6502/llvm-6502
1
0
Fork 0
mirror of https://github.com/c64scene-ar/llvm-6502.git synced 2026-04-26 12:20:42 +00:00
Code Issues Projects Releases Wiki Activity

[msan] Handle X86 *.psad.* and *.pmadd.* intrinsics.

Browse Source 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@211156 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Evgeniy Stepanov
2014-06-18 12:02:29 +00:00
parent 5393254646
commit fc72762a0f
2 changed files with 120 additions and 0 deletions
Download Patch File Download Diff File Expand all files Collapse all files
lib/Transforms/Instrumentation/MemorySanitizer.cpp
+55
View File
@@ -2060,6 +2060,40 @@ struct MemorySanitizerVisitor : public InstVisitor<MemorySanitizerVisitor> {
setOriginForNaryOp(I);
}
// \brief Instrument sum-of-absolute-differencies intrinsic.
void handleVectorSadIntrinsic(IntrinsicInst &I) {
const unsigned SignificantBitsPerResultElement = 16;
bool isX86_MMX = I.getOperand(0)->getType()->isX86_MMXTy();
Type *ResTy = isX86_MMX ? IntegerType::get(*MS.C, 64) : I.getType();
unsigned ZeroBitsPerResultElement =
ResTy->getScalarSizeInBits() - SignificantBitsPerResultElement;
IRBuilder<> IRB(&I);
Value *S = IRB.CreateOr(getShadow(&I, 0), getShadow(&I, 1));
S = IRB.CreateBitCast(S, ResTy);
S = IRB.CreateSExt(IRB.CreateICmpNE(S, Constant::getNullValue(ResTy)),
ResTy);
S = IRB.CreateLShr(S, ZeroBitsPerResultElement);
S = IRB.CreateBitCast(S, getShadowTy(&I));
setShadow(&I, S);
setOriginForNaryOp(I);
}
// \brief Instrument multiply-add intrinsic.
void handleVectorPmaddIntrinsic(IntrinsicInst &I,
unsigned EltSizeInBits = 0) {
bool isX86_MMX = I.getOperand(0)->getType()->isX86_MMXTy();
Type *ResTy = isX86_MMX ? getMMXVectorTy(EltSizeInBits * 2) : I.getType();
IRBuilder<> IRB(&I);
Value *S = IRB.CreateOr(getShadow(&I, 0), getShadow(&I, 1));
S = IRB.CreateBitCast(S, ResTy);
S = IRB.CreateSExt(IRB.CreateICmpNE(S, Constant::getNullValue(ResTy)),
ResTy);
S = IRB.CreateBitCast(S, getShadowTy(&I));
setShadow(&I, S);
setOriginForNaryOp(I);
}
void visitIntrinsicInst(IntrinsicInst &I) {
switch (I.getIntrinsicID()) {
case llvm::Intrinsic::bswap:
@@ -2196,6 +2230,27 @@ struct MemorySanitizerVisitor : public InstVisitor<MemorySanitizerVisitor> {
handleVectorPackIntrinsic(I, 32);
break;
case llvm::Intrinsic::x86_mmx_psad_bw:
case llvm::Intrinsic::x86_sse2_psad_bw:
case llvm::Intrinsic::x86_avx2_psad_bw:
handleVectorSadIntrinsic(I);
break;
case llvm::Intrinsic::x86_sse2_pmadd_wd:
case llvm::Intrinsic::x86_avx2_pmadd_wd:
case llvm::Intrinsic::x86_ssse3_pmadd_ub_sw_128:
case llvm::Intrinsic::x86_avx2_pmadd_ub_sw:
handleVectorPmaddIntrinsic(I);
break;
case llvm::Intrinsic::x86_ssse3_pmadd_ub_sw:
handleVectorPmaddIntrinsic(I, 8);
break;
case llvm::Intrinsic::x86_mmx_pmadd_wd:
handleVectorPmaddIntrinsic(I, 16);
break;
default:
if (!handleUnknownIntrinsic(I))
visitInstruction(I);