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| author | Anton Korobeynikov <asl@math.spbu.ru> | 2011-10-07 16:15:08 +0000 |
|---|---|---|
| committer | Anton Korobeynikov <asl@math.spbu.ru> | 2011-10-07 16:15:08 +0000 |
| commit | 244455e6d6bb95c5e556ace66adb148dbcd16a27 (patch) | |
| tree | 4f53569ab317f3e7df55bf6e4eab1757229856ae /test/CodeGen/ARM/iabs.ll | |
| parent | 3f329cb781492e19a72af267cd3b7c2d8307a818 (diff) | |
| download | llvm-244455e6d6bb95c5e556ace66adb148dbcd16a27.tar.gz llvm-244455e6d6bb95c5e556ace66adb148dbcd16a27.tar.bz2 llvm-244455e6d6bb95c5e556ace66adb148dbcd16a27.tar.xz | |
Peephole optimization for ABS on ARM.
Patch by Ana Pazos!
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@141365 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'test/CodeGen/ARM/iabs.ll')
| -rw-r--r-- | test/CodeGen/ARM/iabs.ll | 8 |
1 files changed, 4 insertions, 4 deletions
diff --git a/test/CodeGen/ARM/iabs.ll b/test/CodeGen/ARM/iabs.ll index c01c041cfe..89e309d160 100644 --- a/test/CodeGen/ARM/iabs.ll +++ b/test/CodeGen/ARM/iabs.ll @@ -1,8 +1,8 @@ ; RUN: llc < %s -march=arm -mattr=+v4t | FileCheck %s ;; Integer absolute value, should produce something as good as: ARM: -;; add r3, r0, r0, asr #31 -;; eor r0, r3, r0, asr #31 +;; movs r0, r0 +;; rsbmi r0, r0, #0 ;; bx lr define i32 @test(i32 %a) { @@ -10,7 +10,7 @@ define i32 @test(i32 %a) { %b = icmp sgt i32 %a, -1 %abs = select i1 %b, i32 %a, i32 %tmp1neg ret i32 %abs -; CHECK: add r1, r0, r0, asr #31 -; CHECK: eor r0, r1, r0, asr #31 +; CHECK: movs r0, r0 +; CHECK: rsbmi r0, r0, #0 ; CHECK: bx lr } |