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llvm-project/clang/test/CodeGenOpenCL/unroll-hint.cl

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[OpenCL] Generate metadata for opencl_unroll_hint attribute Add support for opencl_unroll_hint attribute from OpenCL v2.0 s6.11.5. Reusing most of metadata generation from CGLoopInfo helper class. The code is based on Khronos OpenCL compiler: https://github.com/KhronosGroup/SPIR/tree/spirv-1.0 Patch by Liu Yaxun (Sam)! Differential Revision: http://reviews.llvm.org/D16686 llvm-svn: 261350
2016-02-20 02:30:11 +08:00
// RUN: %clang_cc1 -emit-llvm -O0 -cl-std=CL2.0 -o - %s | FileCheck %s
[OpenCL] Enable unroll hint for OpenCL 1.x. Summary: Although the feature was introduced only in OpenCL C v2.0 spec., it's useful for OpenCL 1.x too and doesn't require HW support. Reviewers: Anastasia Subscribers: yaxunl, cfe-commits, bader Differential Revision: https://reviews.llvm.org/D27453 llvm-svn: 289535
2016-12-13 22:02:35 +08:00
// RUN: %clang_cc1 -emit-llvm -O0 -cl-std=CL1.2 -o - %s | FileCheck %s
[OpenCL] Generate metadata for opencl_unroll_hint attribute Add support for opencl_unroll_hint attribute from OpenCL v2.0 s6.11.5. Reusing most of metadata generation from CGLoopInfo helper class. The code is based on Khronos OpenCL compiler: https://github.com/KhronosGroup/SPIR/tree/spirv-1.0 Patch by Liu Yaxun (Sam)! Differential Revision: http://reviews.llvm.org/D16686 llvm-svn: 261350
2016-02-20 02:30:11 +08:00
/*** for ***/
void for_count()
{
// CHECK-LABEL: for_count
__attribute__((opencl_unroll_hint(8)))
for( int i = 0; i < 1000; ++i);
// CHECK: br label %{{.*}}, !llvm.loop ![[FOR_COUNT:.*]]
}
void for_disable()
{
// CHECK-LABEL: for_disable
__attribute__((opencl_unroll_hint(1)))
for( int i = 0; i < 1000; ++i);
// CHECK: br label %{{.*}}, !llvm.loop ![[FOR_DISABLE:.*]]
}
void for_full()
{
// CHECK-LABEL: for_full
__attribute__((opencl_unroll_hint))
for( int i = 0; i < 1000; ++i);
// CHECK: br label %{{.*}}, !llvm.loop ![[FOR_FULL:.*]]
}
/*** while ***/
void while_count()
{
// CHECK-LABEL: while_count
int i = 1000;
__attribute__((opencl_unroll_hint(8)))
while(i-->0);
// CHECK: br label %{{.*}}, !llvm.loop ![[WHILE_COUNT:.*]]
}
void while_disable()
{
// CHECK-LABEL: while_disable
int i = 1000;
__attribute__((opencl_unroll_hint(1)))
while(i-->0);
// CHECK: br label %{{.*}}, !llvm.loop ![[WHILE_DISABLE:.*]]
}
void while_full()
{
// CHECK-LABEL: while_full
int i = 1000;
__attribute__((opencl_unroll_hint))
while(i-->0);
// CHECK: br label %{{.*}}, !llvm.loop ![[WHILE_FULL:.*]]
}
/*** do ***/
void do_count()
{
// CHECK-LABEL: do_count
int i = 1000;
__attribute__((opencl_unroll_hint(8)))
do {} while(i--> 0);
// CHECK: br i1 %{{.*}}, label %{{.*}}, label %{{.*}}, !llvm.loop ![[DO_COUNT:.*]]
}
void do_disable()
{
// CHECK-LABEL: do_disable
int i = 1000;
__attribute__((opencl_unroll_hint(1)))
do {} while(i--> 0);
// CHECK: br i1 %{{.*}}, label %{{.*}}, label %{{.*}}, !llvm.loop ![[DO_DISABLE:.*]]
}
void do_full()
{
// CHECK-LABEL: do_full
int i = 1000;
__attribute__((opencl_unroll_hint))
do {} while(i--> 0);
// CHECK: br i1 %{{.*}}, label %{{.*}}, label %{{.*}}, !llvm.loop ![[DO_FULL:.*]]
}
// CHECK: ![[FOR_COUNT]] = distinct !{![[FOR_COUNT]], ![[COUNT:.*]]}
// CHECK: ![[COUNT]] = !{!"llvm.loop.unroll.count", i32 8}
// CHECK: ![[FOR_DISABLE]] = distinct !{![[FOR_DISABLE]], ![[DISABLE:.*]]}
// CHECK: ![[DISABLE]] = !{!"llvm.loop.unroll.disable"}
// CHECK: ![[FOR_FULL]] = distinct !{![[FOR_FULL]], ![[FULL:.*]]}
// CHECK: ![[FULL]] = !{!"llvm.loop.unroll.full"}
// CHECK: ![[WHILE_COUNT]] = distinct !{![[WHILE_COUNT]], ![[COUNT]]}
// CHECK: ![[WHILE_DISABLE]] = distinct !{![[WHILE_DISABLE]], ![[DISABLE]]}
// CHECK: ![[WHILE_FULL]] = distinct !{![[WHILE_FULL]], ![[FULL]]}
// CHECK: ![[DO_COUNT]] = distinct !{![[DO_COUNT]], ![[COUNT]]}
// CHECK: ![[DO_DISABLE]] = distinct !{![[DO_DISABLE]], ![[DISABLE]]}
// CHECK: ![[DO_FULL]] = distinct !{![[DO_FULL]], ![[FULL]]}