69 lines
2.1 KiB
LLVM
69 lines
2.1 KiB
LLVM
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; RUN: opt -passes 'loop-reduce' -scalar-evolution-max-arith-depth=2 -S < %s | FileCheck %s
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; RUN: opt -loop-reduce -scalar-evolution-max-arith-depth=2 -S < %s | FileCheck %s
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; This test should just compile cleanly without assertions.
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target datalayout = "e-m:e-p270:32:32-p271:32:32-p272:64:64-i64:64-f80:128-n8:16:32:64-S128-ni:1-p2:32:8:8:32-ni:2"
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define void @test(i32 %A, i32 %B, i32 %C) {
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; CHECK-LABEL: @test(
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; CHECK: inner_loop:
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; CHECK-NEXT: [[LSR_IV3:%.*]] = phi i32
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; CHECK-NEXT: [[LSR_IV1:%.*]] = phi i32
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; CHECK-NEXT: [[LSR_IV:%.*]] = phi i32
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; CHECK: [[LSR_IV_NEXT:%.*]] = add i32 [[LSR_IV]], 3
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; CHECK-NEXT: [[LSR_IV_NEXT2:%.*]] = add i32 [[LSR_IV1]], 3
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; CHECK-NEXT: [[LSR_IV_NEXT4:%.*]] = add i32 [[LSR_IV3]], -3
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;
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entry:
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br label %outer_loop
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outer_loop:
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%phi2 = phi i32 [ %A, %entry ], [ 204, %outer_tail ]
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%phi3 = phi i32 [ %A, %entry ], [ 243, %outer_tail ]
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%phi4 = phi i32 [ %B, %entry ], [ %i35, %outer_tail ]
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br label %guard
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guard:
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%lcmp.mod = icmp eq i32 %C, 0
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br i1 %lcmp.mod, label %outer_tail, label %preheader
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preheader:
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%i15 = shl i32 %B, 1
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br label %inner_loop
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inner_loop:
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%phi5 = phi i32 [ %phi3, %preheader ], [ %i30, %inner_loop ]
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%phi6 = phi i32 [ %phi2, %preheader ], [ %i33, %inner_loop ]
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%iter = phi i32 [ %C, %preheader ], [ %iter.sub, %inner_loop ]
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%i17 = sub i32 %phi4, %phi6
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%i18 = sub i32 14, %phi5
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%i19 = mul i32 %i18, %C
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%factor.prol = shl i32 %phi5, 1
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%i20 = add i32 %i17, %factor.prol
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%i21 = add i32 %i20, %B
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%i22 = add i32 %i21, %i19
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%i23 = sub i32 14, %i22
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%i24 = mul i32 %i23, %C
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%factor.1.prol = shl i32 %i22, 1
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%i25 = add i32 %i17, %factor.1.prol
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%i27 = add i32 %i25, %i24
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%i29 = mul i32 %i25, %C
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%factor.2.prol = shl i32 %i27, 1
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%i30 = add i32 %i17, %factor.2.prol
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%i33 = add nsw i32 %phi6, -3
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%iter.sub = add i32 %iter, -1
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%iter.cmp = icmp eq i32 %iter.sub, 0
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br i1 %iter.cmp, label %outer_tail, label %inner_loop
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outer_tail:
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%phi7 = phi i32 [ %phi2, %guard ], [ %i33, %inner_loop ]
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%i35 = sub i32 %A, %phi7
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%cmp = icmp sgt i32 %i35, 9876
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br i1 %cmp, label %exit, label %outer_loop
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exit:
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ret void
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}
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