}
return CE->getWithOperands(Ops, ValVTy->getElementType(), false,
Ops[0]->getType()->getPointerElementType());
+ } else if (CE->getOpcode() == Instruction::InsertElement) {
+ if (const auto *IEIdx = dyn_cast<ConstantInt>(CE->getOperand(2))) {
+ if (APSInt::isSameValue(APSInt(IEIdx->getValue()),
+ APSInt(CIdx->getValue()))) {
+ return CE->getOperand(1);
+ } else {
+ return ConstantExpr::getExtractElement(CE->getOperand(0), CIdx);
+ }
+ }
}
}
ret i32 %r
}
+define i32 @insert_extract_element_same_vec_idx_3() {
+; CHECK-LABEL: @insert_extract_element_same_vec_idx_3(
+; CHECK-NEXT: ret i32 1
+;
+ %r = extractelement <vscale x 4 x i32> insertelement (<vscale x 4 x i32> undef, i32 1, i64 4), i64 4
+ ret i32 %r
+}
+
+define i32 @insert_extract_element_same_vec_idx_4() {
+; CHECK-LABEL: @insert_extract_element_same_vec_idx_4(
+; CHECK-NEXT: ret i32 1
+;
+ %r = extractelement <vscale x 4 x i32> insertelement (<vscale x 4 x i32> insertelement (<vscale x 4 x i32> undef, i32 1, i32 4), i32 2, i64 3), i64 4
+ ret i32 %r
+}
+
; more complicated expressions
define <vscale x 2 x i1> @cmp_le_smax_always_true(<vscale x 2 x i64> %x) {