[gcc r11-10387] i386: Uglify some local identifiers in *intrin.h [PR107748]

[gcc r11-10387] i386: Uglify some local identifiers in *intrin.h [PR107748]

[Jakub Jelinek]

https://gcc.gnu.org/g:961f0e1966549b7ce7c1cbce6a4a91f7062816f0

commit r11-10387-g961f0e1966549b7ce7c1cbce6a4a91f7062816f0
Author: Jakub Jelinek <jakub@redhat.com>
Date:   Mon Nov 21 10:28:27 2022 +0100

    i386: Uglify some local identifiers in *intrin.h [PR107748]
    
    While reporting PR107748 (where is a problem with non-uglified names,
    but I've left it out because it needs fixing anyway), I've noticed
    various spots where identifiers in *intrin.h headers weren't uglified.
    The following patch fixed those that are related to unions (I've grepped
    for [a-zA-Z]\.[a-zA-Z] spots).
    The reason we need those to be uglified is the same as why the arguments
    of the inlines are __ prefixed and most of automatic vars in the inlines
    - say a, v or u aren't part of implementation namespace and so users could
     #define u whatever->something
     #include <x86intrin.h>
    and it should still work, as long as u is not e.g. one of the names
    of the functions/macros the header provides (_mm* etc.).
    
    2022-11-21  Jakub Jelinek  <jakub@redhat.com>
    
            PR target/107748
            * config/i386/smmintrin.h (_mm_extract_ps): Uglify names of local
            variables and union members.
    
    (cherry picked from commit ec8ec09f9414be871e322fecf4ebf53e3687bd22)

Diff:
---
 gcc/config/i386/smmintrin.h | 13 +++++++------
 1 file changed, 7 insertions(+), 6 deletions(-)

diff --git a/gcc/config/i386/smmintrin.h b/gcc/config/i386/smmintrin.h
index f8c4c920790..183df7f1833 100644
--- a/gcc/config/i386/smmintrin.h
+++ b/gcc/config/i386/smmintrin.h
@@ -365,17 +365,18 @@ _mm_insert_ps (__m128 __D, __m128 __S, const int __N)
 extern __inline int __attribute__((__gnu_inline__, __always_inline__, __artificial__))
 _mm_extract_ps (__m128 __X, const int __N)
 {
-  union { int i; float f; } __tmp;
-  __tmp.f = __builtin_ia32_vec_ext_v4sf ((__v4sf)__X, __N);
-  return __tmp.i;
+  union { int __i; float __f; } __tmp;
+  __tmp.__f = __builtin_ia32_vec_ext_v4sf ((__v4sf)__X, __N);
+  return __tmp.__i;
 }
 #else
 #define _mm_extract_ps(X, N)						\
   (__extension__							\
    ({									\
-     union { int i; float f; } __tmp;					\
-     __tmp.f = __builtin_ia32_vec_ext_v4sf ((__v4sf)(__m128)(X), (int)(N)); \
-     __tmp.i;								\
+     union { int __i; float __f; } __tmp;				\
+     __tmp.__f = __builtin_ia32_vec_ext_v4sf ((__v4sf)(__m128)(X),	\
+					      (int)(N));		\
+     __tmp.__i;								\
    }))
 #endif