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644aecfc97
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
23 lines
608 B
LLVM
23 lines
608 B
LLVM
; RUN: llc < %s -march=r600 -mcpu=verde -verify-machineinstrs | FileCheck --check-prefix=SI %s
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; SI-LABEL: @kill_gs_const
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; SI-NOT: V_CMPX_LE_F32
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; SI: S_MOV_B64 exec, 0
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define void @kill_gs_const() #0 {
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main_body:
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%0 = icmp ule i32 0, 3
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%1 = select i1 %0, float 1.000000e+00, float -1.000000e+00
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call void @llvm.AMDGPU.kill(float %1)
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%2 = icmp ule i32 3, 0
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%3 = select i1 %2, float 1.000000e+00, float -1.000000e+00
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call void @llvm.AMDGPU.kill(float %3)
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ret void
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}
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declare void @llvm.AMDGPU.kill(float)
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attributes #0 = { "ShaderType"="2" }
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!0 = metadata !{metadata !"const", null, i32 1}
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