| ; RUN: opt %loadPolly -polly-codegen-ppcg -polly-invariant-load-hoisting \ |
| ; RUN: -S < %s | \ |
| ; RUN: FileCheck -check-prefix=HOST-IR %s |
| |
| ; RUN: opt %loadPolly -disable-output -polly-acc-dump-kernel-ir \ |
| ; RUN: -polly-codegen-ppcg -polly-scops \ |
| ; RUN: -polly-invariant-load-hoisting < %s | FileCheck -check-prefix=KERNEL-IR %s |
| |
| ; REQUIRES: pollyacc |
| |
| ; Verify that invariant loads used in a kernel statement are correctly forwarded |
| ; as subtree value to the GPU kernel. |
| |
| ; HOST-IR: store float %polly.access.p.load, float* %invariant.preload.s2a, align 4 |
| |
| ; KERNEL-IR: define ptx_kernel void @FUNC_foo_SCOP_0_KERNEL_2({{.*}}i8 addrspace(1)* %MemRef_indvar2f__phi{{.*}}) |
| ; KERNEL-IR: %indvar2f.phiops.reload = load float, float* %indvar2f.phiops, align 4 |
| ; KERNEL-IR: store float %indvar2f.phiops.reload, float addrspace(1)* %polly.access.MemRef_A, align 4 |
| |
| ; FIXME: store float %indvar2f.phiops.reload, float* %indvar2f.phiops, align 4 |
| ; For some reason the above instruction is emitted that stores back to the addess it was just loaded from. |
| |
| define void @foo(float* %A, float* %p) { |
| entry: |
| br label %loop |
| |
| loop: |
| %indvar = phi i64 [0, %entry], [%indvar.next, %loop] |
| %indvar.next = add i64 %indvar, 1 |
| %invariant = load float, float* %p |
| %ptr = getelementptr float, float* %A, i64 %indvar |
| store float 42.0, float* %ptr |
| %cmp = icmp sle i64 %indvar, 1024 |
| br i1 %cmp, label %loop, label %anotherloop |
| |
| anotherloop: |
| %indvar2 = phi i64 [0, %loop], [%indvar2.next, %anotherloop] |
| %indvar2f = phi float [%invariant, %loop], [%indvar2f, %anotherloop] |
| %indvar2.next = add i64 %indvar2, 1 |
| store float %indvar2f, float* %A |
| %cmp2 = icmp sle i64 %indvar2, 1024 |
| br i1 %cmp2, label %anotherloop, label %end |
| |
| end: |
| ret void |
| |
| } |