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5 Commits

Author SHA1 Message Date
Fangrui Song fd739804e0 [test] Add {{.*}} to make ELF tests immune to dso_local/dso_preemptable/(none) differences 
For a default visibility external linkage definition, dso_local is set for ELF
-fno-pic/-fpie and COFF and Mach-O. Since default clang -cc1 for ELF is similar
to -fpic ("PIC Level" is not set), this nuance causes unneeded binary format differences.

To make emitted IR similar, ELF -cc1 -fpic will default to -fno-semantic-interposition,
which sets dso_local for default visibility external linkage definitions.

To make this flip smooth and enable future (dso_local as definition default),
this patch replaces (function) `define ` with `define{{.*}} `,
(variable/constant/alias) `= ` with `={{.*}} `, or inserts appropriate `{{.*}} `.
 2020-12-31 00:27:11 -08:00
Saiyedul Islam ff260ad0e0 [OpenMP] Ensure testing for versions 4.5 and default - Part 3 
This third patch in the series removes version 5.0 string from
test cases making them check for default version. It also add test
cases for version 4.5.

Reviewed By: ABataev

Differential Revision: https://reviews.llvm.org/D85214
 2020-08-27 19:37:04 +00:00
Alexey Bataev 34ee2549a7 [OPENMP50]Codegen for scan directive in for simd regions. 
Summary:
Added codegen for scan directives in parallel for regions.

Emits the code for the directive with inscan reductions.
Original code:
```
 #pragma omp for simd reduction(inscan, op : ...)
for(...) {
  <input phase>;
  #pragma omp scan (in)exclusive(...)
  <scan phase>
}
```
is transformed to something:
```
size num_iters = <num_iters>;
<type> buffer[num_iters];
 #pragma omp for simd
for (i: 0..<num_iters>) {
  <input phase>;
  buffer[i] = red;
}
 #pragma omp barrier
for (int k = 0; k != ceil(log2(num_iters)); ++k)
for (size cnt = last_iter; cnt >= pow(2, k); --k)
  buffer[i] op= buffer[i-pow(2,k)];
 #pragma omp for simd
for (0..<num_iters>) {
  red = InclusiveScan ? buffer[i] : buffer[i-1];
  <scan phase>;
}
```

Reviewers: jdoerfert

Reviewed By: jdoerfert

Subscribers: yaxunl, guansong, sstefan1, cfe-commits, caomhin

Tags: #clang

Differential Revision: https://reviews.llvm.org/D81658
 2020-06-17 08:43:17 -04:00
Alexey Bataev 0f631bd3bb Revert "[OPENMP50]Codegen for scan directive in for simd regions." 
This reverts commit 6e78a3086a to solve
the problem with mem leak.
 2020-06-16 17:01:59 -04:00
Alexey Bataev 6e78a3086a [OPENMP50]Codegen for scan directive in for simd regions. 
Summary:
Added codegen for scan directives in parallel for regions.

Emits the code for the directive with inscan reductions.
Original code:
```
 #pragma omp for simd reduction(inscan, op : ...)
for(...) {
  <input phase>;
  #pragma omp scan (in)exclusive(...)
  <scan phase>
}
```
is transformed to something:
```
size num_iters = <num_iters>;
<type> buffer[num_iters];
 #pragma omp for simd
for (i: 0..<num_iters>) {
  <input phase>;
  buffer[i] = red;
}
 #pragma omp barrier
for (int k = 0; k != ceil(log2(num_iters)); ++k)
for (size cnt = last_iter; cnt >= pow(2, k); --k)
  buffer[i] op= buffer[i-pow(2,k)];
 #pragma omp for simd
for (0..<num_iters>) {
  red = InclusiveScan ? buffer[i] : buffer[i-1];
  <scan phase>;
}
```

Reviewers: jdoerfert

Subscribers: yaxunl, guansong, sstefan1, cfe-commits, caomhin

Tags: #clang

Differential Revision: https://reviews.llvm.org/D81658
 2020-06-16 16:13:27 -04:00