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9 Commits

Author SHA1 Message Date
Melanie Blower 66ddac22e2 [CLANG][PATCH][FPEnv] Add support for option -ffp-eval-method and extend #pragma float_control similarly 
The Intel compiler ICC supports the option "-fp-model=(source|double|extended)"
which causes the compiler to use a wider type for intermediate floating point
calculations. Also supported is a way to embed this effect in the source
program with #pragma float_control(source|double|extended).
This patch extends pragma float_control syntax, and also adds support
for a new floating point option "-ffp-eval-method=(source|double|extended)".
source: intermediate results use source precision
double: intermediate results use double precision
extended: intermediate results use extended precision

Reviewed By: Aaron Ballman

Differential Revision: https://reviews.llvm.org/D93769
 2021-07-28 10:50:32 -04:00
Melanie Blower d48ad358b1 Revert "[CLANG][PATCH][FPEnv] Add support for option -ffp-eval-method and extend #pragma float_control similarly" 
This reverts commit ce8024e8ff.
There are a couple buildbot problems
 2021-07-20 16:40:55 -04:00
Melanie Blower ce8024e8ff [CLANG][PATCH][FPEnv] Add support for option -ffp-eval-method and extend #pragma float_control similarly 
The Intel compiler ICC supports the option "-fp-model=(source|double|extended)"
which causes the compiler to use a wider type for intermediate floating point
calculations. Also supported is a way to embed this effect in the source
program with #pragma float_control(source|double|extended).
This patch extends pragma float_control syntax, and also adds support
for a new floating point option "-ffp-eval-method=(source|double|extended)".
source: intermediate results use source precision
double: intermediate results use double precision
extended: intermediate results use extended precision

Reviewed By: Aaron Ballman

Differential Revision: https://reviews.llvm.org/D93769
 2021-07-20 16:02:09 -04:00
Akira Hatanaka aade0ec23b Fix the guaranteed alignment of memory returned by malloc/new on Darwin 
The guaranteed alignment is 16 bytes on Darwin.

rdar://73431623

Differential Revision: https://reviews.llvm.org/D95910
 2021-02-03 19:40:51 -08:00
Zequan Wu 15a3ae1ab1 [Clang] Add __STDCPP_THREADS__ to standard predefine macros 
According to https://eel.is/c++draft/cpp.predefined#2.6, `__STDCPP_THREADS__` is a predefined macro.

Differential Revision: https://reviews.llvm.org/D91747
 2020-11-22 16:05:53 -08:00
Nick Desaulniers 91cdbd521a clang: Switch C compilations to C17 by default. 
Summary:
Matches GCC 8.1 (2018).

Updates documentation+release notes as well.

See also https://reviews.llvm.org/rL220244.

Reviewers: rsmith, aaron.ballman

Reviewed By: rsmith, aaron.ballman

Subscribers: aaron.ballman, dschuff, aheejin, simoncook, s.egerton, cfe-commits, hans, srhines

Tags: #clang

Differential Revision: https://reviews.llvm.org/D75383
 2020-03-02 09:39:26 -08:00
Roland McGrath d2e949eed5 [AArch64] Predefine __AARCH64_CMODEL_*__ as GCC does 
Make Clang on aarch64 targets predefine `__AARCH64_CMODEL_SMALL__`
or `__AARCH64_CMODEL_TINY__`, etc.  These are the names that GCC
uses for its predefines.

Reviewed By: tamur, MaskRay

Differential Revision: https://reviews.llvm.org/D75002
 2020-02-21 23:27:36 -08:00
Fangrui Song 0123744d46 [Preprocessor][test] Fix __VERSION__ in init-aarch64.c 2020-02-21 22:38:20 -08:00
Fangrui Song 59a572eb74 [Preprocessor][test] Move AArch64 tests from init.c to init-aarch.c 2020-02-21 22:22:59 -08:00