[clang] 4acee5b - Revert "[clang][X86] Add __cpuidex function to cpuid.h"

[Aiden Grossman via cfe-commits]

Author: Aiden Grossman
Date: 2023-05-18T05:37:48Z
New Revision: 4acee5b5cfa462af66225acda7d3d9efe1036aa9

URL: https://github.com/llvm/llvm-project/commit/4acee5b5cfa462af66225acda7d3d9efe1036aa9
DIFF: https://github.com/llvm/llvm-project/commit/4acee5b5cfa462af66225acda7d3d9efe1036aa9.diff

LOG: Revert "[clang][X86] Add __cpuidex function to cpuid.h"

This reverts commit 286cefcf35d0f55c57184c4219b95e82c96f1420.

Patch caused build failures for downstream projects on Windows due to
the fact that __cpuidex was added as a built in on Windows in D121653.
Reverting for now so that others aren't blocked and I can figure out a
proper solution.

Added: 
    

Modified: 
    clang/lib/Headers/cpuid.h
    clang/test/Headers/cpuid.c

Removed: 
    


################################################################################
diff  --git a/clang/lib/Headers/cpuid.h b/clang/lib/Headers/cpuid.h
index 22260c48c0c42..1ad6853a97c9d 100644
--- a/clang/lib/Headers/cpuid.h
+++ b/clang/lib/Headers/cpuid.h
@@ -328,10 +328,4 @@ static __inline int __get_cpuid_count (unsigned int __leaf,
     return 1;
 }
 
-static __inline void __cpuidex (int __cpu_info[4], int __leaf, int __subleaf)
-{
-  __cpuid_count(__leaf, __subleaf, __cpu_info[0], __cpu_info[1], __cpu_info[2],
-                __cpu_info[3]);
-}
-
 #endif /* __CPUID_H */

diff  --git a/clang/test/Headers/cpuid.c b/clang/test/Headers/cpuid.c
index 6ed12eca7a61d..7e485495c1066 100644
--- a/clang/test/Headers/cpuid.c
+++ b/clang/test/Headers/cpuid.c
@@ -6,19 +6,14 @@
 
 // CHECK-64: {{.*}} call { i32, i32, i32, i32 } asm "  xchgq  %rbx,${1:q}\0A cpuid\0A xchgq %rbx,${1:q}", "={ax},=r,={cx},={dx},0,~{dirflag},~{fpsr},~{flags}"(i32 %{{[a-z0-9]+}})
 // CHECK-64: {{.*}} call { i32, i32, i32, i32 } asm "  xchgq  %rbx,${1:q}\0A  cpuid\0A  xchgq  %rbx,${1:q}", "={ax},=r,={cx},={dx},0,2,~{dirflag},~{fpsr},~{flags}"(i32 %{{[a-z0-9]+}}, i32 %{{[a-z0-9]+}})
-// CHECK-64: {{.*}} call { i32, i32, i32, i32 } asm "  xchgq  %rbx,${1:q}\0A  cpuid\0A  xchgq  %rbx,${1:q}", "={ax},=r,={cx},={dx},0,2,~{dirflag},~{fpsr},~{flags}"(i32 %{{[a-z0-9]+}}, i32 %{{[a-z0-9]+}})
 
 // CHECK-32: {{.*}} call { i32, i32, i32, i32 } asm "cpuid", "={ax},={bx},={cx},={dx},0,~{dirflag},~{fpsr},~{flags}"(i32 %{{[a-z0-9]+}})
 // CHECK-32: {{.*}} call { i32, i32, i32, i32 } asm "cpuid", "={ax},={bx},={cx},={dx},0,2,~{dirflag},~{fpsr},~{flags}"(i32 %{{[a-z0-9]+}}, i32 %{{[a-z0-9]+}})
-// CHECK-32: {{.*}} call { i32, i32, i32, i32 } asm "cpuid", "={ax},={bx},={cx},={dx},0,2,~{dirflag},~{fpsr},~{flags}"(i32 %{{[a-z0-9]+}}, i32 %{{[a-z0-9]+}})
 
 unsigned eax0, ebx0, ecx0, edx0;
 unsigned eax1, ebx1, ecx1, edx1;
 
-int cpuid_info[4];
-
 void test_cpuid(unsigned level, unsigned count) {
   __cpuid(level, eax1, ebx1, ecx1, edx1);
   __cpuid_count(level, count, eax0, ebx0, ecx0, edx0);
-  __cpuidex(cpuid_info, level, count);
 }