44 lines
993 B
LLVM
44 lines
993 B
LLVM
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; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
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; RUN: opt -licm -S < %s | FileCheck %s
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define void @hoist(i1 %a) {
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; CHECK-LABEL: @hoist(
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; CHECK-NEXT: entry:
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; CHECK-NEXT: [[B:%.*]] = freeze i1 [[A:%.*]]
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; CHECK-NEXT: br label [[LOOP:%.*]]
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; CHECK: loop:
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; CHECK-NEXT: call void @use(i1 [[B]])
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; CHECK-NEXT: br label [[LOOP]]
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;
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entry:
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br label %loop
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loop:
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%b = freeze i1 %a
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call void @use(i1 %b)
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br label %loop
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}
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define i1 @sink(i1 %a) {
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; CHECK-LABEL: @sink(
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; CHECK-NEXT: entry:
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; CHECK-NEXT: br label [[LOOP:%.*]]
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; CHECK: loop:
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; CHECK-NEXT: [[C:%.*]] = call i1 @cond()
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; CHECK-NEXT: br i1 [[C]], label [[LOOP]], label [[EXIT:%.*]]
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; CHECK: exit:
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; CHECK-NEXT: [[FR_LE:%.*]] = freeze i1 [[A:%.*]]
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; CHECK-NEXT: ret i1 [[FR_LE]]
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;
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entry:
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br label %loop
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loop:
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%fr = freeze i1 %a
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%c = call i1 @cond()
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br i1 %c, label %loop, label %exit
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exit:
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ret i1 %fr
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}
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declare i1 @cond()
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declare void @use(i1)
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