forked from OSchip/llvm-project
31 lines
997 B
LLVM
31 lines
997 B
LLVM
; RUN: opt %loadPolly -S -polly-codegen-ppcg \
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; RUN: -polly-invariant-load-hoisting < %s | FileCheck %s
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; REQUIRES: pollyacc
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; CHECK: store i64 %polly.access.B.load, i64* %invariant.preload.s2a
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; CHECK: %invariant.final_reload = load i64, i64* %invariant.preload.s2a
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; Verify that the final reload of an invariant scalar memory access uses the
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; same stack slot that into which the invariant memory access was stored
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; originally. Earlier, this was broken as we introduce a new stack slot aside
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; of the preload stack slot, which remained uninitialized and caused our escaping
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; loads to contain garbage.
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define i64 @foo(float* %A, i64* %B) {
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entry:
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br label %loop
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loop:
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%indvar = phi i64 [0, %entry], [%indvar.next, %loop]
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%indvar.next = add nsw i64 %indvar, 1
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%idx = getelementptr float, float* %A, i64 %indvar
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store float 42.0, float* %idx
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%invariant = load i64, i64* %B
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%cmp = icmp sle i64 %indvar, 1024
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br i1 %cmp, label %loop, label %exit
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exit:
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ret i64 %invariant
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}
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