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[GISel]: Add pattern matchers for G_BITCAST/PTRTOINT/INTTOPTR

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Adds pattern matchers for the above along with unit tests for the same.
https://reviews.llvm.org/D43479

llvm-svn: 325542
This commit is contained in:
Aditya Nandakumar 2018-02-19 23:11:53 +00:00
parent ec74b351d9
commit d8a3a0d897
2 changed files with 32 additions and 0 deletions
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18
include/llvm/CodeGen/GlobalISel/MIPatternMatch.h
View File

@ -262,6 +262,24 @@ inline UnaryOp_match<SrcTy, TargetOpcode::G_TRUNC> m_GTrunc(const SrcTy &Src) {
return UnaryOp_match<SrcTy, TargetOpcode::G_TRUNC>(Src);
}
template <typename SrcTy>
inline UnaryOp_match<SrcTy, TargetOpcode::G_BITCAST>
m_GBitcast(const SrcTy &Src) {
return UnaryOp_match<SrcTy, TargetOpcode::G_BITCAST>(Src);
}
template <typename SrcTy>
inline UnaryOp_match<SrcTy, TargetOpcode::G_PTRTOINT>
m_GPtrToInt(const SrcTy &Src) {
return UnaryOp_match<SrcTy, TargetOpcode::G_PTRTOINT>(Src);
}
template <typename SrcTy>
inline UnaryOp_match<SrcTy, TargetOpcode::G_INTTOPTR>
m_GIntToPtr(const SrcTy &Src) {
return UnaryOp_match<SrcTy, TargetOpcode::G_INTTOPTR>(Src);
}
template <typename SrcTy>
inline UnaryOp_match<SrcTy, TargetOpcode::G_FPTRUNC>
m_GFPTrunc(const SrcTy &Src) {

14
unittests/CodeGen/GlobalISel/PatternMatchTest.cpp
View File

@ -313,10 +313,24 @@ TEST(PatternMatchInstr, MatchSpecificType) {
// Try to match the destination type of a bitcast.
LLT v2s32 = LLT::vector(2, 32);
auto MIBCast = B.buildCast(v2s32, Copies[0]);
ASSERT_TRUE(
mi_match(MIBCast->getOperand(0).getReg(), MRI, m_GBitcast(m_Reg())));
ASSERT_TRUE(
mi_match(MIBCast->getOperand(0).getReg(), MRI, m_SpecificType(v2s32)));
ASSERT_TRUE(
mi_match(MIBCast->getOperand(1).getReg(), MRI, m_SpecificType(s64)));
// Build a PTRToInt and INTTOPTR and match and test them.
LLT PtrTy = LLT::pointer(0, 64);
auto MIBIntToPtr = B.buildCast(PtrTy, Copies[0]);
auto MIBPtrToInt = B.buildCast(s64, MIBIntToPtr);
unsigned Src0;
// match the ptrtoint(inttoptr reg)
bool match = mi_match(MIBPtrToInt->getOperand(0).getReg(), MRI,
m_GPtrToInt(m_GIntToPtr(m_Reg(Src0))));
ASSERT_TRUE(match);
ASSERT_EQ(Src0, Copies[0]);
}
TEST(PatternMatchInstr, MatchCombinators) {