COPY:%.*]] = phi i32 [ 0, [[LOOP_PREHEADER]] ], [ [[IDX_NEXT_LCSSA]], [[MAIN_EXIT_SELECTOR]] ]
|
||
|
|
; CHECK-NEXT: [[INDVAR_END:%.*]] = phi i32 [ 0, [[LOOP_PREHEADER]] ], [ [[IDX_NEXT_LCSSA]], [[MAIN_EXIT_SELECTOR]] ]
|
||
|
|
; CHECK-NEXT: br label [[POSTLOOP:%.*]]
|
||
|
|
; CHECK: out.of.bounds.loopexit:
|
||
|
|
; CHECK-NEXT: br label [[OUT_OF_BOUNDS:%.*]]
|
||
|
|
; CHECK: out.of.bounds.loopexit5:
|
||
|
|
; CHECK-NEXT: br label [[OUT_OF_BOUNDS]]
|
||
|
|
; CHECK: out.of.bounds:
|
||
|
|
; CHECK-NEXT: ret void
|
||
|
|
; CHECK: exit.loopexit.loopexit:
|
||
|
|
; CHECK-NEXT: br label [[EXIT_LOOPEXIT]]
|
||
|
|
; CHECK: exit.loopexit:
|
||
|
|
; CHECK-NEXT: br label [[EXIT]]
|
||
|
|
; CHECK: exit:
|
||
|
|
; CHECK-NEXT: ret void
|
||
|
|
; CHECK: postloop:
|
||
|
|
; CHECK-NEXT: br label [[LOOP_POSTLOOP:%.*]]
|
||
|
|
; CHECK: loop.postloop:
|
||
|
|
; CHECK-NEXT: [[IDX_POSTLOOP:%.*]] = phi i32 [ [[IDX_NEXT_POSTLOOP:%.*]], [[IN_BOUNDS_POSTLOOP:%.*]] ], [ [[IDX_COPY]], [[POSTLOOP]] ]
|
||
|
|
; CHECK-NEXT: [[IDX_NEXT_POSTLOOP]] = add i32 [[IDX_POSTLOOP]], 1
|
||
|
|
; CHECK-NEXT: [[ABC_POSTLOOP:%.*]] = icmp ult i32 [[IDX_POSTLOOP]], [[BOUND]]
|
||
|
|
; CHECK-NEXT: br i1 [[ABC_POSTLOOP]], label [[IN_BOUNDS_POSTLOOP]], label [[OUT_OF_BOUNDS_LOOPEXIT:%.*]], !prof !0
|
||
|
|
; CHECK: in.bounds.postloop:
|
||
|
|
; CHECK-NEXT: [[ADDR_POSTLOOP:%.*]] = getelementptr i32, i32* [[ARR]], i32 [[IDX_POSTLOOP]]
|
||
|
|
; CHECK-NEXT: store i32 0, i32* [[ADDR_POSTLOOP]]
|
||
|
|
; CHECK-NEXT: [[NEXT_POSTLOOP:%.*]] = icmp slt i32 [[IDX_NEXT_POSTLOOP]], [[N]]
|
||
|
|
; CHECK-NEXT: br i1 [[NEXT_POSTLOOP]], label [[LOOP_POSTLOOP]], label [[EXIT_LOOPEXIT_LOOPEXIT:%.*]], !llvm.loop !8, !irce.loop.clone !6
|
||
|
|
;
|
||
|
|
entry:
|
||
|
|
%first.itr.check = icmp sgt i32 %n, 0
|
||
|
|
br i1 %first.itr.check, label %loop, label %exit
|
||
|
|
|
||
|
|
loop:
|
||
|
|
%idx = phi i32 [ 0, %entry ] , [ %idx.next, %in.bounds ]
|
||
|
|
%idx.next = add i32 %idx, 1
|
||
|
|
%abc = icmp ult i32 %idx, %bound
|
||
|
|
br i1 %abc, label %in.bounds, label %out.of.bounds, !prof !0
|
||
|
|
|
||
|
|
in.bounds:
|
||
|
|
%addr = getelementptr i32, i32* %arr, i32 %idx
|
||
|
|
store i32 0, i32* %addr
|
||
|
|
%next = icmp slt i32 %idx.next, %n
|
||
|
|
br i1 %next, label %loop, label %exit
|
||
|
|
|
||
|
|
out.of.bounds:
|
||
|
|
ret void
|
||
|
|
|
||
|
|
exit:
|
||
|
|
ret void
|
||
|
|
}
|
||
|
|
|
||
|
|
; Same as test_04, unsigned range check.
|
||
|
|
; FIXME: Currently we remove the check, but we will not execute the main loop if
|
||
|
|
; %bound is negative (i.e. in [SINT_MAX + 1, UINT_MAX)). We should be able to
|
||
|
|
; safely remove this check (see comments in the method
|
||
|
|
; computeSafeIterationSpace).
|
||
|
|
define void @test_08(i32 *%arr, i32 %n, i32 %bound) {
|
||
|
|
; CHECK-LABEL: @test_08(
|
||
|
|
; CHECK-NEXT: entry:
|
||
|
|
; CHECK-NEXT: [[FIRST_ITR_CHECK:%.*]] = icmp sgt i32 [[N:%.*]], 0
|
||
|
|
; CHECK-NEXT: br i1 [[FIRST_ITR_CHECK]], label [[LOOP_PREHEADER:%.*]], label [[EXIT:%.*]]
|
||
|
|
; CHECK: loop.preheader:
|
||
|
|
; CHECK-NEXT: [[TMP0:%.*]] = icmp slt i32 [[BOUND:%.*]], 0
|
||
|
|
; CHECK-NEXT: [[SMIN:%.*]] = select i1 [[TMP0]], i32 [[BOUND]], i32 0
|
||
|
|
; CHECK-NEXT: [[TMP1:%.*]] = sub i32 [[BOUND]], [[SMIN]]
|
||
|
|
; CHECK-NEXT: [[TMP2:%.*]] = icmp sgt i32 [[SMIN]], -1
|
||
|
|
; CHECK-NEXT: [[SMAX:%.*]] = select i1 [[TMP2]], i32 [[SMIN]], i32 -1
|
||
|
|
; CHECK-NEXT: [[TMP3:%.*]] = add nsw i32 [[SMAX]], 1
|
||
|
|
; CHECK-NEXT: [[TMP4:%.*]] = mul i32 [[TMP1]], [[TMP3]]
|
||
|
|
; CHECK-NEXT: [[TMP5:%.*]] = icmp ult i32 [[N]], [[TMP4]]
|
||
|
|
; CHECK-NEXT: [[EXIT_MAINLOOP_AT:%.*]] = select i1 [[TMP5]], i32 [[N]], i32 [[TMP4]]
|
||
|
|
; CHECK-NEXT: [[TMP6:%.*]] = icmp ult i32 0, [[EXIT_MAINLOOP_AT]]
|
||
|
|
; CHECK-NEXT: br i1 [[TMP6]], label [[LOOP_PREHEADER1:%.*]], label [[MAIN_PSEUDO_EXIT:%.*]]
|
||
|
|
; CHECK: loop.preheader1:
|
||
|
|
; CHECK-NEXT: br label [[LOOP:%.*]]
|
||
|
|
; CHECK: loop:
|
||
|
|
; CHECK-NEXT: [[IDX:%.*]] = phi i32 [ [[IDX_NEXT:%.*]], [[IN_BOUNDS:%.*]] ], [ 0, [[LOOP_PREHEADER1]] ]
|
||
|
|
; CHECK-NEXT: [[IDX_NEXT]] = add i32 [[IDX]], 1
|
||
|
|
; CHECK-NEXT: [[ABC:%.*]] = icmp ult i32 [[IDX]], [[BOUND]]
|
||
|
|
; CHECK-NEXT: br i1 true, label [[IN_BOUNDS]], label [[OUT_OF_BOUNDS_LOOPEXIT2:%.*]], !prof !0
|
||
|
|
; CHECK: in.bounds:
|
||
|
|
; CHECK-NEXT: [[ADDR:%.*]] = getelementptr i32, i32* [[ARR:%.*]], i32 [[IDX]]
|
||
|
|
; CHECK-NEXT: store i32 0, i32* [[ADDR]]
|
||
|
|
; CHECK-NEXT: [[NEXT:%.*]] = icmp ult i32 [[IDX_NEXT]], [[N]]
|
||
|
|
; CHECK-NEXT: [[TMP7:%.*]] = icmp ult i32 [[IDX_NEXT]], [[EXIT_MAINLOOP_AT]]
|
||
|
|
; CHECK-NEXT: br i1 [[TMP7]], label [[LOOP]], label [[MAIN_EXIT_SELECTOR:%.*]]
|
||
|
|
; CHECK: main.exit.selector:
|
||
|
|
; CHECK-NEXT: [[IDX_NEXT_LCSSA:%.*]] = phi i32 [ [[IDX_NEXT]], [[IN_BOUNDS]] ]
|
||
|
|
; CHECK-NEXT: [[TMP8:%.*]] = icmp ult i32 [[IDX_NEXT_LCSSA]], [[N]]
|
||
|
|
; CHECK-NEXT: br i1 [[TMP8]], label [[MAIN_PSEUDO_EXIT]], label [[EXIT_LOOPEXIT:%.*]]
|
||
|
|
; CHECK: main.pseudo.exit:
|
||
|
|
; CHECK-NEXT: [[IDX_COPY:%.*]] = phi i32 [ 0, [[LOOP_PREHEADER]] ], [ [[IDX_NEXT_LCSSA]], [[MAIN_EXIT_SELECTOR]] ]
|
||
|
|
; CHECK-NEXT: [[INDVAR_END:%.*]] = phi i32 [ 0, [[LOOP_PREHEADER]] ], [ [[IDX_NEXT_LCSSA]], [[MAIN_EXIT_SELECTOR]] ]
|
||
|
|
; CHECK-NEXT: br label [[POSTLOOP:%.*]]
|
||
|
|
; CHECK: out.of.bounds.loopexit:
|
||
|
|
; CHECK-NEXT: br label [[OUT_OF_BOUNDS:%.*]]
|
||
|
|
; CHECK: out.of.bounds.loopexit2:
|
||
|
|
; CHECK-NEXT: br label [[OUT_OF_BOUNDS]]
|
||
|
|
; CHECK: out.of.bounds:
|
||
|
|
; CHECK-NEXT: ret void
|
||
|
|
; CHECK: exit.loopexit.loopexit:
|
||
|
|
; CHECK-NEXT: br label [[EXIT_LOOPEXIT]]
|
||
|
|
; CHECK: exit.loopexit:
|
||
|
|
; CHECK-NEXT: br label [[EXIT]]
|
||
|
|
; CHECK: exit:
|
||
|
|
; CHECK-NEXT: ret void
|
||
|
|
; CHECK: postloop:
|
||
|
|
; CHECK-NEXT: br label [[LOOP_POSTLOOP:%.*]]
|
||
|
|
; CHECK: loop.postloop:
|
||
|
|
; CHECK-NEXT: [[IDX_POSTLOOP:%.*]] = phi i32 [ [[IDX_NEXT_POSTLOOP:%.*]], [[IN_BOUNDS_POSTLOOP:%.*]] ], [ [[IDX_COPY]], [[POSTLOOP]] ]
|
||
|
|
; CHECK-NEXT: [[IDX_NEXT_POSTLOOP]] = add i32 [[IDX_POSTLOOP]], 1
|
||
|
|
; CHECK-NEXT: [[ABC_POSTLOOP:%.*]] = icmp ult i32 [[IDX_POSTLOOP]], [[BOUND]]
|
||
|
|
; CHECK-NEXT: br i1 [[ABC_POSTLOOP]], label [[IN_BOUNDS_POSTLOOP]], label [[OUT_OF_BOUNDS_LOOPEXIT:%.*]], !prof !0
|
||
|
|
; CHECK: in.bounds.postloop:
|
||
|
|
; CHECK-NEXT: [[ADDR_POSTLOOP:%.*]] = getelementptr i32, i32* [[ARR]], i32 [[IDX_POSTLOOP]]
|
||
|
|
; CHECK-NEXT: store i32 0, i32* [[ADDR_POSTLOOP]]
|
||
|
|
; CHECK-NEXT: [[NEXT_POSTLOOP:%.*]] = icmp ult i32 [[IDX_NEXT_POSTLOOP]], [[N]]
|
||
|
|
; CHECK-NEXT: br i1 [[NEXT_POSTLOOP]], label [[LOOP_POSTLOOP]], label [[EXIT_LOOPEXIT_LOOPEXIT:%.*]], !llvm.loop !9, !irce.loop.clone !6
|
||
|
|
;
|
||
|
|
entry:
|
||
|
|
%first.itr.check = icmp sgt i32 %n, 0
|
||
|
|
br i1 %first.itr.check, label %loop, label %exit
|
||
|
|
|
||
|
|
loop:
|
||
|
|
%idx = phi i32 [ 0, %entry ] , [ %idx.next, %in.bounds ]
|
||
|
|
%idx.next = add i32 %idx, 1
|
||
|
|
%abc = icmp ult i32 %idx, %bound
|
||
|
|
br i1 %abc, label %in.bounds, label %out.of.bounds, !prof !0
|
||
|
|
|
||
|
|
in.bounds:
|
||
|
|
%addr = getelementptr i32, i32* %arr, i32 %idx
|
||
|
|
store i32 0, i32* %addr
|
||
|
|
%next = icmp ult i32 %idx.next, %n
|
||
|
|
br i1 %next, label %loop, label %exit
|
||
|
|
|
||
|
|
out.of.bounds:
|
||
|
|
ret void
|
||
|
|
|
||
|
|
exit:
|
||
|
|
ret void
|
||
|
|
}
|
||
|
|
!0 = !{!"branch_weights", i32 64, i32 4}
|