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llvm-project/llvm/test/Transforms/Scalarizer/vector-gep.ll
Paul Walker eae26b6640 [IRBuilder] Use canonical i64 type for insertelement index used by vector splats. 
Instcombine prefers this canonical form (see getPreferredVectorIndex),
as does IRBuilder when passing the index as an integer so we may as
well use the prefered form from creation.

NOTE: All test changes are mechanical with nothing else expected
beyond a change of index type from i32 to i64.

Differential Revision: https://reviews.llvm.org/D140983
2023-01-11 14:08:06 +00:00

171 lines
8.1 KiB
LLVM
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; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
; RUN: opt -S -passes='function(scalarizer)' %s | FileCheck %s
; Check that the scalarizer can handle vector GEPs with scalar indices
@vec = global <4 x ptr> <ptr null, ptr null, ptr null, ptr null>
@index = global i16 1
@ptr = global [4 x i16] [i16 1, i16 2, i16 3, i16 4]
@ptrptr = global ptr null
; constant index
define void @test1() {
; CHECK-LABEL: @test1(
; CHECK-NEXT: bb:
; CHECK-NEXT: [[TMP0:%.*]] = load <4 x ptr>, ptr @vec, align 32
; CHECK-NEXT: [[DOTI0:%.*]] = extractelement <4 x ptr> [[TMP0]], i32 0
; CHECK-NEXT: [[DOTI01:%.*]] = getelementptr i16, ptr [[DOTI0]], i16 1
; CHECK-NEXT: [[DOTI1:%.*]] = extractelement <4 x ptr> [[TMP0]], i32 1
; CHECK-NEXT: [[DOTI12:%.*]] = getelementptr i16, ptr [[DOTI1]], i16 1
; CHECK-NEXT: [[DOTI2:%.*]] = extractelement <4 x ptr> [[TMP0]], i32 2
; CHECK-NEXT: [[DOTI23:%.*]] = getelementptr i16, ptr [[DOTI2]], i16 1
; CHECK-NEXT: [[DOTI3:%.*]] = extractelement <4 x ptr> [[TMP0]], i32 3
; CHECK-NEXT: [[DOTI34:%.*]] = getelementptr i16, ptr [[DOTI3]], i16 1
; CHECK-NEXT: ret void
;
bb:
%0 = load <4 x ptr>, ptr @vec
%1 = getelementptr i16, <4 x ptr> %0, i16 1
ret void
}
; non-constant index
define void @test2() {
; CHECK-LABEL: @test2(
; CHECK-NEXT: bb:
; CHECK-NEXT: [[TMP0:%.*]] = load <4 x ptr>, ptr @vec, align 32
; CHECK-NEXT: [[DOTI0:%.*]] = extractelement <4 x ptr> [[TMP0]], i32 0
; CHECK-NEXT: [[DOTI1:%.*]] = extractelement <4 x ptr> [[TMP0]], i32 1
; CHECK-NEXT: [[DOTI2:%.*]] = extractelement <4 x ptr> [[TMP0]], i32 2
; CHECK-NEXT: [[DOTI3:%.*]] = extractelement <4 x ptr> [[TMP0]], i32 3
; CHECK-NEXT: [[INDEX:%.*]] = load i16, ptr @index, align 2
; CHECK-NEXT: [[DOTSPLATINSERT:%.*]] = insertelement <4 x i16> poison, i16 [[INDEX]], i64 0
; CHECK-NEXT: [[DOTSPLAT:%.*]] = shufflevector <4 x i16> [[DOTSPLATINSERT]], <4 x i16> poison, <4 x i32> zeroinitializer
; CHECK-NEXT: [[DOTSPLAT_I0:%.*]] = extractelement <4 x i16> [[DOTSPLAT]], i32 0
; CHECK-NEXT: [[DOTI01:%.*]] = getelementptr i16, ptr [[DOTI0]], i16 [[DOTSPLAT_I0]]
; CHECK-NEXT: [[DOTSPLAT_I1:%.*]] = extractelement <4 x i16> [[DOTSPLAT]], i32 1
; CHECK-NEXT: [[DOTI12:%.*]] = getelementptr i16, ptr [[DOTI1]], i16 [[DOTSPLAT_I1]]
; CHECK-NEXT: [[DOTSPLAT_I2:%.*]] = extractelement <4 x i16> [[DOTSPLAT]], i32 2
; CHECK-NEXT: [[DOTI23:%.*]] = getelementptr i16, ptr [[DOTI2]], i16 [[DOTSPLAT_I2]]
; CHECK-NEXT: [[DOTSPLAT_I3:%.*]] = extractelement <4 x i16> [[DOTSPLAT]], i32 3
; CHECK-NEXT: [[DOTI34:%.*]] = getelementptr i16, ptr [[DOTI3]], i16 [[DOTSPLAT_I3]]
; CHECK-NEXT: ret void
;
bb:
%0 = load <4 x ptr>, ptr @vec
%index = load i16, ptr @index
%1 = getelementptr i16, <4 x ptr> %0, i16 %index
ret void
}
; Check that the scalarizer can handle vector GEPs with scalar pointer
; constant pointer
define <4 x ptr> @test3_constexpr() {
; CHECK-LABEL: @test3_constexpr(
; CHECK-NEXT: bb:
; CHECK-NEXT: ret <4 x ptr> getelementptr (i16, ptr @ptr, <4 x i64> <i64 0, i64 1, i64 2, i64 3>)
;
bb:
ret <4 x ptr> getelementptr (i16, ptr @ptr, <4 x i64> <i64 0, i64 1, i64 2, i64 3>)
}
define <4 x ptr> @test3_constbase(i16 %idx) {
; CHECK-LABEL: @test3_constbase(
; CHECK-NEXT: bb:
; CHECK-NEXT: [[OFFSET:%.*]] = getelementptr [4 x i16], ptr @ptr, i16 0, i16 [[IDX:%.*]]
; CHECK-NEXT: [[DOTSPLATINSERT:%.*]] = insertelement <4 x ptr> poison, ptr [[OFFSET]], i64 0
; CHECK-NEXT: [[DOTSPLAT:%.*]] = shufflevector <4 x ptr> [[DOTSPLATINSERT]], <4 x ptr> poison, <4 x i32> zeroinitializer
; CHECK-NEXT: [[DOTSPLAT_I0:%.*]] = extractelement <4 x ptr> [[DOTSPLAT]], i32 0
; CHECK-NEXT: [[GEP_I0:%.*]] = getelementptr i16, ptr [[DOTSPLAT_I0]], i16 0
; CHECK-NEXT: [[DOTSPLAT_I1:%.*]] = extractelement <4 x ptr> [[DOTSPLAT]], i32 1
; CHECK-NEXT: [[GEP_I1:%.*]] = getelementptr i16, ptr [[DOTSPLAT_I1]], i16 1
; CHECK-NEXT: [[DOTSPLAT_I2:%.*]] = extractelement <4 x ptr> [[DOTSPLAT]], i32 2
; CHECK-NEXT: [[GEP_I2:%.*]] = getelementptr i16, ptr [[DOTSPLAT_I2]], i16 2
; CHECK-NEXT: [[DOTSPLAT_I3:%.*]] = extractelement <4 x ptr> [[DOTSPLAT]], i32 3
; CHECK-NEXT: [[GEP_I3:%.*]] = getelementptr i16, ptr [[DOTSPLAT_I3]], i16 3
; CHECK-NEXT: [[GEP_UPTO0:%.*]] = insertelement <4 x ptr> poison, ptr [[GEP_I0]], i32 0
; CHECK-NEXT: [[GEP_UPTO1:%.*]] = insertelement <4 x ptr> [[GEP_UPTO0]], ptr [[GEP_I1]], i32 1
; CHECK-NEXT: [[GEP_UPTO2:%.*]] = insertelement <4 x ptr> [[GEP_UPTO1]], ptr [[GEP_I2]], i32 2
; CHECK-NEXT: [[GEP:%.*]] = insertelement <4 x ptr> [[GEP_UPTO2]], ptr [[GEP_I3]], i32 3
; CHECK-NEXT: ret <4 x ptr> [[GEP]]
;
bb:
%offset = getelementptr [4 x i16], ptr @ptr, i16 0, i16 %idx
%gep = getelementptr i16, ptr %offset, <4 x i16> <i16 0, i16 1, i16 2, i16 3>
ret <4 x ptr> %gep
}
; Constant pointer with a variable vector offset
define <4 x ptr> @test3_varoffset(<4 x i16> %offset) {
; CHECK-LABEL: @test3_varoffset(
; CHECK-NEXT: bb:
; CHECK-NEXT: [[OFFSET_I0:%.*]] = extractelement <4 x i16> [[OFFSET:%.*]], i32 0
; CHECK-NEXT: [[GEP_I0:%.*]] = getelementptr i16, ptr @ptr, i16 [[OFFSET_I0]]
; CHECK-NEXT: [[OFFSET_I1:%.*]] = extractelement <4 x i16> [[OFFSET]], i32 1
; CHECK-NEXT: [[GEP_I1:%.*]] = getelementptr i16, ptr @ptr, i16 [[OFFSET_I1]]
; CHECK-NEXT: [[OFFSET_I2:%.*]] = extractelement <4 x i16> [[OFFSET]], i32 2
; CHECK-NEXT: [[GEP_I2:%.*]] = getelementptr i16, ptr @ptr, i16 [[OFFSET_I2]]
; CHECK-NEXT: [[OFFSET_I3:%.*]] = extractelement <4 x i16> [[OFFSET]], i32 3
; CHECK-NEXT: [[GEP_I3:%.*]] = getelementptr i16, ptr @ptr, i16 [[OFFSET_I3]]
; CHECK-NEXT: [[GEP_UPTO0:%.*]] = insertelement <4 x ptr> poison, ptr [[GEP_I0]], i32 0
; CHECK-NEXT: [[GEP_UPTO1:%.*]] = insertelement <4 x ptr> [[GEP_UPTO0]], ptr [[GEP_I1]], i32 1
; CHECK-NEXT: [[GEP_UPTO2:%.*]] = insertelement <4 x ptr> [[GEP_UPTO1]], ptr [[GEP_I2]], i32 2
; CHECK-NEXT: [[GEP:%.*]] = insertelement <4 x ptr> [[GEP_UPTO2]], ptr [[GEP_I3]], i32 3
; CHECK-NEXT: ret <4 x ptr> [[GEP]]
;
bb:
%gep = getelementptr i16, ptr @ptr, <4 x i16> %offset
ret <4 x ptr> %gep
}
; non-constant pointer
define void @test4() {
; CHECK-LABEL: @test4(
; CHECK-NEXT: bb:
; CHECK-NEXT: [[TMP0:%.*]] = load ptr, ptr @ptrptr, align 8
; CHECK-NEXT: [[DOTSPLATINSERT:%.*]] = insertelement <4 x ptr> poison, ptr [[TMP0]], i64 0
; CHECK-NEXT: [[DOTSPLAT:%.*]] = shufflevector <4 x ptr> [[DOTSPLATINSERT]], <4 x ptr> poison, <4 x i32> zeroinitializer
; CHECK-NEXT: [[DOTSPLAT_I0:%.*]] = extractelement <4 x ptr> [[DOTSPLAT]], i32 0
; CHECK-NEXT: [[DOTI0:%.*]] = getelementptr i16, ptr [[DOTSPLAT_I0]], i16 0
; CHECK-NEXT: [[DOTSPLAT_I1:%.*]] = extractelement <4 x ptr> [[DOTSPLAT]], i32 1
; CHECK-NEXT: [[DOTI1:%.*]] = getelementptr i16, ptr [[DOTSPLAT_I1]], i16 1
; CHECK-NEXT: [[DOTSPLAT_I2:%.*]] = extractelement <4 x ptr> [[DOTSPLAT]], i32 2
; CHECK-NEXT: [[DOTI2:%.*]] = getelementptr i16, ptr [[DOTSPLAT_I2]], i16 2
; CHECK-NEXT: [[DOTSPLAT_I3:%.*]] = extractelement <4 x ptr> [[DOTSPLAT]], i32 3
; CHECK-NEXT: [[DOTI3:%.*]] = getelementptr i16, ptr [[DOTSPLAT_I3]], i16 3
; CHECK-NEXT: ret void
;
bb:
%0 = load ptr, ptr @ptrptr
%1 = getelementptr i16, ptr %0, <4 x i16> <i16 0, i16 1, i16 2, i16 3>
ret void
}
; constant index, inbounds
define void @test5() {
; CHECK-LABEL: @test5(
; CHECK-NEXT: bb:
; CHECK-NEXT: [[TMP0:%.*]] = load <4 x ptr>, ptr @vec, align 32
; CHECK-NEXT: [[DOTI0:%.*]] = extractelement <4 x ptr> [[TMP0]], i32 0
; CHECK-NEXT: [[DOTI01:%.*]] = getelementptr inbounds i16, ptr [[DOTI0]], i16 1
; CHECK-NEXT: [[DOTI1:%.*]] = extractelement <4 x ptr> [[TMP0]], i32 1
; CHECK-NEXT: [[DOTI12:%.*]] = getelementptr inbounds i16, ptr [[DOTI1]], i16 1
; CHECK-NEXT: [[DOTI2:%.*]] = extractelement <4 x ptr> [[TMP0]], i32 2
; CHECK-NEXT: [[DOTI23:%.*]] = getelementptr inbounds i16, ptr [[DOTI2]], i16 1
; CHECK-NEXT: [[DOTI3:%.*]] = extractelement <4 x ptr> [[TMP0]], i32 3
; CHECK-NEXT: [[DOTI34:%.*]] = getelementptr inbounds i16, ptr [[DOTI3]], i16 1
; CHECK-NEXT: ret void
;
bb:
%0 = load <4 x ptr>, ptr @vec
%1 = getelementptr inbounds i16, <4 x ptr> %0, i16 1
ret void
}
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