Author: Phoebe Wang Date: 2025-01-10T15:49:16+08:00 New Revision: 5e92e8ca98dba21c9d8131e611f7158fe9ab3968
URL: https://github.com/llvm/llvm-project/commit/5e92e8ca98dba21c9d8131e611f7158fe9ab3968 DIFF: https://github.com/llvm/llvm-project/commit/5e92e8ca98dba21c9d8131e611f7158fe9ab3968.diff LOG: [X86] Fix the implementation of __readcr[4,8]/__writecr[4,8] to work in 64-bit mode (#122238) According to MSVC, __readcr4/__writecr4 return/use `unsigned __int64`, and are supported on both x86 and x64. While __readcr8/__writecr8 are only supported on x64. So we use __INTPTR_TYPE__ and __int64 respectively. Following: https://github.com/llvm/llvm-project/commit/3cec2a17de744900401c83aedb442e2acc1f23f8 Ref.: https://learn.microsoft.com/en-us/cpp/intrinsics/readcr3?view=msvc-170 https://learn.microsoft.com/en-us/cpp/intrinsics/readcr8?view=msvc-170 Added: Modified: clang/lib/Headers/intrin.h Removed: ################################################################################ diff --git a/clang/lib/Headers/intrin.h b/clang/lib/Headers/intrin.h index e8a01d1888026c..376046aeeaf5e9 100644 --- a/clang/lib/Headers/intrin.h +++ b/clang/lib/Headers/intrin.h @@ -94,8 +94,8 @@ void __outwordstring(unsigned short, unsigned short *, unsigned long); unsigned long __readcr0(void); unsigned long __readcr2(void); unsigned __LPTRINT_TYPE__ __readcr3(void); -unsigned long __readcr4(void); -unsigned long __readcr8(void); +unsigned __LPTRINT_TYPE__ __readcr4(void); +unsigned __int64 __readcr8(void); unsigned int __readdr(unsigned int); #ifdef __i386__ unsigned char __readfsbyte(unsigned long); @@ -124,8 +124,8 @@ void __vmx_vmptrst(unsigned __int64 *); void __wbinvd(void); void __writecr0(unsigned int); void __writecr3(unsigned __INTPTR_TYPE__); -void __writecr4(unsigned int); -void __writecr8(unsigned int); +void __writecr4(unsigned __INTPTR_TYPE__); +void __writecr8(unsigned __int64); void __writedr(unsigned int, unsigned int); void __writefsbyte(unsigned long, unsigned char); void __writefsdword(unsigned long, unsigned long); _______________________________________________ cfe-commits mailing list cfe-commits@lists.llvm.org https://lists.llvm.org/cgi-bin/mailman/listinfo/cfe-commits
