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[VectorCombine] add tests for gep load with cast; NFC

This commit is contained in:
Sanjay Patel 2020-12-17 12:03:55 -05:00
parent 2d07414ee5
commit 71a1b9fe76
1 changed files with 45 additions and 0 deletions
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45
llvm/test/Transforms/VectorCombine/X86/load.ll
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@ -299,6 +299,51 @@ define <8 x i16> @gep01_load_i16_insert_v8i16_deref_minalign(<8 x i16>* align 2
ret <8 x i16> %r
}
define <4 x i32> @gep01_bitcast_load_i32_insert_v4i32(<16 x i8>* align 1 dereferenceable(16) %p) {
; CHECK-LABEL: @gep01_bitcast_load_i32_insert_v4i32(
; CHECK-NEXT: [[GEP:%.*]] = getelementptr inbounds <16 x i8>, <16 x i8>* [[P:%.*]], i64 0, i64 1
; CHECK-NEXT: [[B:%.*]] = bitcast i8* [[GEP]] to i32*
; CHECK-NEXT: [[S:%.*]] = load i32, i32* [[B]], align 1
; CHECK-NEXT: [[R:%.*]] = insertelement <4 x i32> undef, i32 [[S]], i64 0
; CHECK-NEXT: ret <4 x i32> [[R]]
;
%gep = getelementptr inbounds <16 x i8>, <16 x i8>* %p, i64 0, i64 1
%b = bitcast i8* %gep to i32*
%s = load i32, i32* %b, align 1
%r = insertelement <4 x i32> undef, i32 %s, i64 0
ret <4 x i32> %r
}
define <4 x i32> @gep012_bitcast_load_i32_insert_v4i32(<16 x i8>* align 1 dereferenceable(20) %p) {
; CHECK-LABEL: @gep012_bitcast_load_i32_insert_v4i32(
; CHECK-NEXT: [[GEP:%.*]] = getelementptr inbounds <16 x i8>, <16 x i8>* [[P:%.*]], i64 0, i64 12
; CHECK-NEXT: [[B:%.*]] = bitcast i8* [[GEP]] to i32*
; CHECK-NEXT: [[S:%.*]] = load i32, i32* [[B]], align 1
; CHECK-NEXT: [[R:%.*]] = insertelement <4 x i32> undef, i32 [[S]], i64 0
; CHECK-NEXT: ret <4 x i32> [[R]]
;
%gep = getelementptr inbounds <16 x i8>, <16 x i8>* %p, i64 0, i64 12
%b = bitcast i8* %gep to i32*
%s = load i32, i32* %b, align 1
%r = insertelement <4 x i32> undef, i32 %s, i64 0
ret <4 x i32> %r
}
define <4 x i32> @gep013_bitcast_load_i32_insert_v4i32(<16 x i8>* align 1 dereferenceable(20) %p) {
; CHECK-LABEL: @gep013_bitcast_load_i32_insert_v4i32(
; CHECK-NEXT: [[GEP:%.*]] = getelementptr inbounds <16 x i8>, <16 x i8>* [[P:%.*]], i64 0, i64 13
; CHECK-NEXT: [[B:%.*]] = bitcast i8* [[GEP]] to i32*
; CHECK-NEXT: [[S:%.*]] = load i32, i32* [[B]], align 1
; CHECK-NEXT: [[R:%.*]] = insertelement <4 x i32> undef, i32 [[S]], i64 0
; CHECK-NEXT: ret <4 x i32> [[R]]
;
%gep = getelementptr inbounds <16 x i8>, <16 x i8>* %p, i64 0, i64 13
%b = bitcast i8* %gep to i32*
%s = load i32, i32* %b, align 1
%r = insertelement <4 x i32> undef, i32 %s, i64 0
ret <4 x i32> %r
}
; If there are enough dereferenceable bytes, we can offset the vector load.
define <8 x i16> @gep10_load_i16_insert_v8i16(<8 x i16>* align 16 dereferenceable(32) %p) {