forked from OSchip/llvm-project
108 lines
3.5 KiB
LLVM
108 lines
3.5 KiB
LLVM
; RUN: opt < %s -scalarrepl -S | FileCheck %s
|
|
; PR3290
|
|
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"
|
|
|
|
;; Store of integer to whole alloca struct.
|
|
define i32 @test1(i64 %V) nounwind {
|
|
; CHECK: test1
|
|
; CHECK-NOT: alloca
|
|
%X = alloca {{i32, i32}}
|
|
%Y = bitcast {{i32,i32}}* %X to i64*
|
|
store i64 %V, i64* %Y
|
|
|
|
%A = getelementptr {{i32,i32}}, {{i32,i32}}* %X, i32 0, i32 0, i32 0
|
|
%B = getelementptr {{i32,i32}}, {{i32,i32}}* %X, i32 0, i32 0, i32 1
|
|
%a = load i32, i32* %A
|
|
%b = load i32, i32* %B
|
|
%c = add i32 %a, %b
|
|
ret i32 %c
|
|
}
|
|
|
|
;; Store of integer to whole struct/array alloca.
|
|
define float @test2(i128 %V) nounwind {
|
|
; CHECK: test2
|
|
; CHECK-NOT: alloca
|
|
%X = alloca {[4 x float]}
|
|
%Y = bitcast {[4 x float]}* %X to i128*
|
|
store i128 %V, i128* %Y
|
|
|
|
%A = getelementptr {[4 x float]}, {[4 x float]}* %X, i32 0, i32 0, i32 0
|
|
%B = getelementptr {[4 x float]}, {[4 x float]}* %X, i32 0, i32 0, i32 3
|
|
%a = load float, float* %A
|
|
%b = load float, float* %B
|
|
%c = fadd float %a, %b
|
|
ret float %c
|
|
}
|
|
|
|
;; Load of whole alloca struct as integer
|
|
define i64 @test3(i32 %a, i32 %b) nounwind {
|
|
; CHECK: test3
|
|
; CHECK-NOT: alloca
|
|
%X = alloca {{i32, i32}}
|
|
|
|
%A = getelementptr {{i32,i32}}, {{i32,i32}}* %X, i32 0, i32 0, i32 0
|
|
%B = getelementptr {{i32,i32}}, {{i32,i32}}* %X, i32 0, i32 0, i32 1
|
|
store i32 %a, i32* %A
|
|
store i32 %b, i32* %B
|
|
|
|
%Y = bitcast {{i32,i32}}* %X to i64*
|
|
%Z = load i64, i64* %Y
|
|
ret i64 %Z
|
|
}
|
|
|
|
;; load of integer from whole struct/array alloca.
|
|
define i128 @test4(float %a, float %b) nounwind {
|
|
; CHECK: test4
|
|
; CHECK-NOT: alloca
|
|
%X = alloca {[4 x float]}
|
|
%A = getelementptr {[4 x float]}, {[4 x float]}* %X, i32 0, i32 0, i32 0
|
|
%B = getelementptr {[4 x float]}, {[4 x float]}* %X, i32 0, i32 0, i32 3
|
|
store float %a, float* %A
|
|
store float %b, float* %B
|
|
|
|
%Y = bitcast {[4 x float]}* %X to i128*
|
|
%V = load i128, i128* %Y
|
|
ret i128 %V
|
|
}
|
|
|
|
;; If the elements of a struct or array alloca contain padding, SROA can still
|
|
;; split up the alloca as long as there is no padding between the elements.
|
|
%padded = type { i16, i8 }
|
|
define void @test5([4 x %padded]* %p, [4 x %padded]* %q) {
|
|
entry:
|
|
; CHECK: test5
|
|
; CHECK-NOT: i128
|
|
%var = alloca [4 x %padded], align 4
|
|
%vari8 = bitcast [4 x %padded]* %var to i8*
|
|
%pi8 = bitcast [4 x %padded]* %p to i8*
|
|
call void @llvm.memcpy.p0i8.p0i8.i32(i8* %vari8, i8* %pi8, i32 16, i32 4, i1 false)
|
|
%qi8 = bitcast [4 x %padded]* %q to i8*
|
|
call void @llvm.memcpy.p0i8.p0i8.i32(i8* %qi8, i8* %vari8, i32 16, i32 4, i1 false)
|
|
ret void
|
|
}
|
|
|
|
;; Check that an array alloca can be split up when it is also accessed with
|
|
;; a load or store as a homogeneous structure with the same element type and
|
|
;; number of elements as the array.
|
|
%homogeneous = type { <8 x i16>, <8 x i16>, <8 x i16> }
|
|
%wrapped_array = type { [3 x <8 x i16>] }
|
|
define void @test6(i8* %p, %wrapped_array* %arr) {
|
|
entry:
|
|
; CHECK: test6
|
|
; CHECK: store <8 x i16>
|
|
; CHECK: store <8 x i16>
|
|
; CHECK: store <8 x i16>
|
|
%var = alloca %wrapped_array, align 16
|
|
%res = call %homogeneous @test6callee(i8* %p)
|
|
%varcast = bitcast %wrapped_array* %var to %homogeneous*
|
|
store %homogeneous %res, %homogeneous* %varcast
|
|
%tmp1 = bitcast %wrapped_array* %arr to i8*
|
|
%tmp2 = bitcast %wrapped_array* %var to i8*
|
|
call void @llvm.memcpy.p0i8.p0i8.i32(i8* %tmp1, i8* %tmp2, i32 48, i32 16, i1 false)
|
|
ret void
|
|
}
|
|
|
|
declare %homogeneous @test6callee(i8* nocapture) nounwind
|
|
|
|
declare void @llvm.memcpy.p0i8.p0i8.i32(i8* nocapture, i8* nocapture, i32, i32, i1) nounwind
|