392 lines
14 KiB
LLVM
392 lines
14 KiB
LLVM
|
; RUN: opt -verify-loop-info -irce-print-changed-loops -irce -S < %s 2>&1 | FileCheck %s
|
||
|
|
; RUN: opt -verify-loop-info -irce-print-changed-loops -passes='require<branch-prob>,irce' -S < %s 2>&1 | FileCheck %s
|
||
|
|
|
||
|
|
; CHECK: irce: in function test_01: constrained Loop at depth 1 containing: %loop<header><exiting>,%in.bounds<latch><exiting>
|
||
|
|
; CHECK: irce: in function test_02: constrained Loop at depth 1 containing: %loop<header><exiting>,%in.bounds<latch><exiting>
|
||
|
|
; CHECK: irce: in function test_03: constrained Loop at depth 1 containing: %loop<header><exiting>,%in.bounds<latch><exiting>
|
||
|
|
; CHECK: irce: in function test_04: constrained Loop at depth 1 containing: %loop<header><exiting>,%in.bounds<latch><exiting>
|
||
|
|
; CHECK: irce: in function test_05: constrained Loop at depth 1 containing: %loop<header><exiting>,%in.bounds<latch><exiting>
|
||
|
|
; CHECK: irce: in function test_06: constrained Loop at depth 1 containing: %loop<header><exiting>,%in.bounds<latch><exiting>
|
||
|
|
; CHECK-NOT: irce: in function test_07: constrained Loop at depth 1 containing: %loop<header><exiting>,%in.bounds<latch><exiting>
|
||
|
|
; CHECK: irce: in function test_08: constrained Loop at depth 1 containing: %loop<header><exiting>,%in.bounds<latch><exiting>
|
||
|
|
; CHECK-NOT: irce: in function test_09: constrained Loop at depth 1 containing: %loop<header><exiting>,%in.bounds<latch><exiting>
|
||
|
|
|
||
|
|
; ULT condition for increasing loop.
|
||
|
|
define void @test_01(i32* %arr, i32* %a_len_ptr) #0 {
|
||
|
|
|
||
|
|
; CHECK: test_01
|
||
|
|
; CHECK: entry:
|
||
|
|
; CHECK-NEXT: %exit.mainloop.at = load i32, i32* %a_len_ptr, align 4, !range !0
|
||
|
|
; CHECK-NEXT: [[COND:%[^ ]+]] = icmp ult i32 0, %exit.mainloop.at
|
||
|
|
; CHECK-NEXT: br i1 [[COND]], label %loop.preheader, label %main.pseudo.exit
|
||
|
|
; CHECK: loop:
|
||
|
|
; CHECK-NEXT: %idx = phi i32 [ %idx.next, %in.bounds ], [ 0, %loop.preheader ]
|
||
|
|
; CHECK-NEXT: %idx.next = add nuw nsw i32 %idx, 1
|
||
|
|
; CHECK-NEXT: %abc = icmp ult i32 %idx, %exit.mainloop.at
|
||
|
|
; CHECK-NEXT: br i1 true, label %in.bounds, label %out.of.bounds.loopexit1
|
||
|
|
; CHECK-NOT: loop.preloop:
|
||
|
|
; CHECK: loop.postloop:
|
||
|
|
; CHECK-NEXT: %idx.postloop = phi i32 [ %idx.copy, %postloop ], [ %idx.next.postloop, %in.bounds.postloop ]
|
||
|
|
; CHECK-NEXT: %idx.next.postloop = add nuw nsw i32 %idx.postloop, 1
|
||
|
|
; CHECK-NEXT: %abc.postloop = icmp ult i32 %idx.postloop, %exit.mainloop.at
|
||
|
|
; CHECK-NEXT: br i1 %abc.postloop, label %in.bounds.postloop, label %out.of.bounds.loopexit
|
||
|
|
|
||
|
|
entry:
|
||
|
|
%len = load i32, i32* %a_len_ptr, !range !0
|
||
|
|
br label %loop
|
||
|
|
|
||
|
|
loop:
|
||
|
|
%idx = phi i32 [ 0, %entry ], [ %idx.next, %in.bounds ]
|
||
|
|
%idx.next = add nsw nuw i32 %idx, 1
|
||
|
|
%abc = icmp ult i32 %idx, %len
|
||
|
|
br i1 %abc, label %in.bounds, label %out.of.bounds
|
||
|
|
|
||
|
|
in.bounds:
|
||
|
|
%addr = getelementptr i32, i32* %arr, i32 %idx
|
||
|
|
store i32 0, i32* %addr
|
||
|
|
%next = icmp ult i32 %idx.next, 100
|
||
|
|
br i1 %next, label %loop, label %exit
|
||
|
|
|
||
|
|
out.of.bounds:
|
||
|
|
ret void
|
||
|
|
|
||
|
|
exit:
|
||
|
|
ret void
|
||
|
|
}
|
||
|
|
|
||
|
|
; ULT condition for decreasing loops.
|
||
|
|
define void @test_02(i32* %arr, i32* %a_len_ptr) #0 {
|
||
|
|
|
||
|
|
; CHECK: test_02(
|
||
|
|
; CHECK: entry:
|
||
|
|
; CHECK-NEXT: %len = load i32, i32* %a_len_ptr, align 4, !range !0
|
||
|
|
; CHECK-NEXT: [[COND1:%[^ ]+]] = icmp ugt i32 %len, 1
|
||
|
|
; CHECK-NEXT: [[UMIN:%[^ ]+]] = select i1 [[COND1]], i32 %len, i32 1
|
||
|
|
; CHECK-NEXT: %exit.preloop.at = add nsw i32 [[UMIN]], -1
|
||
|
|
; CHECK-NEXT: [[COND2:%[^ ]+]] = icmp ugt i32 100, %exit.preloop.at
|
||
|
|
; CHECK-NEXT: br i1 [[COND2]], label %loop.preloop.preheader, label %preloop.pseudo.exit
|
||
|
|
; CHECK: mainloop:
|
||
|
|
; CHECK-NEXT: br label %loop
|
||
|
|
; CHECK: loop:
|
||
|
|
; CHECK-NEXT: %idx = phi i32 [ %idx.preloop.copy, %mainloop ], [ %idx.next, %in.bounds ]
|
||
|
|
; CHECK-NEXT: %idx.next = add i32 %idx, -1
|
||
|
|
; CHECK-NEXT: %abc = icmp ult i32 %idx, %len
|
||
|
|
; CHECK-NEXT: br i1 true, label %in.bounds, label %out.of.bounds.loopexit1
|
||
|
|
; CHECK-NOT: loop.postloop:
|
||
|
|
; CHECK: loop.preloop:
|
||
|
|
; CHECK-NEXT: %idx.preloop = phi i32 [ %idx.next.preloop, %in.bounds.preloop ], [ 100, %loop.preloop.preheader ]
|
||
|
|
; CHECK-NEXT: %idx.next.preloop = add i32 %idx.preloop, -1
|
||
|
|
; CHECK-NEXT: %abc.preloop = icmp ult i32 %idx.preloop, %len
|
||
|
|
; CHECK-NEXT: br i1 %abc.preloop, label %in.bounds.preloop, label %out.of.bounds.loopexit
|
||
|
|
|
||
|
|
entry:
|
||
|
|
%len = load i32, i32* %a_len_ptr, !range !0
|
||
|
|
br label %loop
|
||
|
|
|
||
|
|
loop:
|
||
|
|
%idx = phi i32 [ 100, %entry ], [ %idx.next, %in.bounds ]
|
||
|
|
%idx.next = add i32 %idx, -1
|
||
|
|
%abc = icmp ult i32 %idx, %len
|
||
|
|
br i1 %abc, label %in.bounds, label %out.of.bounds
|
||
|
|
|
||
|
|
in.bounds:
|
||
|
|
%addr = getelementptr i32, i32* %arr, i32 %idx
|
||
|
|
store i32 0, i32* %addr
|
||
|
|
%next = icmp ult i32 %idx.next, 1
|
||
|
|
br i1 %next, label %exit, label %loop
|
||
|
|
|
||
|
|
out.of.bounds:
|
||
|
|
ret void
|
||
|
|
|
||
|
|
exit:
|
||
|
|
ret void
|
||
|
|
}
|
||
|
|
|
||
|
|
; Check SINT_MAX.
|
||
|
|
define void @test_03(i32* %arr, i32* %a_len_ptr) #0 {
|
||
|
|
|
||
|
|
; CHECK: test_03
|
||
|
|
; CHECK: entry:
|
||
|
|
; CHECK-NEXT: %exit.mainloop.at = load i32, i32* %a_len_ptr, align 4, !range !0
|
||
|
|
; CHECK-NEXT: [[COND:%[^ ]+]] = icmp ult i32 0, %exit.mainloop.at
|
||
|
|
; CHECK-NEXT: br i1 [[COND]], label %loop.preheader, label %main.pseudo.exit
|
||
|
|
; CHECK: loop:
|
||
|
|
; CHECK-NEXT: %idx = phi i32 [ %idx.next, %in.bounds ], [ 0, %loop.preheader ]
|
||
|
|
; CHECK-NEXT: %idx.next = add nuw nsw i32 %idx, 1
|
||
|
|
; CHECK-NEXT: %abc = icmp ult i32 %idx, %exit.mainloop.at
|
||
|
|
; CHECK-NEXT: br i1 true, label %in.bounds, label %out.of.bounds.loopexit1
|
||
|
|
; CHECK-NOT: loop.preloop:
|
||
|
|
; CHECK: loop.postloop:
|
||
|
|
; CHECK-NEXT: %idx.postloop = phi i32 [ %idx.copy, %postloop ], [ %idx.next.postloop, %in.bounds.postloop ]
|
||
|
|
; CHECK-NEXT: %idx.next.postloop = add nuw nsw i32 %idx.postloop, 1
|
||
|
|
; CHECK-NEXT: %abc.postloop = icmp ult i32 %idx.postloop, %exit.mainloop.at
|
||
|
|
; CHECK-NEXT: br i1 %abc.postloop, label %in.bounds.postloop, label %out.of.bounds.loopexit
|
||
|
|
|
||
|
|
entry:
|
||
|
|
%len = load i32, i32* %a_len_ptr, !range !0
|
||
|
|
br label %loop
|
||
|
|
|
||
|
|
loop:
|
||
|
|
%idx = phi i32 [ 0, %entry ], [ %idx.next, %in.bounds ]
|
||
|
|
%idx.next = add nsw nuw i32 %idx, 1
|
||
|
|
%abc = icmp ult i32 %idx, %len
|
||
|
|
br i1 %abc, label %in.bounds, label %out.of.bounds
|
||
|
|
|
||
|
|
in.bounds:
|
||
|
|
%addr = getelementptr i32, i32* %arr, i32 %idx
|
||
|
|
store i32 0, i32* %addr
|
||
|
|
%next = icmp ult i32 %idx.next, 2147483647
|
||
|
|
br i1 %next, label %loop, label %exit
|
||
|
|
|
||
|
|
out.of.bounds:
|
||
|
|
ret void
|
||
|
|
|
||
|
|
exit:
|
||
|
|
ret void
|
||
|
|
}
|
||
|
|
|
||
|
|
; Check SINT_MAX + 1, test is similar to test_01.
|
||
|
|
define void @test_04(i32* %arr, i32* %a_len_ptr) #0 {
|
||
|
|
|
||
|
|
; CHECK: test_04
|
||
|
|
; CHECK: entry:
|
||
|
|
; CHECK-NEXT: %exit.mainloop.at = load i32, i32* %a_len_ptr, align 4, !range !0
|
||
|
|
; CHECK-NEXT: [[COND:%[^ ]+]] = icmp ult i32 0, %exit.mainloop.at
|
||
|
|
; CHECK-NEXT: br i1 [[COND]], label %loop.preheader, label %main.pseudo.exit
|
||
|
|
; CHECK: loop:
|
||
|
|
; CHECK-NEXT: %idx = phi i32 [ %idx.next, %in.bounds ], [ 0, %loop.preheader ]
|
||
|
|
; CHECK-NEXT: %idx.next = add nuw nsw i32 %idx, 1
|
||
|
|
; CHECK-NEXT: %abc = icmp ult i32 %idx, %exit.mainloop.at
|
||
|
|
; CHECK-NEXT: br i1 true, label %in.bounds, label %out.of.bounds.loopexit1
|
||
|
|
; CHECK-NOT: loop.preloop:
|
||
|
|
; CHECK: loop.postloop:
|
||
|
|
; CHECK-NEXT: %idx.postloop = phi i32 [ %idx.copy, %postloop ], [ %idx.next.postloop, %in.bounds.postloop ]
|
||
|
|
; CHECK-NEXT: %idx.next.postloop = add nuw nsw i32 %idx.postloop, 1
|
||
|
|
; CHECK-NEXT: %abc.postloop = icmp ult i32 %idx.postloop, %exit.mainloop.at
|
||
|
|
; CHECK-NEXT: br i1 %abc.postloop, label %in.bounds.postloop, label %out.of.bounds.loopexit
|
||
|
|
|
||
|
|
entry:
|
||
|
|
%len = load i32, i32* %a_len_ptr, !range !0
|
||
|
|
br label %loop
|
||
|
|
|
||
|
|
loop:
|
||
|
|
%idx = phi i32 [ 0, %entry ], [ %idx.next, %in.bounds ]
|
||
|
|
%idx.next = add nsw nuw i32 %idx, 1
|
||
|
|
%abc = icmp ult i32 %idx, %len
|
||
|
|
br i1 %abc, label %in.bounds, label %out.of.bounds
|
||
|
|
|
||
|
|
in.bounds:
|
||
|
|
%addr = getelementptr i32, i32* %arr, i32 %idx
|
||
|
|
store i32 0, i32* %addr
|
||
|
|
%next = icmp ult i32 %idx.next, 2147483648
|
||
|
|
br i1 %next, label %loop, label %exit
|
||
|
|
|
||
|
|
out.of.bounds:
|
||
|
|
ret void
|
||
|
|
|
||
|
|
exit:
|
||
|
|
ret void
|
||
|
|
}
|
||
|
|
|
||
|
|
; Check SINT_MAX + 1, test is similar to test_02.
|
||
|
|
define void @test_05(i32* %arr, i32* %a_len_ptr) #0 {
|
||
|
|
; CHECK: test_05(
|
||
|
|
; CHECK: entry:
|
||
|
|
; CHECK-NEXT: %len = load i32, i32* %a_len_ptr, align 4, !range !0
|
||
|
|
; CHECK-NEXT: [[COND1:%[^ ]+]] = icmp ugt i32 %len, 1
|
||
|
|
; CHECK-NEXT: [[UMIN:%[^ ]+]] = select i1 [[COND1]], i32 %len, i32 1
|
||
|
|
; CHECK-NEXT: %exit.preloop.at = add nsw i32 [[UMIN]], -1
|
||
|
|
; CHECK-NEXT: [[COND2:%[^ ]+]] = icmp ugt i32 -2147483648, %exit.preloop.at
|
||
|
|
; CHECK-NEXT: br i1 [[COND2]], label %loop.preloop.preheader, label %preloop.pseudo.exit
|
||
|
|
; CHECK: mainloop:
|
||
|
|
; CHECK-NEXT: br label %loop
|
||
|
|
; CHECK: loop:
|
||
|
|
; CHECK-NEXT: %idx = phi i32 [ %idx.preloop.copy, %mainloop ], [ %idx.next, %in.bounds ]
|
||
|
|
; CHECK-NEXT: %idx.next = add i32 %idx, -1
|
||
|
|
; CHECK-NEXT: %abc = icmp ult i32 %idx, %len
|
||
|
|
; CHECK-NEXT: br i1 true, label %in.bounds, label %out.of.bounds.loopexit1
|
||
|
|
; CHECK-NOT: loop.postloop:
|
||
|
|
; CHECK: loop.preloop:
|
||
|
|
; CHECK-NEXT: %idx.preloop = phi i32 [ %idx.next.preloop, %in.bounds.preloop ], [ -2147483648, %loop.preloop.preheader ]
|
||
|
|
; CHECK-NEXT: %idx.next.preloop = add i32 %idx.preloop, -1
|
||
|
|
; CHECK-NEXT: %abc.preloop = icmp ult i32 %idx.preloop, %len
|
||
|
|
; CHECK-NEXT: br i1 %abc.preloop, label %in.bounds.preloop, label %out.of.bounds.loopexit
|
||
|
|
|
||
|
|
entry:
|
||
|
|
%len = load i32, i32* %a_len_ptr, !range !0
|
||
|
|
br label %loop
|
||
|
|
|
||
|
|
loop:
|
||
|
|
%idx = phi i32 [ 2147483648, %entry ], [ %idx.next, %in.bounds ]
|
||
|
|
%idx.next = add i32 %idx, -1
|
||
|
|
%abc = icmp ult i32 %idx, %len
|
||
|
|
br i1 %abc, label %in.bounds, label %out.of.bounds
|
||
|
|
|
||
|
|
in.bounds:
|
||
|
|
%addr = getelementptr i32, i32* %arr, i32 %idx
|
||
|
|
store i32 0, i32* %addr
|
||
|
|
%next = icmp ult i32 %idx.next, 1
|
||
|
|
br i1 %next, label %exit, label %loop
|
||
|
|
|
||
|
|
out.of.bounds:
|
||
|
|
ret void
|
||
|
|
|
||
|
|
exit:
|
||
|
|
ret void
|
||
|
|
}
|
||
|
|
|
||
|
|
; Increasing loop, UINT_MAX. Positive test.
|
||
|
|
define void @test_06(i32* %arr, i32* %a_len_ptr) #0 {
|
||
|
|
|
||
|
|
; CHECK: test_06
|
||
|
|
; CHECK: entry:
|
||
|
|
; CHECK-NEXT: %exit.mainloop.at = load i32, i32* %a_len_ptr, align 4, !range !0
|
||
|
|
; CHECK-NEXT: [[COND:%[^ ]+]] = icmp ult i32 0, %exit.mainloop.at
|
||
|
|
; CHECK-NEXT: br i1 [[COND]], label %loop.preheader, label %main.pseudo.exit
|
||
|
|
; CHECK: loop:
|
||
|
|
; CHECK-NEXT: %idx = phi i32 [ %idx.next, %in.bounds ], [ 0, %loop.preheader ]
|
||
|
|
; CHECK-NEXT: %idx.next = add nuw nsw i32 %idx, 1
|
||
|
|
; CHECK-NEXT: %abc = icmp ult i32 %idx, %exit.mainloop.at
|
||
|
|
; CHECK-NEXT: br i1 true, label %in.bounds, label %out.of.bounds.loopexit1
|
||
|
|
; CHECK-NOT: loop.preloop:
|
||
|
|
; CHECK: loop.postloop:
|
||
|
|
; CHECK-NEXT: %idx.postloop = phi i32 [ %idx.copy, %postloop ], [ %idx.next.postloop, %in.bounds.postloop ]
|
||
|
|
; CHECK-NEXT: %idx.next.postloop = add nuw nsw i32 %idx.postloop, 1
|
||
|
|
; CHECK-NEXT: %abc.postloop = icmp ult i32 %idx.postloop, %exit.mainloop.at
|
||
|
|
; CHECK-NEXT: br i1 %abc.postloop, label %in.bounds.postloop, label %out.of.bounds.loopexit
|
||
|
|
|
||
|
|
entry:
|
||
|
|
%len = load i32, i32* %a_len_ptr, !range !0
|
||
|
|
br label %loop
|
||
|
|
|
||
|
|
loop:
|
||
|
|
%idx = phi i32 [ 0, %entry ], [ %idx.next, %in.bounds ]
|
||
|
|
%idx.next = add nsw nuw i32 %idx, 1
|
||
|
|
%abc = icmp ult i32 %idx, %len
|
||
|
|
br i1 %abc, label %in.bounds, label %out.of.bounds
|
||
|
|
|
||
|
|
in.bounds:
|
||
|
|
%addr = getelementptr i32, i32* %arr, i32 %idx
|
||
|
|
store i32 0, i32* %addr
|
||
|
|
%next = icmp ult i32 %idx.next, 4294967295
|
||
|
|
br i1 %next, label %loop, label %exit
|
||
|
|
|
||
|
|
out.of.bounds:
|
||
|
|
ret void
|
||
|
|
|
||
|
|
exit:
|
||
|
|
ret void
|
||
|
|
}
|
||
|
|
|
||
|
|
; Decreasing loop, UINT_MAX. Negative test: we cannot substract -1 from 0.
|
||
|
|
define void @test_07(i32* %arr, i32* %a_len_ptr) #0 {
|
||
|
|
|
||
|
|
; CHECK: test_07(
|
||
|
|
; CHECK-NOT: loop.preloop:
|
||
|
|
; CHECK-NOT: loop.postloop:
|
||
|
|
|
||
|
|
entry:
|
||
|
|
%len = load i32, i32* %a_len_ptr, !range !0
|
||
|
|
br label %loop
|
||
|
|
|
||
|
|
loop:
|
||
|
|
%idx = phi i32 [ 4294967295, %entry ], [ %idx.next, %in.bounds ]
|
||
|
|
%idx.next = add nuw i32 %idx, -1
|
||
|
|
%abc = icmp ult i32 %idx, %len
|
||
|
|
br i1 %abc, label %in.bounds, label %out.of.bounds
|
||
|
|
|
||
|
|
in.bounds:
|
||
|
|
%addr = getelementptr i32, i32* %arr, i32 %idx
|
||
|
|
store i32 0, i32* %addr
|
||
|
|
%next = icmp ult i32 %idx.next, 0
|
||
|
|
br i1 %next, label %exit, label %loop
|
||
|
|
|
||
|
|
out.of.bounds:
|
||
|
|
ret void
|
||
|
|
|
||
|
|
exit:
|
||
|
|
ret void
|
||
|
|
}
|
||
|
|
|
||
|
|
; Unsigned walking through signed border is allowed.
|
||
|
|
; Iteration space [0; UINT_MAX - 99), the fact that SINT_MAX is within this
|
||
|
|
; range does not prevent us from performing IRCE.
|
||
|
|
|
||
|
|
define void @test_08(i32* %arr, i32* %a_len_ptr) #0 {
|
||
|
|
|
||
|
|
; CHECK: test_08
|
||
|
|
; CHECK: entry:
|
||
|
|
; CHECK-NEXT: %exit.mainloop.at = load i32, i32* %a_len_ptr, align 4, !range !0
|
||
|
|
; CHECK-NEXT: [[COND:%[^ ]+]] = icmp ult i32 0, %exit.mainloop.at
|
||
|
|
; CHECK-NEXT: br i1 [[COND]], label %loop.preheader, label %main.pseudo.exit
|
||
|
|
; 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, %exit.mainloop.at
|
||
|
|
; CHECK-NEXT: br i1 true, label %in.bounds, label %out.of.bounds.loopexit1
|
||
|
|
; CHECK-NOT: loop.preloop:
|
||
|
|
; CHECK: loop.postloop:
|
||
|
|
; CHECK-NEXT: %idx.postloop = phi i32 [ %idx.copy, %postloop ], [ %idx.next.postloop, %in.bounds.postloop ]
|
||
|
|
; CHECK-NEXT: %idx.next.postloop = add i32 %idx.postloop, 1
|
||
|
|
; CHECK-NEXT: %abc.postloop = icmp ult i32 %idx.postloop, %exit.mainloop.at
|
||
|
|
; CHECK-NEXT: br i1 %abc.postloop, label %in.bounds.postloop, label %out.of.bounds.loopexit
|
||
|
|
|
||
|
|
entry:
|
||
|
|
%len = load i32, i32* %a_len_ptr, !range !0
|
||
|
|
br label %loop
|
||
|
|
|
||
|
|
loop:
|
||
|
|
%idx = phi i32 [ 0, %entry ], [ %idx.next, %in.bounds ]
|
||
|
|
%idx.next = add i32 %idx, 1
|
||
|
|
%abc = icmp ult i32 %idx, %len
|
||
|
|
br i1 %abc, label %in.bounds, label %out.of.bounds
|
||
|
|
|
||
|
|
in.bounds:
|
||
|
|
%addr = getelementptr i32, i32* %arr, i32 %idx
|
||
|
|
store i32 0, i32* %addr
|
||
|
|
%next = icmp ult i32 %idx.next, -100
|
||
|
|
br i1 %next, label %loop, label %exit
|
||
|
|
|
||
|
|
out.of.bounds:
|
||
|
|
ret void
|
||
|
|
|
||
|
|
exit:
|
||
|
|
ret void
|
||
|
|
}
|
||
|
|
|
||
|
|
; Walking through the border of unsigned range is not allowed
|
||
|
|
; (iteration space [-100; 100)). Negative test.
|
||
|
|
|
||
|
|
define void @test_09(i32* %arr, i32* %a_len_ptr) #0 {
|
||
|
|
|
||
|
|
; CHECK: test_09
|
||
|
|
; CHECK-NOT: preloop
|
||
|
|
; CHECK-NOT: postloop
|
||
|
|
; CHECK-NOT: br i1 false
|
||
|
|
; CHECK-NOT: br i1 true
|
||
|
|
|
||
|
|
entry:
|
||
|
|
%len = load i32, i32* %a_len_ptr, !range !0
|
||
|
|
br label %loop
|
||
|
|
|
||
|
|
loop:
|
||
|
|
%idx = phi i32 [ -100, %entry ], [ %idx.next, %in.bounds ]
|
||
|
|
%idx.next = add i32 %idx, 1
|
||
|
|
%abc = icmp ult i32 %idx, %len
|
||
|
|
br i1 %abc, label %in.bounds, label %out.of.bounds
|
||
|
|
|
||
|
|
in.bounds:
|
||
|
|
%addr = getelementptr i32, i32* %arr, i32 %idx
|
||
|
|
store i32 0, i32* %addr
|
||
|
|
%next = icmp ult i32 %idx.next, 100
|
||
|
|
br i1 %next, label %loop, label %exit
|
||
|
|
|
||
|
|
out.of.bounds:
|
||
|
|
ret void
|
||
|
|
|
||
|
|
exit:
|
||
|
|
ret void
|
||
|
|
}
|
||
|
|
|
||
|
|
!0 = !{i32 0, i32 50}
|