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| author | Stephen Hines <srhines@google.com> | 2014-05-29 02:49:00 -0700 |
|---|---|---|
| committer | Stephen Hines <srhines@google.com> | 2014-05-29 02:49:00 -0700 |
| commit | dce4a407a24b04eebc6a376f8e62b41aaa7b071f (patch) | |
| tree | dcebc53f2b182f145a2e659393bf9a0472cedf23 /test/CodeGen/AArch64/arm64-icmp-opt.ll | |
| parent | 220b921aed042f9e520c26cffd8282a94c66c3d5 (diff) | |
| download | external_llvm-dce4a407a24b04eebc6a376f8e62b41aaa7b071f.zip external_llvm-dce4a407a24b04eebc6a376f8e62b41aaa7b071f.tar.gz external_llvm-dce4a407a24b04eebc6a376f8e62b41aaa7b071f.tar.bz2 | |
Update LLVM for 3.5 rebase (r209712).
Change-Id: I149556c940fb7dc92d075273c87ff584f400941f
Diffstat (limited to 'test/CodeGen/AArch64/arm64-icmp-opt.ll')
| -rw-r--r-- | test/CodeGen/AArch64/arm64-icmp-opt.ll | 17 |
1 files changed, 17 insertions, 0 deletions
diff --git a/test/CodeGen/AArch64/arm64-icmp-opt.ll b/test/CodeGen/AArch64/arm64-icmp-opt.ll new file mode 100644 index 0000000..7b12ed7 --- /dev/null +++ b/test/CodeGen/AArch64/arm64-icmp-opt.ll @@ -0,0 +1,17 @@ +; RUN: llc < %s -march=arm64 | FileCheck %s + +; Optimize (x > -1) to (x >= 0) etc. +; Optimize (cmp (add / sub), 0): eliminate the subs used to update flag +; for comparison only +; rdar://10233472 + +define i32 @t1(i64 %a) nounwind ssp { +entry: +; CHECK-LABEL: t1: +; CHECK-NOT: movn +; CHECK: cmp x0, #0 +; CHECK: cset w0, ge + %cmp = icmp sgt i64 %a, -1 + %conv = zext i1 %cmp to i32 + ret i32 %conv +} |