[llvm] r324550 - AMDGPU: Don't crash when trying to fold implicit operands
Matt Arsenault via llvm-commits
llvm-commits at lists.llvm.org
Wed Feb 7 17:12:46 PST 2018
Author: arsenm
Date: Wed Feb 7 17:12:46 2018
New Revision: 324550
URL: http://llvm.org/viewvc/llvm-project?rev=324550&view=rev
Log:
AMDGPU: Don't crash when trying to fold implicit operands
Added:
llvm/trunk/test/CodeGen/AMDGPU/fold-implicit-operand.mir
Modified:
llvm/trunk/lib/Target/AMDGPU/SIFoldOperands.cpp
Modified: llvm/trunk/lib/Target/AMDGPU/SIFoldOperands.cpp
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/Target/AMDGPU/SIFoldOperands.cpp?rev=324550&r1=324549&r2=324550&view=diff
==============================================================================
--- llvm/trunk/lib/Target/AMDGPU/SIFoldOperands.cpp (original)
+++ llvm/trunk/lib/Target/AMDGPU/SIFoldOperands.cpp Wed Feb 7 17:12:46 2018
@@ -345,6 +345,7 @@ void SIFoldOperands::foldOperand(
// Don't fold into target independent nodes. Target independent opcodes
// don't have defined register classes.
if (UseDesc.isVariadic() ||
+ UseOp.isImplicit() ||
UseDesc.OpInfo[UseOpIdx].RegClass == -1)
return;
}
Added: llvm/trunk/test/CodeGen/AMDGPU/fold-implicit-operand.mir
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/test/CodeGen/AMDGPU/fold-implicit-operand.mir?rev=324550&view=auto
==============================================================================
--- llvm/trunk/test/CodeGen/AMDGPU/fold-implicit-operand.mir (added)
+++ llvm/trunk/test/CodeGen/AMDGPU/fold-implicit-operand.mir Wed Feb 7 17:12:46 2018
@@ -0,0 +1,14 @@
+# RUN: llc -march=amdgcn -run-pass si-fold-operands -verify-machineinstrs -o - %s | FileCheck %s
+---
+# Make sure there is no crash when trying to fold an immediate into an
+# implicit use
+
+# CHECK: %0:vgpr_32 = V_MOV_B32_e32 0, implicit $exec
+# CHECK-NEXT: S_ENDPGM implicit %0
+name: fold_imm_implicit_operand
+body: |
+ bb.0:
+ %0:vgpr_32 = V_MOV_B32_e32 0, implicit $exec
+ S_ENDPGM implicit %0
+
+...
More information about the llvm-commits
mailing list