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author | Reed Kotler <rkotler@mips.com> | 2014-06-10 16:45:44 +0000 |
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committer | Reed Kotler <rkotler@mips.com> | 2014-06-10 16:45:44 +0000 |
commit | 805c9e4943cdb6ee47f6c24622439ea222195f40 (patch) | |
tree | b9bfffcfe3fa0561b6385d054fb949efebb516e7 | |
parent | c0edcf7de8ebddf4524e8d6fa5805ab96dd5a99e (diff) | |
download | llvm-805c9e4943cdb6ee47f6c24622439ea222195f40.tar.gz llvm-805c9e4943cdb6ee47f6c24622439ea222195f40.tar.bz2 llvm-805c9e4943cdb6ee47f6c24622439ea222195f40.tar.xz |
Do Materialize Floating Point in Mips Fast-Isel
Summary:
Implement materialize of floating point literals in Mips Fast-Isel
Reopened version of D3659
Test Plan: simplestorefp1.ll
Reviewers: dsanders
Reviewed By: dsanders
Differential Revision: http://reviews.llvm.org/D4071
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@210546 91177308-0d34-0410-b5e6-96231b3b80d8
-rw-r--r-- | lib/Target/Mips/MipsFastISel.cpp | 25 | ||||
-rw-r--r-- | test/CodeGen/Mips/Fast-ISel/simplestorefp1.ll | 38 |
2 files changed, 61 insertions, 2 deletions
diff --git a/lib/Target/Mips/MipsFastISel.cpp b/lib/Target/Mips/MipsFastISel.cpp index 448698e2de..9a60aa7b9f 100644 --- a/lib/Target/Mips/MipsFastISel.cpp +++ b/lib/Target/Mips/MipsFastISel.cpp @@ -167,9 +167,14 @@ bool MipsFastISel::EmitStore(MVT VT, unsigned SrcReg, Address &Addr, // // more cases will be handled here in following patches. // - if (VT != MVT::i32) + if (VT == MVT::i32) + EmitInstStore(Mips::SW, SrcReg, Addr.Base.Reg, Addr.Offset); + else if (VT == MVT::f32) + EmitInstStore(Mips::SWC1, SrcReg, Addr.Base.Reg, Addr.Offset); + else if (VT == MVT::f64) + EmitInstStore(Mips::SDC1, SrcReg, Addr.Base.Reg, Addr.Offset); + else return false; - EmitInstStore(Mips::SW, SrcReg, Addr.Base.Reg, Addr.Offset); return true; } @@ -229,6 +234,22 @@ bool MipsFastISel::TargetSelectInstruction(const Instruction *I) { } unsigned MipsFastISel::MaterializeFP(const ConstantFP *CFP, MVT VT) { + int64_t Imm = CFP->getValueAPF().bitcastToAPInt().getZExtValue(); + if (VT == MVT::f32) { + const TargetRegisterClass *RC = &Mips::FGR32RegClass; + unsigned DestReg = createResultReg(RC); + unsigned TempReg = Materialize32BitInt(Imm, &Mips::GPR32RegClass); + EmitInst(Mips::MTC1, DestReg).addReg(TempReg); + return DestReg; + } else if (VT == MVT::f64) { + const TargetRegisterClass *RC = &Mips::AFGR64RegClass; + unsigned DestReg = createResultReg(RC); + unsigned TempReg1 = Materialize32BitInt(Imm >> 32, &Mips::GPR32RegClass); + unsigned TempReg2 = + Materialize32BitInt(Imm & 0xFFFFFFFF, &Mips::GPR32RegClass); + EmitInst(Mips::BuildPairF64, DestReg).addReg(TempReg2).addReg(TempReg1); + return DestReg; + } return 0; } diff --git a/test/CodeGen/Mips/Fast-ISel/simplestorefp1.ll b/test/CodeGen/Mips/Fast-ISel/simplestorefp1.ll new file mode 100644 index 0000000000..a374470d89 --- /dev/null +++ b/test/CodeGen/Mips/Fast-ISel/simplestorefp1.ll @@ -0,0 +1,38 @@ +; RUN: llc -march=mipsel -relocation-model=pic -O0 -mips-fast-isel -fast-isel-abort -mcpu=mips32r2 \ +; RUN: < %s | FileCheck %s + +@f = common global float 0.000000e+00, align 4 +@de = common global double 0.000000e+00, align 8 + +; Function Attrs: nounwind +define void @f1() #0 { +entry: + store float 0x3FFA76C8C0000000, float* @f, align 4 + ret void +; CHECK: .ent f1 +; CHECK: lui $[[REG1:[0-9]+]], 16339 +; CHECK: ori $[[REG2:[0-9]+]], $[[REG1]], 46662 +; CHECK: mtc1 $[[REG2]], $f[[REG3:[0-9]+]] +; CHECK: lw $[[REG4:[0-9]+]], %got(f)(${{[0-9]+}}) +; CHECK: swc1 $f[[REG3]], 0($[[REG4]]) +; CHECK: .end f1 + +} + +; Function Attrs: nounwind +define void @d1() #0 { +entry: + store double 1.234567e+00, double* @de, align 8 +; CHECK: .ent d1 +; CHECK: lui $[[REG1a:[0-9]+]], 16371 +; CHECK: ori $[[REG2a:[0-9]+]], $[[REG1a]], 49353 +; CHECK: lui $[[REG1b:[0-9]+]], 21403 +; CHECK: ori $[[REG2b:[0-9]+]], $[[REG1b]], 34951 +; CHECK: mtc1 $[[REG2b]], $f[[REG3b:[0-9]+]] +; CHECK: mtc1 $[[REG2a]], $f[[REG3a:[0-9]+]] +; CHECK: sdc1 $f[[REG3b]], 0(${{[0-9]+}}) +; CHECK: .end d1 + ret void +} + +attributes #0 = { nounwind "less-precise-fpmad"="false" "no-frame-pointer-elim"="true" "no-frame-pointer-elim-non-leaf" "no-infs-fp-math"="false" "no-nans-fp-math"="false" "stack-protector-buffer-size"="8" "unsafe-fp-math"="false" "use-soft-float"="false" } |