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Author SHA1 Message Date
Alexey Bataev c2c21ef9d2 [OPENMP]Initial fix PR42392: Improve -Wuninitialized warnings for OpenMP programs. 
Summary:
Some OpenMP clauses rely on the values of the variables. If the variable
is not initialized and used in OpenMP clauses that depend on the
variables values, it should be reported that the uninitialized variable
is used in the OpenMP clause expression.
This patch adds initial processing for uninitialized variables in OpenMP
constructs. Currently, it checks for use of the uninitialized variables
in the structured blocks.

Reviewers: NoQ, Szelethus, dcoughlin, xazax.hun, a.sidorin, george.karpenkov, szepet

Subscribers: rnkovacs, guansong, jfb, jdoerfert, cfe-commits

Tags: #clang

Differential Revision: https://reviews.llvm.org/D64356

llvm-svn: 365786
 2019-07-11 14:54:17 +00:00
Alexey Bataev a914888b49 [OPENMP]Add -Wunintialized to the erroneous tests for future fix PR42392, 
NFC.

llvm-svn: 365334
 2019-07-08 15:45:24 +00:00
Alexey Bataev 41ebe0ce64 [OPENMP]Fix PR41768: check DSA for globals with default(none) clauses. 
If the default(none) was specified for the construct, we might miss
diagnostic for the globals without explicitly specified data-sharing
attributes. Patch fixes this problem.

llvm-svn: 360362
 2019-05-09 18:14:57 +00:00
Roman Lebedev a8f8d3b01e Revert "[OPENMP]Fix PR41768: check DSA for globals with `default(none)` clauses." 
This has introduced (exposed?) a crash in clang sema,
that does not happen without this patch.
I'll followup in the original bugreport and commit with reproducer.

This reverts commit r360061.

llvm-svn: 360327
 2019-05-09 10:48:13 +00:00
Alexey Bataev cf9e7a282b [OPENMP]Fix PR41768: check DSA for globals with `default(none)` clauses. 
If the `default(none)` was specified for the construct, we might miss
diagnostic for the globals without explicitly specified data-sharing
attributes. Patch fixes this problem.

llvm-svn: 360061
 2019-05-06 17:49:22 +00:00
Alexey Bataev a8a9153a37 [OPENMP] Support for -fopenmp-simd option with compilation of simd loops 
only.

Added support for -fopenmp-simd option that allows compilation of
simd-based constructs without emission of OpenMP runtime calls.

llvm-svn: 321560
 2017-12-29 18:07:07 +00:00
Kelvin Li a579b9196c [OpenMP] Sema and parsing for 'target parallel for simd' pragma 
This patch is to implement sema and parsing for 'target parallel for simd' pragma.

Differential Revision: http://reviews.llvm.org/D22096

llvm-svn: 275365
 2016-07-14 02:54:56 +00:00