memset.ll
2.01 KB
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; 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, LocationSize::precise(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, LocationSize::precise(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)