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[Pragma] Clear loop distribution attribute between loops 

llvm-svn: 279608
This commit is contained in:
Adam Nemet 2016-08-24 04:31:56 +00:00
parent 2862ba61c4
commit 9c84859075
2 changed files with 24 additions and 0 deletions
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1
clang/lib/CodeGen/CGLoopInfo.cpp
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@ -112,6 +112,7 @@ void LoopAttributes::clear() {
UnrollCount = 0;
VectorizeEnable = LoopAttributes::Unspecified;
UnrollEnable = LoopAttributes::Unspecified;
DistributeEnable = LoopAttributes::Unspecified;
}
LoopInfo::LoopInfo(BasicBlock *Header, const LoopAttributes &Attrs,

23
clang/test/CodeGenCXX/pragma-loop-distribute.cpp Normal file
View File

@ -0,0 +1,23 @@
// RUN: %clang_cc1 -triple x86_64-apple-darwin -std=c++11 -emit-llvm -o - %s | FileCheck %s
void while_test(int *List, int Length, int *List2, int Length2) {
// CHECK: define {{.*}} @_Z10while_test
int i = 0;
#pragma clang loop distribute(enable)
while (i < Length) {
// CHECK: br label {{.*}}, !llvm.loop ![[LOOP_1:.*]]
List[i] = i * 2;
i++;
}
i = 0;
while (i < Length2) {
// CHECK-NOT: br label {{.*}}, !llvm.loop
List2[i] = i * 2;
i++;
}
}
// CHECK: ![[LOOP_1]] = distinct !{![[LOOP_1]], ![[DISTRIBUTE_ENABLE:.*]]}
// CHECK: ![[DISTRIBUTE_ENABLE]] = !{!"llvm.loop.distribute.enable", i1 true}