d2e83929a9
This will prevent LLVM optimization passes from creating illegal uses of the barrier() intrinsic (e.g. calling barrier() from a conditional that is not executed by all threads). llvm-svn: 193753
30 lines
950 B
LLVM
30 lines
950 B
LLVM
declare i32 @__clc_clk_local_mem_fence() nounwind alwaysinline
|
|
declare i32 @__clc_clk_global_mem_fence() nounwind alwaysinline
|
|
declare void @llvm.AMDGPU.barrier.local() nounwind noduplicate
|
|
declare void @llvm.AMDGPU.barrier.global() nounwind noduplicate
|
|
|
|
define void @barrier(i32 %flags) nounwind noduplicate alwaysinline {
|
|
barrier_local_test:
|
|
%CLK_LOCAL_MEM_FENCE = call i32 @__clc_clk_local_mem_fence()
|
|
%0 = and i32 %flags, %CLK_LOCAL_MEM_FENCE
|
|
%1 = icmp ne i32 %0, 0
|
|
br i1 %1, label %barrier_local, label %barrier_global_test
|
|
|
|
barrier_local:
|
|
call void @llvm.AMDGPU.barrier.local() noduplicate
|
|
br label %barrier_global_test
|
|
|
|
barrier_global_test:
|
|
%CLK_GLOBAL_MEM_FENCE = call i32 @__clc_clk_global_mem_fence()
|
|
%2 = and i32 %flags, %CLK_GLOBAL_MEM_FENCE
|
|
%3 = icmp ne i32 %2, 0
|
|
br i1 %3, label %barrier_global, label %done
|
|
|
|
barrier_global:
|
|
call void @llvm.AMDGPU.barrier.global() noduplicate
|
|
br label %done
|
|
|
|
done:
|
|
ret void
|
|
}
|