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llvm-mirror/test/Transforms/InstSimplify/vector_gep.ll
Davide Italiano 8f26902aec [InstSimplify] Deduce correct type for vector GEP.
InstSimplify returned the wrong type when simplifying a vector GEP
and we ended up crashing when trying to replace all uses with the
new value. Fixes PR32697.

Differential Revision: https://reviews.llvm.org/D32180

llvm-svn: 300693
2017-04-19 14:23:42 +00:00

89 lines
2.8 KiB
LLVM

; RUN: opt -S -instsimplify < %s | FileCheck %s
target datalayout = "e-m:o-i64:64-f80:128-n8:16:32:64-S128"
declare void @helper(<2 x i8*>)
define void @test(<2 x i8*> %a) {
%A = getelementptr i8, <2 x i8*> %a, <2 x i32> <i32 0, i32 0>
call void @helper(<2 x i8*> %A)
ret void
}
define <4 x i8*> @test1(<4 x i8*> %a) {
%gep = getelementptr i8, <4 x i8*> %a, <4 x i32> zeroinitializer
ret <4 x i8*> %gep
; CHECK-LABEL: @test1
; CHECK-NEXT: ret <4 x i8*> %a
}
define <4 x i8*> @test2(<4 x i8*> %a) {
%gep = getelementptr i8, <4 x i8*> %a
ret <4 x i8*> %gep
; CHECK-LABEL: @test2
; CHECK-NEXT: ret <4 x i8*> %a
}
%struct = type { double, float }
define <4 x float*> @test3() {
%gep = getelementptr %struct, <4 x %struct*> undef, <4 x i32> <i32 1, i32 1, i32 1, i32 1>, <4 x i32> <i32 1, i32 1, i32 1, i32 1>
ret <4 x float*> %gep
; CHECK-LABEL: @test3
; CHECK-NEXT: ret <4 x float*> undef
}
%struct.empty = type { }
define <4 x %struct.empty*> @test4(<4 x %struct.empty*> %a) {
%gep = getelementptr %struct.empty, <4 x %struct.empty*> %a, <4 x i32> <i32 1, i32 1, i32 1, i32 1>
ret <4 x %struct.empty*> %gep
; CHECK-LABEL: @test4
; CHECK-NEXT: ret <4 x %struct.empty*> %a
}
define <4 x i8*> @test5() {
%c = inttoptr <4 x i64> <i64 1, i64 2, i64 3, i64 4> to <4 x i8*>
%gep = getelementptr i8, <4 x i8*> %c, <4 x i32> <i32 1, i32 1, i32 1, i32 1>
ret <4 x i8*> %gep
; CHECK-LABEL: @test5
; CHECK-NEXT: ret <4 x i8*> getelementptr (i8, <4 x i8*> <i8* inttoptr (i64 1 to i8*), i8* inttoptr (i64 2 to i8*), i8* inttoptr (i64 3 to i8*), i8* inttoptr (i64 4 to i8*)>, <4 x i32> <i32 1, i32 1, i32 1, i32 1>)
}
@v = global [24 x [42 x [3 x i32]]] zeroinitializer, align 16
define <16 x i32*> @test6() {
; CHECK-LABEL: @test6
; CHECK-NEXT: ret <16 x i32*> getelementptr ([24 x [42 x [3 x i32]]], [24 x [42 x [3 x i32]]]* @v, <16 x i64> zeroinitializer, <16 x i64> zeroinitializer, <16 x i64> <i64 0, i64 1, i64 2, i64 3, i64 4, i64 5, i64 6, i64 7, i64 8, i64 9, i64 10, i64 11, i64 12, i64 13, i64 14, i64 15>, <16 x i64> zeroinitializer)
%VectorGep = getelementptr [24 x [42 x [3 x i32]]], [24 x [42 x [3 x i32]]]* @v, i64 0, i64 0, <16 x i64> <i64 0, i64 1, i64 2, i64 3, i64 4, i64 5, i64 6, i64 7, i64 8, i64 9, i64 10, i64 11, i64 12, i64 13, i64 14, i64 15>, i64 0
ret <16 x i32*> %VectorGep
}
; PR32697
; CHECK-LABEL: tinkywinky(
; CHECK-NEXT: ret <4 x i8*> undef
define <4 x i8*> @tinkywinky() {
%patatino = getelementptr i8, i8* undef, <4 x i64> undef
ret <4 x i8*> %patatino
}
; PR32697
; CHECK-LABEL: dipsy(
; CHECK-NEXT: ret <4 x i8*> undef
define <4 x i8*> @dipsy() {
%patatino = getelementptr i8, <4 x i8 *> undef, <4 x i64> undef
ret <4 x i8*> %patatino
}
; PR32697
; CHECK-LABEL: laalaa(
; CHECK-NEXT: ret <4 x i8*> undef
define <4 x i8*> @laalaa() {
%patatino = getelementptr i8, <4 x i8 *> undef, i64 undef
ret <4 x i8*> %patatino
}