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