Mercurial > hg > CbC > CbC_llvm
view polly/test/GPGPU/invariant-load-escaping-values.ll @ 252:1f2b6ac9f198 llvm-original
LLVM16-1
author | Shinji KONO <kono@ie.u-ryukyu.ac.jp> |
---|---|
date | Fri, 18 Aug 2023 09:04:13 +0900 |
parents | 1d019706d866 |
children |
line wrap: on
line source
; 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 }