Commit Graph

15 Commits

Author SHA1 Message Date
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 4f161cf1c2 [OpenMP] Ignore parens in atomic capture
Clang misdiagnoses atomic captures cases that contains parens.
i.e.

  int v, int *p;
#pragma omp atomic capture
{ v = (*p); (*p)++; }

Patch by David S.

Differential Revision: https://reviews.llvm.org/D22487

llvm-svn: 276167
2016-07-20 19:41:17 +00:00
Alexey Bataev 5a1954780f [OPENMP] Fix false diagnostic on instantiation-dependent exprs for atomic constructs.
Some of instantiation-dependent expressions could cause false diagnostic to be emitted about unsupported atomic constructs. Relaxed rules for detection of incorrect expressions.

llvm-svn: 246853
2015-09-04 12:55:50 +00:00
Alexey Bataev db39021cee [OPENMP] -fopenmp enables OpenMP support (fix for http://llvm.org/PR23492)
-fopenmp turns on OpenMP support and links libiomp5 as OpenMP library. Also there is -fopenmp={libiomp5|libgomp} option that allows to override effect of -fopenmp and link libgomp library (if -fopenmp=libgomp is specified).
Differential Revision: http://reviews.llvm.org/D9736

llvm-svn: 237769
2015-05-20 04:24:19 +00:00
Alexey Bataev 5e018f9e29 [OPENMP] Codegen for 'atomic capture'.
Adds codegen for 'atomic capture' constructs with the following forms of expressions/statements:

v = x binop= expr;
v = x++;
v = ++x;
v = x--;
v = --x;
v = x = x binop expr;
v = x = expr binop x;
{v = x; x = binop= expr;}
{v = x; x++;}
{v = x; ++x;}
{v = x; x--;}
{v = x; --x;}
{x = x binop expr; v = x;}
{x binop= expr; v = x;}
{x++; v = x;}
{++x; v = x;}
{x--; v = x;}
{--x; v = x;}
{x = x binop expr; v = x;}
{x = expr binop x; v = x;}
{v = x; x = expr;}
If x and expr are integer and binop is associative or x is a LHS in a RHS of the assignment expression, and atomics are allowed for type of x on the target platform atomicrmw instruction is emitted.
Otherwise compare-and-swap sequence is emitted.
Update of 'v' is not required to be be atomic with respect to the read or write of the 'x'.

bb:
...
atomic load <x>
cont:
<expected> = phi [ <x>, label %bb ], [ <new_failed>, %cont ]
<desired> = <expected> binop <expr>
<res> = cmpxchg atomic &<x>, desired, expected
<new_failed> = <res>.field1;
br <res>field2, label %exit, label %cont
exit:
atomic store <old/new x>, <v>
...
Differential Revision: http://reviews.llvm.org/D9049

llvm-svn: 235573
2015-04-23 06:35:10 +00:00
Alexey Bataev b78ca83d3b [OPENMP] Sema analysis for 'atomic capture' construct.
Added sema checks for forms of expressions/statements allowed under control of 'atomic capture' directive + generation of helper objects for future codegen.

llvm-svn: 233785
2015-04-01 03:33:17 +00:00
Alexey Bataev 1d160b1945 [OPENMP] Additional sema analysis for 'omp atomic[ update]'.
Adds additional semantic analysis + generation of helper expressions for proper codegen.

llvm-svn: 232164
2015-03-13 12:27:31 +00:00
Alexey Bataev f33eba6573 [OPENMP] Additional processing of 'omp atomic write' directive.
According to OpenMP standard, Section 2.12.6, atomic Construct, '#pragma omp atomic write' is allowed to be used only for expression statements of form 'x = expr;', where x is a lvalue expression and expr is an expression with scalar type. Patch adds checks for it.

llvm-svn: 222913
2014-11-28 07:21:40 +00:00
Alexey Bataev 62cec44ca4 [OPENMP] Additional processing of 'omp atomic read' directive.
According to OpenMP standard, Section 2.12.6, atomic Construct, '#pragma omp atomic read' is allowed to be used only for expression statements of form 'v = x;', where x and v (as applicable) are both l-value expressions with scalar type. Patch adds checks for it.

llvm-svn: 222231
2014-11-18 10:14:22 +00:00
Alexey Bataev 82bad8b026 [OPENMP] Initial parsing and sema analysis for clause 'seq_cst' of 'atomic' directive.
llvm-svn: 213846
2014-07-24 08:55:34 +00:00
Alexey Bataev 459dec0ca2 [OPENMP] Initial parsing and sema analysis for clause 'capture' in 'atomic' directive.
llvm-svn: 213842
2014-07-24 06:46:57 +00:00
Alexey Bataev 67a4f22f12 [OPENMP] Initial parsing and sema analysis for 'update' clause of 'atomic' directive.
llvm-svn: 213735
2014-07-23 10:25:33 +00:00
Alexey Bataev dea4761c06 [OPENMP] Initial parsing an sema analysis for 'write' clause of 'atomic' directive.
llvm-svn: 213728
2014-07-23 07:46:59 +00:00
Alexey Bataev f98b00c33e [OPENMP] Initial parsing and sema analysis for 'read' clause in 'atomic' directive.
llvm-svn: 213717
2014-07-23 02:27:21 +00:00
Alexey Bataev 0162e459ef [OPENMP] Initial parsing and sema analysis for 'atomic' directive.
llvm-svn: 213639
2014-07-22 10:10:35 +00:00