llvm-project

Commit Graph

Author	SHA1	Message	Date
Wang, Pengfei	e0c7db7d8c	[MS] Preserve base register %rbx around cpuid This patch copies implementation from cpuid.h, which preserve base register %rbx around cpuid. It fixes PR50133. Reviewed By: rnk Differential Revision: https://reviews.llvm.org/D101338	2021-04-30 10:16:25 +08:00
Reid Kleckner	902fa41188	[MS] Zero out ECX in __cpuid in intrin.h Summary: Some CPUID leafs depend on the value of ECX as well as EAX, but we left it uninitialized. Originally reported as https://crbug.com/901547 Reviewers: craig.topper, hans Subscribers: cfe-commits Differential Revision: https://reviews.llvm.org/D54171 llvm-svn: 346265	2018-11-06 20:45:26 +00:00

Author

SHA1

Message

Date

Wang, Pengfei

e0c7db7d8c

[MS] Preserve base register %rbx around cpuid

This patch copies implementation from cpuid.h, which preserve base register %rbx around cpuid. It fixes PR50133.

Reviewed By: rnk

Differential Revision: https://reviews.llvm.org/D101338

2021-04-30 10:16:25 +08:00

Reid Kleckner

902fa41188

[MS] Zero out ECX in __cpuid in intrin.h

Summary:
Some CPUID leafs depend on the value of ECX as well as EAX, but we left
it uninitialized.

Originally reported as https://crbug.com/901547

Reviewers: craig.topper, hans

Subscribers: cfe-commits

Differential Revision: https://reviews.llvm.org/D54171

llvm-svn: 346265

2018-11-06 20:45:26 +00:00

2 Commits