[GISel]: Fix pattern matcher for m_OneUse
https://reviews.llvm.org/D63302
llvm-svn: 363424
diff --git a/llvm/unittests/CodeGen/GlobalISel/PatternMatchTest.cpp b/llvm/unittests/CodeGen/GlobalISel/PatternMatchTest.cpp
index 1bb07a9..f7dda96 100644
--- a/llvm/unittests/CodeGen/GlobalISel/PatternMatchTest.cpp
+++ b/llvm/unittests/CodeGen/GlobalISel/PatternMatchTest.cpp
@@ -484,6 +484,31 @@
m_any_of(m_SpecificType(LLT::scalar(16)), m_GSub(m_Reg(), m_Reg())));
EXPECT_FALSE(match);
}
+
+TEST(PatternMatchInstr, MatchMiscellaneous) {
+ LLVMContext Context;
+ std::unique_ptr<LLVMTargetMachine> TM = createTargetMachine();
+ if (!TM)
+ return;
+ auto ModuleMMIPair = createDummyModule(Context, *TM, "");
+ MachineFunction *MF =
+ getMFFromMMI(ModuleMMIPair.first.get(), ModuleMMIPair.second.get());
+ SmallVector<unsigned, 4> Copies;
+ collectCopies(Copies, MF);
+ MachineBasicBlock *EntryMBB = &*MF->begin();
+ MachineIRBuilder B(*MF);
+ MachineRegisterInfo &MRI = MF->getRegInfo();
+ B.setInsertPt(*EntryMBB, EntryMBB->end());
+ LLT s64 = LLT::scalar(64);
+ auto MIBAdd = B.buildAdd(s64, Copies[0], Copies[1]);
+ // Make multiple uses of this add.
+ B.buildCast(LLT::pointer(0, 32), MIBAdd);
+ B.buildCast(LLT::pointer(1, 32), MIBAdd);
+ bool match = mi_match(MIBAdd.getReg(0), MRI, m_GAdd(m_Reg(), m_Reg()));
+ EXPECT_TRUE(match);
+ match = mi_match(MIBAdd.getReg(0), MRI, m_OneUse(m_GAdd(m_Reg(), m_Reg())));
+ EXPECT_FALSE(match);
+}
} // namespace
int main(int argc, char **argv) {