VectorTy =
largestIntegerVectorType(ToVectorTy(I->getType(), VF), MinVecTy);
} else if (Opcode == Instruction::ZExt || Opcode == Instruction::SExt) {
- SrcVecTy = largestIntegerVectorType(SrcVecTy, MinVecTy);
+ // Leave SrcVecTy unchanged - we only shrink the destination element
+ // type.
VectorTy =
smallestIntegerVectorType(ToVectorTy(I->getType(), VF), MinVecTy);
}
; CHECK-COST: LV: Found an estimated cost of 1 for VF vscale x 1 For instruction: %conv = zext i8 %0 to i32
; CHECK-COST: LV: Found an estimated cost of 1 for VF vscale x 2 For instruction: %conv = zext i8 %0 to i32
; CHECK-COST: LV: Found an estimated cost of 1 for VF vscale x 4 For instruction: %conv = zext i8 %0 to i32
-; CHECK-COST: LV: Found an estimated cost of 1 for VF vscale x 8 For instruction: %conv = zext i8 %0 to i32
+; CHECK-COST: LV: Found an estimated cost of 0 for VF vscale x 8 For instruction: %conv = zext i8 %0 to i32
+
; CHECK-LABEL: define void @zext_i8_i16
; CHECK-SAME: (ptr noalias nocapture readonly [[P:%.*]], ptr noalias nocapture [[Q:%.*]], i32 [[LEN:%.*]]) #[[ATTR0:[0-9]+]] {
; CHECK-NEXT: entry:
; CHECK-COST: LV: Found an estimated cost of 1 for VF vscale x 1 For instruction: %conv = sext i8 %0 to i32
; CHECK-COST: LV: Found an estimated cost of 1 for VF vscale x 2 For instruction: %conv = sext i8 %0 to i32
; CHECK-COST: LV: Found an estimated cost of 1 for VF vscale x 4 For instruction: %conv = sext i8 %0 to i32
-; CHECK-COST: LV: Found an estimated cost of 1 for VF vscale x 8 For instruction: %conv = sext i8 %0 to i32
+; CHECK-COST: LV: Found an estimated cost of 0 for VF vscale x 8 For instruction: %conv = sext i8 %0 to i32
+
; CHECK-LABEL: define void @sext_i8_i16
; CHECK-SAME: (ptr noalias nocapture readonly [[P:%.*]], ptr noalias nocapture [[Q:%.*]], i32 [[LEN:%.*]]) #[[ATTR0]] {
; CHECK-NEXT: entry: