From: Zoran Jovanovic Date: Fri, 2 Oct 2015 13:06:02 +0000 (+0000) Subject: [mips][microMIPS] Fix an issue with selecting sqrt instruction in LLVM backend X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=45996bbe27517137ae16841e643de8c23843359a;p=oota-llvm.git [mips][microMIPS] Fix an issue with selecting sqrt instruction in LLVM backend Differential Revision: http://reviews.llvm.org/D13235 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@249123 91177308-0d34-0410-b5e6-96231b3b80d8 --- diff --git a/lib/Target/Mips/MipsInstrFPU.td b/lib/Target/Mips/MipsInstrFPU.td index 9b9d5f6cc2e..d1a72494433 100644 --- a/lib/Target/Mips/MipsInstrFPU.td +++ b/lib/Target/Mips/MipsInstrFPU.td @@ -353,11 +353,8 @@ def FNEG_S : MMRel, ABSS_FT<"neg.s", FGR32Opnd, FGR32Opnd, II_NEG, fneg>, defm FABS : ABSS_M<"abs.d", II_ABS, fabs>, ABSS_FM<0x5, 17>; defm FNEG : ABSS_M<"neg.d", II_NEG, fneg>, ABSS_FM<0x7, 17>; -let AdditionalPredicates = [NotInMicroMips] in { -def FSQRT_S : MMRel, ABSS_FT<"sqrt.s", FGR32Opnd, FGR32Opnd, II_SQRT_S, fsqrt>, - ABSS_FM<0x4, 16>, ISA_MIPS2; -} - +def FSQRT_S : MMRel, StdMMR6Rel, ABSS_FT<"sqrt.s", FGR32Opnd, FGR32Opnd, + II_SQRT_S, fsqrt>, ABSS_FM<0x4, 16>, ISA_MIPS2; defm FSQRT : ABSS_M<"sqrt.d", II_SQRT_D, fsqrt>, ABSS_FM<0x4, 17>, ISA_MIPS2; // The odd-numbered registers are only referenced when doing loads, diff --git a/test/CodeGen/Mips/llvm-ir/sqrt.ll b/test/CodeGen/Mips/llvm-ir/sqrt.ll new file mode 100644 index 00000000000..1a8892de0ee --- /dev/null +++ b/test/CodeGen/Mips/llvm-ir/sqrt.ll @@ -0,0 +1,13 @@ +; RUN: llc < %s -march=mipsel -mcpu=mips32r2 -mattr=+micromips | FileCheck %s +; RUN: llc < %s -march=mips -mcpu=mips32r2 -mattr=+micromips | FileCheck %s +; RUN: llc < %s -march=mips -mcpu=mips32r6 -mattr=+micromips | FileCheck %s + +define float @sqrt_fn(float %value) #0 { +entry: + %sqrtf = tail call float @sqrtf(float %value) #0 + ret float %sqrtf +} + +declare float @sqrtf(float) + +; CHECK: sqrt.s $f0, $f12