AMDGPU/GlobalISel: Fix add of neg inline constant pattern

1 files changed, 6 insertions, 0 deletions

diff --git a/llvm/lib/Target/AMDGPU/AMDGPUInstructionSelector.cpp b/llvm/lib/Target/AMDGPU/AMDGPUInstructionSelector.cpp
index a41c8f1a6a3..a632e7aece1 100644
--- a/llvm/lib/Target/AMDGPU/AMDGPUInstructionSelector.cpp
+++ b/llvm/lib/Target/AMDGPU/AMDGPUInstructionSelector.cpp
@@ -2097,6 +2097,12 @@ void AMDGPUInstructionSelector::renderTruncImm32(MachineInstrBuilder &MIB,
   MIB.addImm(CstVal.getValue());
 }
 
+void AMDGPUInstructionSelector::renderNegateImm(MachineInstrBuilder &MIB,
+                                                const MachineInstr &MI) const {
+  assert(MI.getOpcode() == TargetOpcode::G_CONSTANT && "Expected G_CONSTANT");
+  MIB.addImm(-MI.getOperand(1).getCImm()->getSExtValue());
+}
+
 bool AMDGPUInstructionSelector::isInlineImmediate16(int64_t Imm) const {
   return AMDGPU::isInlinableLiteral16(Imm, STI.hasInv2PiInlineImm());
 }