1 ; RUN: opt < %s -scalarrepl -S | FileCheck %s
3 target datalayout = "E-p:64:64:64-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:32:64-f32:32:32-f64:64:64-v64:64:64-v128:128:128-a0:0:64"
5 ;; Store of integer to whole alloca struct.
6 define i32 @test1(i64 %V) nounwind {
9 %X = alloca {{i32, i32}}
10 %Y = bitcast {{i32,i32}}* %X to i64*
13 %A = getelementptr {{i32,i32}}* %X, i32 0, i32 0, i32 0
14 %B = getelementptr {{i32,i32}}* %X, i32 0, i32 0, i32 1
21 ;; Store of integer to whole struct/array alloca.
22 define float @test2(i128 %V) nounwind {
25 %X = alloca {[4 x float]}
26 %Y = bitcast {[4 x float]}* %X to i128*
27 store i128 %V, i128* %Y
29 %A = getelementptr {[4 x float]}* %X, i32 0, i32 0, i32 0
30 %B = getelementptr {[4 x float]}* %X, i32 0, i32 0, i32 3
33 %c = fadd float %a, %b
37 ;; Load of whole alloca struct as integer
38 define i64 @test3(i32 %a, i32 %b) nounwind {
41 %X = alloca {{i32, i32}}
43 %A = getelementptr {{i32,i32}}* %X, i32 0, i32 0, i32 0
44 %B = getelementptr {{i32,i32}}* %X, i32 0, i32 0, i32 1
48 %Y = bitcast {{i32,i32}}* %X to i64*
53 ;; load of integer from whole struct/array alloca.
54 define i128 @test4(float %a, float %b) nounwind {
57 %X = alloca {[4 x float]}
58 %A = getelementptr {[4 x float]}* %X, i32 0, i32 0, i32 0
59 %B = getelementptr {[4 x float]}* %X, i32 0, i32 0, i32 3
60 store float %a, float* %A
61 store float %b, float* %B
63 %Y = bitcast {[4 x float]}* %X to i128*
68 ;; If the elements of a struct or array alloca contain padding, SROA can still
69 ;; split up the alloca as long as there is no padding between the elements.
70 %padded = type { i16, i8 }
71 %arr = type [4 x %padded]
72 define void @test5(%arr* %p, %arr* %q) {
76 %var = alloca %arr, align 4
77 %vari8 = bitcast %arr* %var to i8*
78 %pi8 = bitcast %arr* %p to i8*
79 call void @llvm.memcpy.i32(i8* %vari8, i8* %pi8, i32 16, i32 4)
80 %qi8 = bitcast %arr* %q to i8*
81 call void @llvm.memcpy.i32(i8* %qi8, i8* %vari8, i32 16, i32 4)
85 declare void @llvm.memcpy.i32(i8* nocapture, i8* nocapture, i32, i32) nounwind