Commit Graph

4 Commits

Author SHA1 Message Date
Steven Wu 18bbe191cd Allow empty assembly string literal with -fno-gnu-inline-asm
Empty assembly string will not introduce assembly code in the output
binary and it is often used as a trick in the header to disable
optimizations. It doesn't conflict with the purpose of the option so it
is allowed with -fno-gnu-inline-asm flag.

llvm-svn: 237073
2015-05-12 00:16:37 +00:00
Steven Wu 6b72a6753b Allow AsmLabel with -fno-gnu-inline-asm
Summary:
AsmLabel is heavily used in system level and firmware to redirect
function and access platform specific labels. They are also extensively
used in system headers which makes this option unusable for many
users. Since AsmLabel doesn't introduce any assembly code into the
output binary, it shouldn't be considered as inline-asm.

Reviewers: bob.wilson, rnk

Reviewed By: rnk

Subscribers: cfe-commits

Differential Revision: http://reviews.llvm.org/D9679

llvm-svn: 237048
2015-05-11 21:14:09 +00:00
Steven Wu 2baa53ace9 Fix -fno-gnu-inline-asm doesn't catch file scope asm
Summary:
FileScopeAsm should be treated the same as funcion level inline asm.
-fno-gnu-inline-asm should trigger an error if file scope asm is used.
I missed this case from r226340. This should not affect ms-extension
because it is not allowed in the file scope.

Reviewers: bob.wilson, rnk

Reviewed By: rnk

Subscribers: cfe-commits

Differential Revision: http://reviews.llvm.org/D9328

llvm-svn: 236044
2015-04-28 21:49:09 +00:00
Steven Wu cb0d13fc23 Adding option -fno-inline-asm to disallow inline asm
Summary:
This patch add a new option to dis-allow all inline asm.
Any GCC style inline asm will be reported as an error.

Reviewers: rnk, echristo

Reviewed By: rnk, echristo

Subscribers: bob.wilson, rnk, echristo, rsmith, cfe-commits

Differential Revision: http://reviews.llvm.org/D6870

llvm-svn: 226340
2015-01-16 23:05:28 +00:00