diff options
Diffstat (limited to 'llvm/lib/Target/AArch64')
| -rw-r--r-- | llvm/lib/Target/AArch64/AArch64InstrInfo.td | 21 |
1 files changed, 19 insertions, 2 deletions
diff --git a/llvm/lib/Target/AArch64/AArch64InstrInfo.td b/llvm/lib/Target/AArch64/AArch64InstrInfo.td index 541b7ce80e3..df234223be6 100644 --- a/llvm/lib/Target/AArch64/AArch64InstrInfo.td +++ b/llvm/lib/Target/AArch64/AArch64InstrInfo.td @@ -3315,20 +3315,37 @@ defm FNMSUB : ThreeOperandFPData<1, 1, "fnmsub", // N.b. FMSUB etc have the accumulator at the *end* of (outs), unlike // the NEON variant. + +// Here we handle first -(a + b*c) for FNMADD: + +let Predicates = [HasNEON, HasFullFP16] in +def : Pat<(f16 (fma (fneg FPR16:$Rn), FPR16:$Rm, FPR16:$Ra)), + (FMSUBHrrr FPR16:$Rn, FPR16:$Rm, FPR16:$Ra)>; + def : Pat<(f32 (fma (fneg FPR32:$Rn), FPR32:$Rm, FPR32:$Ra)), (FMSUBSrrr FPR32:$Rn, FPR32:$Rm, FPR32:$Ra)>; def : Pat<(f64 (fma (fneg FPR64:$Rn), FPR64:$Rm, FPR64:$Ra)), (FMSUBDrrr FPR64:$Rn, FPR64:$Rm, FPR64:$Ra)>; -// We handled -(a + b*c) for FNMADD above, now it's time for "(-a) + (-b)*c" and -// "(-a) + b*(-c)". +// Now it's time for "(-a) + (-b)*c" + +let Predicates = [HasNEON, HasFullFP16] in +def : Pat<(f16 (fma (fneg FPR16:$Rn), FPR16:$Rm, (fneg FPR16:$Ra))), + (FNMADDHrrr FPR16:$Rn, FPR16:$Rm, FPR16:$Ra)>; + def : Pat<(f32 (fma (fneg FPR32:$Rn), FPR32:$Rm, (fneg FPR32:$Ra))), (FNMADDSrrr FPR32:$Rn, FPR32:$Rm, FPR32:$Ra)>; def : Pat<(f64 (fma (fneg FPR64:$Rn), FPR64:$Rm, (fneg FPR64:$Ra))), (FNMADDDrrr FPR64:$Rn, FPR64:$Rm, FPR64:$Ra)>; +// And here "(-a) + b*(-c)" + +let Predicates = [HasNEON, HasFullFP16] in +def : Pat<(f16 (fma FPR16:$Rn, (fneg FPR16:$Rm), (fneg FPR16:$Ra))), + (FNMADDHrrr FPR16:$Rn, FPR16:$Rm, FPR16:$Ra)>; + def : Pat<(f32 (fma FPR32:$Rn, (fneg FPR32:$Rm), (fneg FPR32:$Ra))), (FNMADDSrrr FPR32:$Rn, FPR32:$Rm, FPR32:$Ra)>; |
