SDValue visitZERO_EXTEND_VECTOR_INREG(SDNode *N);
SDValue visitTRUNCATE(SDNode *N);
SDValue visitBITCAST(SDNode *N);
+ SDValue visitFREEZE(SDNode *N);
SDValue visitBUILD_PAIR(SDNode *N);
SDValue visitFADD(SDNode *N);
SDValue visitFSUB(SDNode *N);
case ISD::LIFETIME_END: return visitLIFETIME_END(N);
case ISD::FP_TO_FP16: return visitFP_TO_FP16(N);
case ISD::FP16_TO_FP: return visitFP16_TO_FP(N);
+ case ISD::FREEZE: return visitFREEZE(N);
case ISD::VECREDUCE_FADD:
case ISD::VECREDUCE_FMUL:
case ISD::VECREDUCE_ADD:
return CombineConsecutiveLoads(N, VT);
}
+SDValue DAGCombiner::visitFREEZE(SDNode *N) {
+ SDValue N0 = N->getOperand(0);
+
+ // (freeze (freeze x)) -> (freeze x)
+ if (N0.getOpcode() == ISD::FREEZE)
+ return N0;
+
+ // If the input is a constant, return it.
+ if (isa<ConstantSDNode>(N0) || isa<ConstantFPSDNode>(N0))
+ return N0;
+
+ return SDValue();
+}
+
/// We know that BV is a build_vector node with Constant, ConstantFP or Undef
/// operands. DstEltVT indicates the destination element value type.
SDValue DAGCombiner::
define i64 @expand(i32 %x) {
; CHECK-LABEL: expand:
; CHECK: ## %bb.0:
-; CHECK-NEXT: movl $303174162, %eax ## imm = 0x12121212
-; CHECK-NEXT: movl $875836468, %ecx ## imm = 0x34343434
-; CHECK-NEXT: movl $1448498774, %edx ## imm = 0x56565656
-; CHECK-NEXT: xorl %eax, %edx
-; CHECK-NEXT: movl $2021161080, %eax ## imm = 0x78787878
-; CHECK-NEXT: xorl %ecx, %eax
+; CHECK-NEXT: movl $1280068684, %eax ## imm = 0x4C4C4C4C
+; CHECK-NEXT: movl $1145324612, %edx ## imm = 0x44444444
; CHECK-NEXT: retl
%y1 = freeze i64 1302123111658042420 ; 0x1212121234343434
%y2 = freeze i64 6221254864647256184 ; 0x5656565678787878
define <2 x i64> @expand_vec(i32 %x) nounwind {
; CHECK-LABEL: expand_vec:
; CHECK: ## %bb.0:
-; CHECK-NEXT: pushl %ebx
-; CHECK-NEXT: pushl %edi
-; CHECK-NEXT: pushl %esi
; CHECK-NEXT: movl {{[0-9]+}}(%esp), %eax
-; CHECK-NEXT: movl $16843009, %ecx ## imm = 0x1010101
-; CHECK-NEXT: movl $589505315, %edx ## imm = 0x23232323
-; CHECK-NEXT: movl $303174162, %esi ## imm = 0x12121212
-; CHECK-NEXT: movl $875836468, %edi ## imm = 0x34343434
-; CHECK-NEXT: movl $1162167621, %ebx ## imm = 0x45454545
-; CHECK-NEXT: xorl %ecx, %ebx
-; CHECK-NEXT: movl $1734829927, %ecx ## imm = 0x67676767
-; CHECK-NEXT: xorl %edx, %ecx
-; CHECK-NEXT: movl $1448498774, %edx ## imm = 0x56565656
-; CHECK-NEXT: xorl %esi, %edx
-; CHECK-NEXT: movl $2021161080, %esi ## imm = 0x78787878
-; CHECK-NEXT: xorl %edi, %esi
-; CHECK-NEXT: movl %ebx, 12(%eax)
-; CHECK-NEXT: movl %ecx, 8(%eax)
-; CHECK-NEXT: movl %edx, 4(%eax)
-; CHECK-NEXT: movl %esi, (%eax)
-; CHECK-NEXT: popl %esi
-; CHECK-NEXT: popl %edi
-; CHECK-NEXT: popl %ebx
+; CHECK-NEXT: movl $1145324612, 12(%eax) ## imm = 0x44444444
+; CHECK-NEXT: movl $1145324612, 8(%eax) ## imm = 0x44444444
+; CHECK-NEXT: movl $1145324612, 4(%eax) ## imm = 0x44444444
+; CHECK-NEXT: movl $1280068684, (%eax) ## imm = 0x4C4C4C4C
; CHECK-NEXT: retl $4
; <0x1212121234343434, 0x101010123232323>
%y1 = freeze <2 x i64> <i64 1302123111658042420, i64 72340173410738979>
define i10 @promote() {
; CHECK-LABEL: promote:
; CHECK: ## %bb.0:
-; CHECK-NEXT: movw $682, %cx ## imm = 0x2AA
-; CHECK-NEXT: movw $992, %ax ## imm = 0x3E0
-; CHECK-NEXT: addl %ecx, %eax
-; CHECK-NEXT: ## kill: def $ax killed $ax killed $eax
+; CHECK-NEXT: movw $650, %ax ## imm = 0x28A
; CHECK-NEXT: retl
%a = freeze i10 682
%b = freeze i10 992
define <2 x i10> @promote_vec() {
; CHECK-LABEL: promote_vec:
; CHECK: ## %bb.0:
-; CHECK-NEXT: movw $125, %ax
-; CHECK-NEXT: movw $682, %cx ## imm = 0x2AA
-; CHECK-NEXT: movw $393, %dx ## imm = 0x189
-; CHECK-NEXT: addl %eax, %edx
-; CHECK-NEXT: movw $992, %ax ## imm = 0x3E0
-; CHECK-NEXT: addl %ecx, %eax
-; CHECK-NEXT: ## kill: def $ax killed $ax killed $eax
-; CHECK-NEXT: ## kill: def $dx killed $dx killed $edx
+; CHECK-NEXT: movw $1674, %ax ## imm = 0x68A
+; CHECK-NEXT: movw $518, %dx ## imm = 0x206
; CHECK-NEXT: retl
%a = freeze <2 x i10> <i10 682, i10 125>
%b = freeze <2 x i10> <i10 992, i10 393>