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match a reassociated form of fnmul. This implements CodeGen/ARM/fnmul.ll
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@36660 91177308-0d34-0410-b5e6-96231b3b80d8
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@ -27,6 +27,7 @@
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#include "llvm/CodeGen/SelectionDAGISel.h"
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#include "llvm/CodeGen/SSARegMap.h"
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#include "llvm/Target/TargetLowering.h"
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#include "llvm/Target/TargetOptions.h"
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#include "llvm/Support/Debug.h"
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using namespace llvm;
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@ -139,8 +139,7 @@ def FMULD : ADI<(ops DPR:$dst, DPR:$a, DPR:$b),
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def FMULS : ASI<(ops SPR:$dst, SPR:$a, SPR:$b),
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"fmuls $dst, $a, $b",
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[(set SPR:$dst, (fmul SPR:$a, SPR:$b))]>;
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def FNMULD : ADI<(ops DPR:$dst, DPR:$a, DPR:$b),
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"fnmuld $dst, $a, $b",
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[(set DPR:$dst, (fneg (fmul DPR:$a, DPR:$b)))]>;
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@ -149,6 +148,13 @@ def FNMULS : ASI<(ops SPR:$dst, SPR:$a, SPR:$b),
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"fnmuls $dst, $a, $b",
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[(set SPR:$dst, (fneg (fmul SPR:$a, SPR:$b)))]>;
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// Match reassociated forms only if not sign dependent rounding.
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def : Pat<(fmul (fneg DPR:$a), DPR:$b),
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(FNMULD DPR:$a, DPR:$b)>, Requires<[NoHonorSignDependentRounding]>;
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def : Pat<(fmul (fneg SPR:$a), SPR:$b),
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(FNMULS SPR:$a, SPR:$b)>, Requires<[NoHonorSignDependentRounding]>;
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def FSUBD : ADI<(ops DPR:$dst, DPR:$a, DPR:$b),
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"fsubd $dst, $a, $b",
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[(set DPR:$dst, (fsub DPR:$a, DPR:$b))]>;
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