// condition may inhibit other folds and lead to worse codegen.
auto *Cmp = dyn_cast<CmpInst>(Sel->getCondition());
if (!Cmp || Cmp->getOperand(0)->getType() != Sel->getType())
- if (Instruction *NV = FoldOpIntoSelect(CI, Sel))
+ if (Instruction *NV = FoldOpIntoSelect(CI, Sel)) {
+ replaceAllDbgUsesWith(*Sel, *NV, CI, DT);
return NV;
+ }
}
// If we are casting a PHI, then fold the cast into the PHI.
ret i64 %c2
}
+define i32 @test_cast_select(i1 %cond) {
+; CHECK-LABEL: @test_cast_select(
+; CHECK-NEXT: [[sel:%.*]] = select i1 %cond, i32 3, i32 5
+; CHECK-NEXT: call void @llvm.dbg.value(metadata i32 [[sel]], {{.*}}, metadata !DIExpression())
+; CHECK-NEXT: call void @llvm.dbg.value(metadata i32 [[sel]], {{.*}}, metadata !DIExpression())
+; CHECK-NEXT: ret i32 [[sel]]
+ %sel = select i1 %cond, i16 3, i16 5
+ %cast = zext i16 %sel to i32
+ ret i32 %cast
+}
+
define void @test_or(i64 %A) {
; CHECK-LABEL: @test_or(
; CHECK-NEXT: call void @llvm.dbg.value(metadata i64 %A, {{.*}}, metadata !DIExpression(DW_OP_constu, 256, DW_OP_or, DW_OP_stack_value))