llvm-6502/test/Transforms/DeadStoreElimination/memintrinsics.ll
Chris Lattner b85e4eba85 rip out a ton of intrinsic modernization logic from AutoUpgrade.cpp, which is
for pre-2.9 bitcode files.  We keep x86 unaligned loads, movnt, crc32, and the
target indep prefetch change.

As usual, updating the testsuite is a PITA.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@133337 91177308-0d34-0410-b5e6-96231b3b80d8
2011-06-18 06:05:24 +00:00

48 lines
1.0 KiB
LLVM

; RUN: opt -S -dse < %s | FileCheck %s
declare void @llvm.memcpy.p0i8.p0i8.i8(i8* nocapture, i8* nocapture, i8, i32, i1) nounwind
declare void @llvm.memmove.p0i8.p0i8.i8(i8* nocapture, i8* nocapture, i8, i32, i1) nounwind
declare void @llvm.memset.p0i8.i8(i8* nocapture, i8, i8, i32, i1) nounwind
define void @test1() {
; CHECK: @test1
%A = alloca i8
%B = alloca i8
store i8 0, i8* %A ;; Written to by memcpy
; CHECK-NOT: store
call void @llvm.memcpy.p0i8.p0i8.i8(i8* %A, i8* %B, i8 -1, i32 0, i1 false)
ret void
; CHECK: ret void
}
define void @test2() {
; CHECK: @test2
%A = alloca i8
%B = alloca i8
store i8 0, i8* %A ;; Written to by memmove
; CHECK-NOT: store
call void @llvm.memmove.p0i8.p0i8.i8(i8* %A, i8* %B, i8 -1, i32 0, i1 false)
ret void
; CHECK: ret void
}
define void @test3() {
; CHECK: @test3
%A = alloca i8
%B = alloca i8
store i8 0, i8* %A ;; Written to by memset
; CHECK-NOT: store
call void @llvm.memset.p0i8.i8(i8* %A, i8 0, i8 -1, i32 0, i1 false)
ret void
; CHECK: ret void
}