[PATCH] D61031: [AMDGPU] Fixed addReg() in SIOptimizeExecMaskingPreRA.cpp
Stanislav Mekhanoshin via Phabricator via llvm-commits
llvm-commits at lists.llvm.org
Tue Apr 23 10:54:07 PDT 2019
rampitec created this revision.
rampitec added reviewers: msearles, kzhuravl.
Herald added subscribers: t-tye, tpr, dstuttard, yaxunl, nhaehnle, wdng, jvesely, arsenm.
The second argument is flags, not subreg.
https://reviews.llvm.org/D61031
Files:
lib/Target/AMDGPU/SIOptimizeExecMaskingPreRA.cpp
test/CodeGen/AMDGPU/optimize-negated-cond-exec-masking.mir
Index: test/CodeGen/AMDGPU/optimize-negated-cond-exec-masking.mir
===================================================================
--- test/CodeGen/AMDGPU/optimize-negated-cond-exec-masking.mir
+++ test/CodeGen/AMDGPU/optimize-negated-cond-exec-masking.mir
@@ -463,3 +463,25 @@
bb.4:
S_ENDPGM 0
...
+
+# GCN: name: negated_cond_subreg
+# GCN: %0.sub0_sub1:sreg_128 = IMPLICIT_DEF
+# GCN-NEXT: $vcc = S_ANDN2_B64 $exec, %0.sub0_sub1, implicit-def $scc
+# GCN-NEXT: S_CBRANCH_VCCNZ %bb.2, implicit $vcc
+---
+name: negated_cond_subreg
+body: |
+ bb.0:
+ %0.sub0_sub1:sreg_128 = IMPLICIT_DEF
+ %1:vgpr_32 = V_CNDMASK_B32_e64 0, 0, 0, 1, %0.sub0_sub1, implicit $exec
+ %2.sub0_sub1:sreg_128 = V_CMP_NE_U32_e64 %1, 1, implicit $exec
+ $vcc = S_AND_B64 $exec, killed %2.sub0_sub1:sreg_128, implicit-def dead $scc
+ S_CBRANCH_VCCNZ %bb.2, implicit killed $vcc
+ S_BRANCH %bb.1
+
+ bb.1:
+ S_BRANCH %bb.0
+
+ bb.2:
+ S_ENDPGM 0
+...
Index: lib/Target/AMDGPU/SIOptimizeExecMaskingPreRA.cpp
===================================================================
--- lib/Target/AMDGPU/SIOptimizeExecMaskingPreRA.cpp
+++ lib/Target/AMDGPU/SIOptimizeExecMaskingPreRA.cpp
@@ -246,7 +246,7 @@
MachineInstr *Andn2 = BuildMI(MBB, *And, And->getDebugLoc(),
TII->get(Andn2Opc), And->getOperand(0).getReg())
.addReg(ExecReg)
- .addReg(CCReg, CC->getSubReg());
+ .addReg(CCReg, 0, CC->getSubReg());
And->eraseFromParent();
LIS->InsertMachineInstrInMaps(*Andn2);
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