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[InstCombine] add/adjust tests for min/max intrinsics; NFC 

If we transform these, we have to propagate no-wrap/undef carefully.
This commit is contained in:
Sanjay Patel 2021-09-19 09:18:07 -04:00
parent 1da52ef294
commit 9555d1edb0
1 changed files with 17 additions and 6 deletions
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23
llvm/test/Transforms/InstCombine/minmax-intrinsics.ll
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@ -1924,11 +1924,11 @@ define i8 @smax_offset_uses(i8 %x) {
define <3 x i8> @smin_offset(<3 x i8> %x) {
; CHECK-LABEL: @smin_offset(
; CHECK-NEXT: [[A:%.*]] = add nsw <3 x i8> [[X:%.*]], <i8 124, i8 124, i8 124>
; CHECK-NEXT: [[A:%.*]] = add nuw nsw <3 x i8> [[X:%.*]], <i8 124, i8 124, i8 124>
; CHECK-NEXT: [[M:%.*]] = call <3 x i8> @llvm.smin.v3i8(<3 x i8> [[A]], <3 x i8> <i8 -3, i8 -3, i8 -3>)
; CHECK-NEXT: ret <3 x i8> [[M]]
;
%a = add nsw <3 x i8> %x, <i8 124, i8 124, i8 124>
%a = add nsw nuw <3 x i8> %x, <i8 124, i8 124, i8 124>
%m = call <3 x i8> @llvm.smin.v3i8(<3 x i8> %a, <3 x i8> <i8 -3, i8 -3, i8 -3>)
ret <3 x i8> %m
}
@ -1977,12 +1977,12 @@ define i8 @smin_offset_uses(i8 %x) {
define <3 x i8> @umax_offset(<3 x i8> %x) {
; CHECK-LABEL: @umax_offset(
; CHECK-NEXT: [[A:%.*]] = add nuw <3 x i8> [[X:%.*]], <i8 3, i8 3, i8 3>
; CHECK-NEXT: [[M:%.*]] = call <3 x i8> @llvm.umax.v3i8(<3 x i8> [[A]], <3 x i8> <i8 4, i8 4, i8 4>)
; CHECK-NEXT: [[A:%.*]] = add nuw nsw <3 x i8> [[X:%.*]], <i8 127, i8 127, i8 127>
; CHECK-NEXT: [[M:%.*]] = call <3 x i8> @llvm.umax.v3i8(<3 x i8> [[A]], <3 x i8> <i8 -126, i8 -126, i8 -126>)
; CHECK-NEXT: ret <3 x i8> [[M]]
;
%a = add nuw <3 x i8> %x, <i8 3, i8 3, i8 3>
%m = call <3 x i8> @llvm.umax.v3i8(<3 x i8> %a, <3 x i8> <i8 4, i8 4, i8 4>)
%a = add nsw nuw <3 x i8> %x, <i8 127, i8 127, i8 127>
%m = call <3 x i8> @llvm.umax.v3i8(<3 x i8> %a, <3 x i8> <i8 130, i8 130, i8 130>)
ret <3 x i8> %m
}
@ -2082,3 +2082,14 @@ define i8 @umin_offset_uses(i8 %x) {
%m = call i8 @llvm.umin.i8(i8 %a, i8 252)
ret i8 %m
}
define <3 x i8> @umax_vector_splat_undef(<3 x i8> %x) {
; CHECK-LABEL: @umax_vector_splat_undef(
; CHECK-NEXT: [[A:%.*]] = add nuw <3 x i8> [[X:%.*]], <i8 undef, i8 64, i8 64>
; CHECK-NEXT: [[R:%.*]] = call <3 x i8> @llvm.umax.v3i8(<3 x i8> [[A]], <3 x i8> <i8 13, i8 -126, i8 -126>)
; CHECK-NEXT: ret <3 x i8> [[R]]
;
%a = add nuw <3 x i8> %x, <i8 undef, i8 64, i8 64>
%r = call <3 x i8> @llvm.umax.v3i8(<3 x i8> %a, <3 x i8> <i8 13, i8 130, i8 130>)
ret <3 x i8> %r
}