GlobalISel: add G_IMPLICIT_DEF instruction.
It looks like there are two target-independent but not GISel instructions that
need legalization, IMPLICIT_DEF and PHI. These are already anomalies since
their operands have important LLTs attached, so to make things more uniform it
seems like a good idea to add generic variants. Starting with G_IMPLICIT_DEF.
llvm-svn: 306875
diff --git a/llvm/lib/CodeGen/GlobalISel/MachineIRBuilder.cpp b/llvm/lib/CodeGen/GlobalISel/MachineIRBuilder.cpp
index 3424f09..47c6214 100644
--- a/llvm/lib/CodeGen/GlobalISel/MachineIRBuilder.cpp
+++ b/llvm/lib/CodeGen/GlobalISel/MachineIRBuilder.cpp
@@ -478,7 +478,7 @@
}
MachineInstrBuilder MachineIRBuilder::buildUndef(unsigned Res) {
- return buildInstr(TargetOpcode::IMPLICIT_DEF).addDef(Res);
+ return buildInstr(TargetOpcode::G_IMPLICIT_DEF).addDef(Res);
}
MachineInstrBuilder MachineIRBuilder::buildMerge(unsigned Res,