maxjhandsome
/
llvm-project
forked from OSchip/llvm-project
1
0
Fork 0
Code Issues Pull Requests Packages Releases Wiki Activity

[AST] Add test coverage of memsets 

Immediately after posting https://reviews.llvm.org/D51895, I noticed a small bug.  These tests would have caught that.

llvm-svn: 341880
This commit is contained in:
Philip Reames 2018-09-10 23:14:30 +00:00
parent 3875643928
commit 9f09161290
1 changed files with 48 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

48
llvm/test/Analysis/AliasSet/memset.ll Normal file
View File

@ -0,0 +1,48 @@
; RUN: opt -basicaa -print-alias-sets -S -o - < %s 2>&1 | FileCheck %s
@s = global i8 1, align 1
@d = global i8 2, align 1
; CHECK: Alias sets for function 'test_known_size':
; CHECK: Alias Set Tracker: 1 alias sets for 1 pointer values.
; CHECK: AliasSet[0x{{[0-9a-f]+}}, 1] must alias, Mod Pointers: (i8* %d, 1)
define void @test_known_size(i8* noalias %d) {
entry:
call void @llvm.memset.p0i8.i64(i8* align 1 %d, i8 0, i64 1, i1 false)
ret void
}
; CHECK: Alias sets for function 'test_unknown_size':
; CHECK: Alias Set Tracker: 1 alias sets for 1 pointer values.
; CHECK: AliasSet[0x{{[0-9a-f]+}}, 1] must alias, Mod Pointers: (i8* %d, unknown)
define void @test_unknown_size(i8* noalias %d, i64 %len) {
entry:
call void @llvm.memset.p0i8.i64(i8* align 1 %d, i8 0, i64 %len, i1 false)
ret void
}
; CHECK: Alias sets for function 'test_atomic_known_size':
; CHECK: Alias Set Tracker: 1 alias sets for 1 pointer values.
; CHECK: AliasSet[0x{{[0-9a-f]+}}, 1] must alias, Mod Pointers: (i8* %d, 1)
define void @test_atomic_known_size(i8* noalias %d) {
entry:
call void @llvm.memset.element.unordered.atomic.p0i8.i32(i8* align 1 %d, i8 0, i64 1, i32 1)
ret void
}
; CHECK: Alias sets for function 'test_atomic_unknown_size':
; CHECK: Alias Set Tracker: 1 alias sets for 1 pointer values.
; CHECK: AliasSet[0x{{[0-9a-f]+}}, 1] must alias, Mod Pointers: (i8* %d, unknown)
define void @test_atomic_unknown_size(i8* noalias %d, i64 %len) {
entry:
call void @llvm.memset.element.unordered.atomic.p0i8.i32(i8* align 1 %d, i8 0, i64 %len, i32 1)
ret void
}
declare void @llvm.memset.p0i8.i64(i8* %dest, i8 %val,
i64 %len, i1 %isvolatile)
declare void @llvm.memset.element.unordered.atomic.p0i8.i32(i8* %dest,
i8 %value,
i64 %len,
i32 %element_size)