Commit Graph

6 Commits

Author SHA1 Message Date
Juneyoung Lee f193bcc701 Revert D105169 due to the two-stage failure in ASAN
This reverts the following commits:
37ca7a795b
9aa6c72b92
705387c507
8ca4b3ef19
80dba72a66
2021-10-18 23:52:46 +09:00
Juneyoung Lee 8ca4b3ef19 [Clang/Test]: Rename enable_noundef_analysis to disable-noundef-analysis and turn it off by default (2)
This patch updates test files after D105169.
Autogenerated test codes are changed by `utils/update_cc_test_checks.py,` and non-autogenerated test codes are changed as follows:

(1) I wrote a python script that (partially) updates the tests using regex: {F18594904} The script is not perfect, but I believe it gives hints about which patterns are updated to have `noundef` attached.

(2) The remaining tests are updated manually.

Reviewed By: eugenis

Differential Revision: https://reviews.llvm.org/D108453
2021-10-16 12:01:41 +09:00
sstefan1 fbfb1c7909 [IR] Make nosync, nofree and willreturn default for intrinsics.
D70365 allows us to make attributes default. This is a follow up to
actually make nosync, nofree and willreturn default. The approach we
chose, for now, is to opt-in to default attributes to avoid introducing
problems to target specific intrinsics. Intrinsics with default
attributes can be created using `DefaultAttrsIntrinsic` class.
2020-10-20 11:57:19 +02:00
Sanjay Patel 3e287b4d35 [CodeGen] convert math libcalls/builtins to equivalent LLVM intrinsics
There are 20 LLVM math intrinsics that correspond to mathlib calls according to the LangRef:
http://llvm.org/docs/LangRef.html#standard-c-library-intrinsics

We were only converting 3 mathlib calls (sqrt, fma, pow) and 12 builtin calls (ceil, copysign, 
fabs, floor, fma, fmax, fmin, nearbyint, pow, rint, round, trunc) to their intrinsic-equivalents.

This patch pulls the transforms together and handles all 20 cases. The switch is guarded by a 
check for const-ness to make sure we're not doing the transform if errno could possibly be set by
the libcall or builtin.

Differential Revision: https://reviews.llvm.org/D40044

llvm-svn: 319593
2017-12-01 23:15:52 +00:00
Sanjay Patel c5c8207eae [CodeGen] fix const-ness of builtin equivalents of <math.h> and <complex.h> functions that might set errno
This just makes const-ness of the builtins match const-ness of their lib function siblings. 
We're deferring fixing some of these that are obviously wrong to follow-up patches. 
Hopefully, the bugs are visible in the new test file (added at rL317220).

As the description in Builtins.def says: "e = const, but only when -fmath-errno=0".

This is step 2 of N to fix builtins and math calls as discussed in D39204.

Differential Revision: https://reviews.llvm.org/D39481

llvm-svn: 317265
2017-11-02 20:39:26 +00:00
Sanjay Patel 7cb25a888c [CodeGen] map sqrt libcalls to llvm.sqrt when errno is not set
The LLVM sqrt intrinsic definition changed with:
D28797
...so we don't have to use any relaxed FP settings other than errno handling.

This patch sidesteps a question raised in PR27435:
https://bugs.llvm.org/show_bug.cgi?id=27435

Is a programmer using __builtin_sqrt() invoking the compiler's intrinsic definition of sqrt or the mathlib definition of sqrt?

But we have an answer now: the builtin should match the behavior of the libm function including errno handling.

Differential Revision: https://reviews.llvm.org/D39204

llvm-svn: 317031
2017-10-31 20:19:39 +00:00