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GlobalISel: Add some FP instructions to MachineIRBuilder

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This makes FP legalization code more convenient.

llvm-svn: 360852
This commit is contained in:
Matt Arsenault 2019-05-16 04:08:55 +00:00
parent fd2428f698
commit acf98dc474
2 changed files with 56 additions and 0 deletions
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28
include/llvm/CodeGen/GlobalISel/MachineIRBuilder.h
View File

@ -1239,6 +1239,34 @@ public:
return buildInstr(TargetOpcode::G_OR, {Dst}, {Src0, Src1});
}
/// Build and insert \p Res = G_FADD \p Op0, \p Op1
MachineInstrBuilder buildFAdd(const DstOp &Dst, const SrcOp &Src0,
const SrcOp &Src1) {
return buildInstr(TargetOpcode::G_FADD, {Dst}, {Src0, Src1});
}
/// Build and insert \p Res = G_FSUB \p Op0, \p Op1
MachineInstrBuilder buildFSub(const DstOp &Dst, const SrcOp &Src0,
const SrcOp &Src1) {
return buildInstr(TargetOpcode::G_FSUB, {Dst}, {Src0, Src1});
}
/// Build and insert \p Res = G_FNEG \p Op0
MachineInstrBuilder buildFNeg(const DstOp &Dst, const SrcOp &Src0) {
return buildInstr(TargetOpcode::G_FNEG, {Dst}, {Src0});
}
/// Build and insert \p Res = G_FABS \p Op0
MachineInstrBuilder buildFAbs(const DstOp &Dst, const SrcOp &Src0) {
return buildInstr(TargetOpcode::G_FABS, {Dst}, {Src0});
}
/// Build and insert \p Res = G_FCOPYSIGN \p Op0, \p Op1
MachineInstrBuilder buildFCopysign(const DstOp &Dst, const SrcOp &Src0,
const SrcOp &Src1) {
return buildInstr(TargetOpcode::G_FCOPYSIGN, {Dst}, {Src0, Src1});
}
virtual MachineInstrBuilder buildInstr(unsigned Opc, ArrayRef<DstOp> DstOps,
ArrayRef<SrcOp> SrcOps,
Optional<unsigned> Flags = None);

28
unittests/CodeGen/GlobalISel/MachineIRBuilderTest.cpp
View File

@ -110,3 +110,31 @@ TEST_F(GISelMITest, BuildUnmerge) {
EXPECT_TRUE(CheckMachineFunction(*MF, CheckStr)) << *MF;
}
TEST_F(GISelMITest, TestBuildFPInsts) {
if (!TM)
return;
SmallVector<unsigned, 4> Copies;
collectCopies(Copies, MF);
LLT S64 = LLT::scalar(64);
B.buildFAdd(S64, Copies[0], Copies[1]);
B.buildFSub(S64, Copies[0], Copies[1]);
B.buildFNeg(S64, Copies[0]);
B.buildFAbs(S64, Copies[0]);
B.buildFCopysign(S64, Copies[0], Copies[1]);
auto CheckStr = R"(
; CHECK: [[COPY0:%[0-9]+]]:_(s64) = COPY $x0
; CHECK: [[COPY1:%[0-9]+]]:_(s64) = COPY $x1
; CHECK: [[FADD:%[0-9]+]]:_(s64) = G_FADD [[COPY0]]:_, [[COPY1]]:_
; CHECK: [[FSUB:%[0-9]+]]:_(s64) = G_FSUB [[COPY0]]:_, [[COPY1]]:_
; CHECK: [[FNEG:%[0-9]+]]:_(s64) = G_FNEG [[COPY0]]:_
; CHECK: [[FABS:%[0-9]+]]:_(s64) = G_FABS [[COPY0]]:_
; CHECK: [[FCOPYSIGN:%[0-9]+]]:_(s64) = G_FCOPYSIGN [[COPY0]]:_, [[COPY1]]:_
)";
EXPECT_TRUE(CheckMachineFunction(*MF, CheckStr)) << *MF;
}