diff options
| -rw-r--r-- | lib/Target/Mips/MipsSEInstrInfo.h | 12 | ||||
| -rw-r--r-- | test/CodeGen/Mips/int-to-float-conversion.ll | 48 |
2 files changed, 60 insertions, 0 deletions
diff --git a/lib/Target/Mips/MipsSEInstrInfo.h b/lib/Target/Mips/MipsSEInstrInfo.h index f4c29b1..e44ff42 100644 --- a/lib/Target/Mips/MipsSEInstrInfo.h +++ b/lib/Target/Mips/MipsSEInstrInfo.h @@ -83,9 +83,21 @@ private: void expandRetRA(MachineBasicBlock &MBB, MachineBasicBlock::iterator I, unsigned Opc) const; + + /// Expand pseudo Int-to-FP conversion instructions. + /// + /// For example, the following pseudo instruction + /// PseudoCVT_D32_W D2, A5 + /// gets expanded into these two instructions: + /// MTC1 F4, A5 + /// CVT_D32_W D2, F4 + /// + /// We do this expansion post-RA to avoid inserting a floating point copy + /// instruction between MTC1 and CVT_D32_W. void expandCvtFPInt(MachineBasicBlock &MBB, MachineBasicBlock::iterator I, unsigned CvtOpc, unsigned MovOpc, bool DstIsLarger, bool SrcIsLarger, bool IsI64) const; + void expandExtractElementF64(MachineBasicBlock &MBB, MachineBasicBlock::iterator I) const; void expandBuildPairF64(MachineBasicBlock &MBB, diff --git a/test/CodeGen/Mips/int-to-float-conversion.ll b/test/CodeGen/Mips/int-to-float-conversion.ll new file mode 100644 index 0000000..2a7dfdd --- /dev/null +++ b/test/CodeGen/Mips/int-to-float-conversion.ll @@ -0,0 +1,48 @@ +; RUN: llc -march=mipsel < %s | FileCheck %s -check-prefix=32 +; RUN: llc -march=mips64el -mcpu=mips64 < %s | FileCheck %s -check-prefix=64 + +@i1 = global [3 x i32] [i32 1, i32 2, i32 3], align 4 +@i3 = common global i32* null, align 4 + +; 32: test_float_int_: +; 32: mtc1 ${{[0-9]+}}, $f[[R0:[0-9]+]] +; 32: cvt.s.w $f{{[0-9]+}}, $f[[R0]] + +define float @test_float_int_(i32 %a) { +entry: + %conv = sitofp i32 %a to float + ret float %conv +} + +; 32: test_double_int_: +; 32: mtc1 ${{[0-9]+}}, $f[[R0:[0-9]+]] +; 32: cvt.d.w $f{{[0-9]+}}, $f[[R0]] +; 64: test_double_int_: +; 64: mtc1 ${{[0-9]+}}, $f[[R0:[0-9]+]] +; 64: cvt.d.w $f{{[0-9]+}}, $f[[R0]] + +define double @test_double_int_(i32 %a) { +entry: + %conv = sitofp i32 %a to double + ret double %conv +} + +; 64: test_float_LL_: +; 64: dmtc1 ${{[0-9]+}}, $f[[R0:[0-9]+]] +; 64: cvt.s.l $f{{[0-9]+}}, $f[[R0]] + +define float @test_float_LL_(i64 %a) { +entry: + %conv = sitofp i64 %a to float + ret float %conv +} + +; 64: test_double_LL_: +; 64: dmtc1 ${{[0-9]+}}, $f[[R0:[0-9]+]] +; 64: cvt.d.l $f{{[0-9]+}}, $f[[R0]] + +define double @test_double_LL_(i64 %a) { +entry: + %conv = sitofp i64 %a to double + ret double %conv +} |