shylie/llvm-project
1
0
Fork 0
Code Issues Pull Requests Actions 6 Packages Projects Releases Wiki Activity

[InstCombine] add splat tests with undef elements; NFC

Browse Source
This commit is contained in:
Sanjay Patel 2020-02-04 07:59:12 -05:00
parent 0cf0be993c
commit 5d04e008f7
1 changed files with 28 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

28
llvm/test/Transforms/InstCombine/vec_shuffle.ll
View File

@ -1468,6 +1468,19 @@ define <4 x i32> @splat_assoc_add(<4 x i32> %x, <4 x i32> %y) {
ret <4 x i32> %r
}
define <4 x i32> @splat_assoc_add_undef_constant_elts(<4 x i32> %x, <4 x i32> %y) {
; CHECK-LABEL: @splat_assoc_add_undef_constant_elts(
; CHECK-NEXT: [[SPLATX:%.*]] = shufflevector <4 x i32> [[X:%.*]], <4 x i32> undef, <4 x i32> zeroinitializer
; CHECK-NEXT: [[A:%.*]] = add <4 x i32> [[Y:%.*]], <i32 undef, i32 42, i32 undef, i32 42>
; CHECK-NEXT: [[R:%.*]] = add <4 x i32> [[SPLATX]], [[A]]
; CHECK-NEXT: ret <4 x i32> [[R]]
;
%splatx = shufflevector <4 x i32> %x, <4 x i32> undef, <4 x i32> zeroinitializer
%a = add <4 x i32> %y, <i32 undef, i32 42, i32 undef, i32 42>
%r = add <4 x i32> %splatx, %a
ret <4 x i32> %r
}
; Non-zero splat index; commute operands; FMF intersect
define <2 x float> @splat_assoc_fmul(<2 x float> %x, <2 x float> %y) {
@ -1499,6 +1512,21 @@ define <3 x i8> @splat_assoc_mul(<3 x i8> %x, <3 x i8> %y, <3 x i8> %z) {
ret <3 x i8> %r
}
define <3 x i8> @splat_assoc_mul_undef_elts(<3 x i8> %x, <3 x i8> %y, <3 x i8> %z) {
; CHECK-LABEL: @splat_assoc_mul_undef_elts(
; CHECK-NEXT: [[SPLATX:%.*]] = shufflevector <3 x i8> [[X:%.*]], <3 x i8> undef, <3 x i32> <i32 2, i32 undef, i32 2>
; CHECK-NEXT: [[SPLATZ:%.*]] = shufflevector <3 x i8> [[Z:%.*]], <3 x i8> undef, <3 x i32> <i32 2, i32 2, i32 undef>
; CHECK-NEXT: [[A:%.*]] = mul nsw <3 x i8> [[SPLATZ]], [[Y:%.*]]
; CHECK-NEXT: [[R:%.*]] = mul nuw nsw <3 x i8> [[A]], [[SPLATX]]
; CHECK-NEXT: ret <3 x i8> [[R]]
;
%splatx = shufflevector <3 x i8> %x, <3 x i8> undef, <3 x i32> <i32 2, i32 undef, i32 2>
%splatz = shufflevector <3 x i8> %z, <3 x i8> undef, <3 x i32> <i32 2, i32 2, i32 undef>
%a = mul nsw <3 x i8> %y, %splatz
%r = mul nsw nuw <3 x i8> %a, %splatx
ret <3 x i8> %r
}
; Negative test - mismatched splat elements
define <3 x i8> @splat_assoc_or(<3 x i8> %x, <3 x i8> %y, <3 x i8> %z) {