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Merging r202336:

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r202336 | michel.daenzer | 2014-02-26 17:47:02 -0800 (Wed, 26 Feb 2014) | 4 lines

R600/SI: Allow SI_KILL for geometry shaders

Reviewed-by: Tom Stellard <thomas.stellard@amd.com>

git-svn-id: https://llvm.org/svn/llvm-project/llvm/branches/release_34@204638 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Tom Stellard 2014-03-24 18:21:25 +00:00
parent 2087afe423
commit cba1dff815
2 changed files with 25 additions and 3 deletions
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10
lib/Target/R600/SILowerControlFlow.cpp
View File

@ -145,7 +145,9 @@ void SILowerControlFlowPass::SkipIfDead(MachineInstr &MI) {
MachineBasicBlock &MBB = *MI.getParent();
DebugLoc DL = MI.getDebugLoc();
if (!shouldSkip(&MBB, &MBB.getParent()->back()))
if (MBB.getParent()->getInfo<SIMachineFunctionInfo>()->ShaderType !=
ShaderType::PIXEL ||
!shouldSkip(&MBB, &MBB.getParent()->back()))
return;
MachineBasicBlock::iterator Insert = &MI;
@ -296,9 +298,11 @@ void SILowerControlFlowPass::Kill(MachineInstr &MI) {
MachineBasicBlock &MBB = *MI.getParent();
DebugLoc DL = MI.getDebugLoc();
// Kill is only allowed in pixel shaders
// Kill is only allowed in pixel / geometry shaders
assert(MBB.getParent()->getInfo<SIMachineFunctionInfo>()->ShaderType ==
ShaderType::PIXEL);
ShaderType::PIXEL ||
MBB.getParent()->getInfo<SIMachineFunctionInfo>()->ShaderType ==
ShaderType::GEOMETRY);
// Clear this pixel from the exec mask if the operand is negative
BuildMI(MBB, &MI, DL, TII->get(AMDGPU::V_CMPX_LE_F32_e32), AMDGPU::VCC)

18
test/CodeGen/R600/llvm.AMDGPU.kill.ll Normal file
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@ -0,0 +1,18 @@
; RUN: llc < %s -march=r600 -mcpu=verde -verify-machineinstrs | FileCheck --check-prefix=SI %s
; SI-LABEL: @kill_gs
; SI: V_CMPX_LE_F32
define void @kill_gs() #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)
ret void
}
declare void @llvm.AMDGPU.kill(float)
attributes #0 = { "ShaderType"="2" }
!0 = metadata !{metadata !"const", null, i32 1}