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) {
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);