forked from OSchip/llvm-project
55 lines
1.3 KiB
LLVM
55 lines
1.3 KiB
LLVM
; RUN: opt < %s -correlated-propagation -S | FileCheck %s
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; CHECK-LABEL: @test0(
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define void @test0(i32 %n) {
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entry:
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br label %for.cond
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for.cond: ; preds = %for.body, %entry
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%j.0 = phi i32 [ %n, %entry ], [ %div, %for.body ]
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%cmp = icmp sgt i32 %j.0, 1
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br i1 %cmp, label %for.body, label %for.end
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for.body: ; preds = %for.cond
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; CHECK: %div1 = udiv i32 %j.0, 2
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%div = sdiv i32 %j.0, 2
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br label %for.cond
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for.end: ; preds = %for.cond
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ret void
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}
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; CHECK-LABEL: @test1(
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define void @test1(i32 %n) {
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entry:
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br label %for.cond
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for.cond: ; preds = %for.body, %entry
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%j.0 = phi i32 [ %n, %entry ], [ %div, %for.body ]
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%cmp = icmp sgt i32 %j.0, -2
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br i1 %cmp, label %for.body, label %for.end
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for.body: ; preds = %for.cond
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; CHECK: %div = sdiv i32 %j.0, 2
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%div = sdiv i32 %j.0, 2
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br label %for.cond
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for.end: ; preds = %for.cond
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ret void
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}
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; CHECK-LABEL: @test2(
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define void @test2(i32 %n) {
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entry:
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%cmp = icmp sgt i32 %n, 1
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br i1 %cmp, label %bb, label %exit
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bb:
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; CHECK: %div1 = udiv i32 %n, 2
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%div = sdiv i32 %n, 2
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br label %exit
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exit:
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ret void
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}
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