From: Simon Pilgrim <llvm-dev@redking.me.uk>
Date: Thu, 12 Sep 2019 20:39:56 +0000 (+0000)
Subject: [X86] Move negateFMAOpcode helper earlier to help future patch. NFCI.
X-Git-Url: https://granicus.if.org/sourcecode?a=commitdiff_plain;h=de5a9d636bf2f5653548bc263ff664ec0ccd4266;p=llvm

[X86] Move negateFMAOpcode helper earlier to help future patch. NFCI.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@371770 91177308-0d34-0410-b5e6-96231b3b80d8
---

diff --git a/lib/Target/X86/X86ISelLowering.cpp b/lib/Target/X86/X86ISelLowering.cpp
index 5a274cb3e19..5726576c1f0 100644
--- a/lib/Target/X86/X86ISelLowering.cpp
+++ b/lib/Target/X86/X86ISelLowering.cpp
@@ -41818,6 +41818,38 @@ static SDValue isFNEG(SelectionDAG &DAG, SDNode *N) {
   return SDValue();
 }
 
+static unsigned negateFMAOpcode(unsigned Opcode, bool NegMul, bool NegAcc) {
+  if (NegMul) {
+    switch (Opcode) {
+    default: llvm_unreachable("Unexpected opcode");
+    case ISD::FMA:             Opcode = X86ISD::FNMADD;       break;
+    case X86ISD::FMADD_RND:    Opcode = X86ISD::FNMADD_RND;   break;
+    case X86ISD::FMSUB:        Opcode = X86ISD::FNMSUB;       break;
+    case X86ISD::FMSUB_RND:    Opcode = X86ISD::FNMSUB_RND;   break;
+    case X86ISD::FNMADD:       Opcode = ISD::FMA;             break;
+    case X86ISD::FNMADD_RND:   Opcode = X86ISD::FMADD_RND;    break;
+    case X86ISD::FNMSUB:       Opcode = X86ISD::FMSUB;        break;
+    case X86ISD::FNMSUB_RND:   Opcode = X86ISD::FMSUB_RND;    break;
+    }
+  }
+
+  if (NegAcc) {
+    switch (Opcode) {
+    default: llvm_unreachable("Unexpected opcode");
+    case ISD::FMA:             Opcode = X86ISD::FMSUB;        break;
+    case X86ISD::FMADD_RND:    Opcode = X86ISD::FMSUB_RND;    break;
+    case X86ISD::FMSUB:        Opcode = ISD::FMA;             break;
+    case X86ISD::FMSUB_RND:    Opcode = X86ISD::FMADD_RND;    break;
+    case X86ISD::FNMADD:       Opcode = X86ISD::FNMSUB;       break;
+    case X86ISD::FNMADD_RND:   Opcode = X86ISD::FNMSUB_RND;   break;
+    case X86ISD::FNMSUB:       Opcode = X86ISD::FNMADD;       break;
+    case X86ISD::FNMSUB_RND:   Opcode = X86ISD::FNMADD_RND;   break;
+    }
+  }
+
+  return Opcode;
+}
+
 /// Do target-specific dag combines on floating point negations.
 static SDValue combineFneg(SDNode *N, SelectionDAG &DAG,
                            const X86Subtarget &Subtarget) {
@@ -42798,38 +42830,6 @@ static SDValue combineSext(SDNode *N, SelectionDAG &DAG,
   return SDValue();
 }
 
-static unsigned negateFMAOpcode(unsigned Opcode, bool NegMul, bool NegAcc) {
-  if (NegMul) {
-    switch (Opcode) {
-    default: llvm_unreachable("Unexpected opcode");
-    case ISD::FMA:             Opcode = X86ISD::FNMADD;       break;
-    case X86ISD::FMADD_RND:    Opcode = X86ISD::FNMADD_RND;   break;
-    case X86ISD::FMSUB:        Opcode = X86ISD::FNMSUB;       break;
-    case X86ISD::FMSUB_RND:    Opcode = X86ISD::FNMSUB_RND;   break;
-    case X86ISD::FNMADD:       Opcode = ISD::FMA;             break;
-    case X86ISD::FNMADD_RND:   Opcode = X86ISD::FMADD_RND;    break;
-    case X86ISD::FNMSUB:       Opcode = X86ISD::FMSUB;        break;
-    case X86ISD::FNMSUB_RND:   Opcode = X86ISD::FMSUB_RND;    break;
-    }
-  }
-
-  if (NegAcc) {
-    switch (Opcode) {
-    default: llvm_unreachable("Unexpected opcode");
-    case ISD::FMA:             Opcode = X86ISD::FMSUB;        break;
-    case X86ISD::FMADD_RND:    Opcode = X86ISD::FMSUB_RND;    break;
-    case X86ISD::FMSUB:        Opcode = ISD::FMA;             break;
-    case X86ISD::FMSUB_RND:    Opcode = X86ISD::FMADD_RND;    break;
-    case X86ISD::FNMADD:       Opcode = X86ISD::FNMSUB;       break;
-    case X86ISD::FNMADD_RND:   Opcode = X86ISD::FNMSUB_RND;   break;
-    case X86ISD::FNMSUB:       Opcode = X86ISD::FNMADD;       break;
-    case X86ISD::FNMSUB_RND:   Opcode = X86ISD::FNMADD_RND;   break;
-    }
-  }
-
-  return Opcode;
-}
-
 static SDValue combineFMA(SDNode *N, SelectionDAG &DAG,
                           const X86Subtarget &Subtarget) {
   SDLoc dl(N);