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| author | Michel Danzer <michel.daenzer@amd.com> | 2014-02-27 01:47:09 +0000 |
|---|---|---|
| committer | Michel Danzer <michel.daenzer@amd.com> | 2014-02-27 01:47:09 +0000 |
| commit | 644aecfc973e6b899230a3c7eb7541c948e69522 (patch) | |
| tree | 3e540e03f1a4a7d908d296b4e6fb08607ae592e3 /test/CodeGen | |
| parent | a5fbf2471688af979966da0d540875ec43308b07 (diff) | |
| download | llvm-644aecfc973e6b899230a3c7eb7541c948e69522.tar.gz llvm-644aecfc973e6b899230a3c7eb7541c948e69522.tar.bz2 llvm-644aecfc973e6b899230a3c7eb7541c948e69522.tar.xz | |
R600/SI: Optimize SI_KILL for constant operands
If the SI_KILL operand is constant, we can either clear the exec mask if
the operand is negative, or do nothing otherwise.
Reviewed-by: Tom Stellard <thomas.stellard@amd.com>
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@202337 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'test/CodeGen')
| -rw-r--r-- | test/CodeGen/R600/llvm.AMDGPU.kill.ll | 10 |
1 files changed, 7 insertions, 3 deletions
diff --git a/test/CodeGen/R600/llvm.AMDGPU.kill.ll b/test/CodeGen/R600/llvm.AMDGPU.kill.ll index bec5cdf65f..4ab6a8ae09 100644 --- a/test/CodeGen/R600/llvm.AMDGPU.kill.ll +++ b/test/CodeGen/R600/llvm.AMDGPU.kill.ll @@ -1,13 +1,17 @@ ; RUN: llc < %s -march=r600 -mcpu=verde -verify-machineinstrs | FileCheck --check-prefix=SI %s -; SI-LABEL: @kill_gs -; SI: V_CMPX_LE_F32 +; SI-LABEL: @kill_gs_const +; SI-NOT: V_CMPX_LE_F32 +; SI: S_MOV_B64 exec, 0 -define void @kill_gs() #0 { +define void @kill_gs_const() #0 { main_body: %0 = icmp ule i32 0, 3 %1 = select i1 %0, float 1.000000e+00, float -1.000000e+00 call void @llvm.AMDGPU.kill(float %1) + %2 = icmp ule i32 3, 0 + %3 = select i1 %2, float 1.000000e+00, float -1.000000e+00 + call void @llvm.AMDGPU.kill(float %3) ret void } |