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AArch64/ARM64: add patterns for various commutations of FNMADD.

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@206287 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Tim Northover 2014-04-15 14:00:06 +00:00
parent e8bc8a7d58
commit e9cae9b79f
2 changed files with 16 additions and 0 deletions
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14
lib/Target/ARM64/ARM64InstrInfo.td
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@ -2033,6 +2033,20 @@ def : Pat<(f32 (fma (fneg FPR32:$Rn), FPR32:$Rm, FPR32:$Ra)),
def : Pat<(f64 (fma (fneg FPR64:$Rn), FPR64:$Rm, FPR64:$Ra)),
(FMSUBDrrr FPR64:$Rn, FPR64:$Rm, FPR64:$Ra)>;
// We handled -(a + b*c) for FNMADD above, now it's time for "(-a) + (-b)*c" and
// "(-a) + b*(-c)".
def : Pat<(f32 (fma (fneg FPR32:$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:$Ra)>;
def : Pat<(f32 (fma FPR32:$Rn, (fneg FPR32:$Rm), (fneg FPR32:$Ra))),
(FNMADDSrrr FPR32:$Rn, FPR32:$Rm, FPR32:$Ra)>;
def : Pat<(f64 (fma FPR64:$Rn, (fneg FPR64:$Rm), (fneg FPR64:$Ra))),
(FNMADDDrrr FPR64:$Rn, FPR64:$Rm, FPR64:$Ra)>;
//===----------------------------------------------------------------------===//
// Floating point comparison instructions.
//===----------------------------------------------------------------------===//

2
test/CodeGen/AArch64/fp-dp3.ll
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@ -1,5 +1,7 @@
; RUN: llc -verify-machineinstrs < %s -mtriple=aarch64-none-linux-gnu -fp-contract=fast | FileCheck %s
; RUN: llc -verify-machineinstrs < %s -mtriple=aarch64-none-linux-gnu | FileCheck %s -check-prefix=CHECK-NOFAST
; RUN: llc -verify-machineinstrs -o - %s -mtriple=arm64-none-linux-gnu -fp-contract=fast | FileCheck %s
; RUN: llc -verify-machineinstrs -o - %s -mtriple=arm64-apple-ios7.0 | FileCheck %s -check-prefix=CHECK-NOFAST
declare float @llvm.fma.f32(float, float, float)
declare double @llvm.fma.f64(double, double, double)