[AArch64][GlobalISel] Legalize vector boolean bitcasts to scalars by lowering via stack.
Reviewers: davemgreen, topperc, arsenm
Reviewed By: arsenm
Pull Request: https://github.com/llvm/llvm-project/pull/121171
diff --git a/llvm/lib/CodeGen/GlobalISel/LegalizerHelper.cpp b/llvm/lib/CodeGen/GlobalISel/LegalizerHelper.cpp
index 7af074a..7dece93 100644
--- a/llvm/lib/CodeGen/GlobalISel/LegalizerHelper.cpp
+++ b/llvm/lib/CodeGen/GlobalISel/LegalizerHelper.cpp
@@ -22,6 +22,7 @@
#include "llvm/CodeGen/GlobalISel/MIPatternMatch.h"
#include "llvm/CodeGen/GlobalISel/MachineIRBuilder.h"
#include "llvm/CodeGen/GlobalISel/Utils.h"
+#include "llvm/CodeGen/LowLevelTypeUtils.h"
#include "llvm/CodeGen/MachineConstantPool.h"
#include "llvm/CodeGen/MachineFrameInfo.h"
#include "llvm/CodeGen/MachineRegisterInfo.h"
@@ -4664,6 +4665,20 @@
return MIRBuilder.buildFrameIndex(FramePtrTy, FrameIdx);
}
+MachineInstrBuilder LegalizerHelper::createStackStoreLoad(const DstOp &Res,
+ const SrcOp &Val) {
+ LLT SrcTy = Val.getLLTTy(MRI);
+ Align StackTypeAlign =
+ std::max(getStackTemporaryAlignment(SrcTy),
+ getStackTemporaryAlignment(Res.getLLTTy(MRI)));
+ MachinePointerInfo PtrInfo;
+ auto StackTemp =
+ createStackTemporary(SrcTy.getSizeInBytes(), StackTypeAlign, PtrInfo);
+
+ MIRBuilder.buildStore(Val, StackTemp, PtrInfo, StackTypeAlign);
+ return MIRBuilder.buildLoad(Res, StackTemp, PtrInfo, StackTypeAlign);
+}
+
static Register clampVectorIndex(MachineIRBuilder &B, Register IdxReg,
LLT VecTy) {
LLT IdxTy = B.getMRI()->getType(IdxReg);