mirror of
https://github.com/c64scene-ar/llvm-6502.git
synced 2024-12-21 00:32:23 +00:00
b908f8ad6a
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85900 91177308-0d34-0410-b5e6-96231b3b80d8
26 lines
1.1 KiB
LLVM
26 lines
1.1 KiB
LLVM
; This test checks to see if scalarrepl also works when a gep with all zeroes is
|
|
; used instead of a bitcast to prepare a memmove pointer argument. Previously,
|
|
; this would not work when there was a vector involved in the struct, preventing
|
|
; scalarrepl from removing the alloca below.
|
|
|
|
; RUN: opt < %s -scalarrepl -S > %t
|
|
; RUN: cat %t | not grep alloca
|
|
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"
|
|
|
|
%struct.two = type <{ < 2 x i8 >, i16 }>
|
|
|
|
define void @main(%struct.two* %D, i16 %V) {
|
|
entry:
|
|
%S = alloca %struct.two
|
|
%S.2 = getelementptr %struct.two* %S, i32 0, i32 1
|
|
store i16 %V, i16* %S.2
|
|
; This gep is effectively a bitcast to i8*, but is sometimes generated
|
|
; because the type of the first element in %struct.two is i8.
|
|
%tmpS = getelementptr %struct.two* %S, i32 0, i32 0, i32 0
|
|
%tmpD = bitcast %struct.two* %D to i8*
|
|
call void @llvm.memmove.i32(i8* %tmpD, i8* %tmpS, i32 4, i32 1)
|
|
ret void
|
|
}
|
|
|
|
declare void @llvm.memmove.i32(i8*, i8*, i32, i32) nounwind
|