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| author | Tom Stellard <tstellar@redhat.com> | 2017-11-28 22:02:15 +0000 |
|---|---|---|
| committer | Tom Stellard <tstellar@redhat.com> | 2017-11-28 22:02:15 +0000 |
| commit | 9bc5c8821866ecc04eda587de23dd4b009760265 (patch) | |
| tree | 051e620264b40a7fb76bd30ca825d53571e856cc /test/CodeGen | |
| parent | 3e430490419645a35399e7937d96482681984e47 (diff) | |
Merging r316035:
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r316035 | tnorthover | 2017-10-17 14:43:52 -0700 (Tue, 17 Oct 2017) | 6 lines
AArch64: account for possible frame index operand in compares.
If the address of a local is used in a comparison, AArch64 can fold the
address-calculation into the comparison via "adds". Unfortunately, a couple of
places (both hit in this one test) are not ready to deal with that yet and just
assume the first source operand is a register.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/branches/release_50@319231 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'test/CodeGen')
| -rw-r--r-- | test/CodeGen/AArch64/cmp-frameindex.ll | 19 |
1 files changed, 19 insertions, 0 deletions
diff --git a/test/CodeGen/AArch64/cmp-frameindex.ll b/test/CodeGen/AArch64/cmp-frameindex.ll new file mode 100644 index 000000000000..2d01b76e186c --- /dev/null +++ b/test/CodeGen/AArch64/cmp-frameindex.ll @@ -0,0 +1,19 @@ +; RUN: llc -mtriple=aarch64 %s -o - | FileCheck %s + +; CHECK: test_frameindex_cmp: +; CHECK: cmn sp, #{{[0-9]+}} +define void @test_frameindex_cmp() { + %stack = alloca i8 + %stack.int = ptrtoint i8* %stack to i64 + %cmp = icmp ne i64 %stack.int, 0 + br i1 %cmp, label %bb1, label %bb2 + +bb1: + call void @bar() + ret void + +bb2: + ret void +} + +declare void @bar() |