https://bugs.llvm.org/show_bug.cgi?id=35702
Bug ID: 35702
Summary: TBAA information is absent for vector types
Product: clang
Version: trunk
Hardware: PC
OS: All
Status: NEW
Severity: normal
Priority: P
Component: LLVM Codegen
Assignee: [email protected]
Reporter: [email protected]
CC: [email protected]
Run commands:
$ cat bug-01.c
typedef int __attribute__((vector_size(16))) v4si;
void func(v4si *p) {
v4si zero = { 0, 0, 0, 0 };
*p = zero;
}
$ clang -S -emit-llvm -O1 bug-01.c
The resulting .ll file contains:
define void @func(<4 x i32>* nocapture %p) local_unnamed_addr #0 {
entry:
store <4 x i32> zeroinitializer, <4 x i32>* %p, align 16, !tbaa !2
ret void
}
...
!2 = !{!3, !3, i64 0}
!3 = !{!"omnipotent char", !4, i64 0}
!4 = !{!"Simple C/C++ TBAA"}
Type information about pointer target is lost.
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