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| author | Alexey Bataev <a.bataev@hotmail.com> | 2015-02-27 06:33:30 +0000 |
|---|---|---|
| committer | Alexey Bataev <a.bataev@hotmail.com> | 2015-02-27 06:33:30 +0000 |
| commit | b832926176b7d533f9cb3f0406275551bc0a4a90 (patch) | |
| tree | ab10807843a010c5081e1e4be731d050ec91af39 /clang/test/OpenMP/atomic_read_codegen.c | |
| parent | 0bde1de3bdf6d68d0a5011f4000ceb80c768d537 (diff) | |
| download | bcm5719-llvm-b832926176b7d533f9cb3f0406275551bc0a4a90.tar.gz bcm5719-llvm-b832926176b7d533f9cb3f0406275551bc0a4a90.zip | |
[OPENMP] Codegen for "#pragma omp atomic write"
For global reg lvalue - use regular store through global register.
For simple lvalue - use simple atomic store.
For bitfields, vector element, extended vector elements - the original value of the whole storage (for vector elements) or of some aligned value (for bitfields) is atomically read, the part of this value for the given lvalue is modified and then use atomic compare-and-exchange operation to try to atomically write modified value (if it was not modified).
Also, changes in this patch fix the bug for '#pragma omp atomic read' applied to extended vector elements.
Differential Revision: http://reviews.llvm.org/D7369
llvm-svn: 230736
Diffstat (limited to 'clang/test/OpenMP/atomic_read_codegen.c')
| -rw-r--r-- | clang/test/OpenMP/atomic_read_codegen.c | 10 |
1 files changed, 5 insertions, 5 deletions
diff --git a/clang/test/OpenMP/atomic_read_codegen.c b/clang/test/OpenMP/atomic_read_codegen.c index c97fe8c2901..c9bbf1bfd02 100644 --- a/clang/test/OpenMP/atomic_read_codegen.c +++ b/clang/test/OpenMP/atomic_read_codegen.c @@ -242,7 +242,7 @@ int main() { #pragma omp atomic read ldv = bfx.a; // CHECK: [[LDTEMP_VOID_PTR:%.+]] = bitcast i32* [[LDTEMP:%.+]] to i8* -// CHECK: call void @__atomic_load(i64 4, i8* getelementptr (i8* bitcast (%struct.BitFields_packed* @bfx_packed to i8*), i64 4), i8* [[LDTEMP_VOID_PTR]], i32 5) +// CHECK: call void @__atomic_load(i64 4, i8* getelementptr (i8* bitcast (%struct.BitFields_packed* @bfx_packed to i8*), i64 4), i8* [[LDTEMP_VOID_PTR]], i32 0) // CHECK: [[LD:%.+]] = load i32* [[LDTEMP]] // CHECK: [[SHL:%.+]] = shl i32 [[LD]], 1 // CHECK: ashr i32 [[SHL]], 1 @@ -272,7 +272,7 @@ int main() { #pragma omp atomic read ldv = bfx3.a; // CHECK: [[LDTEMP_VOID_PTR:%.+]] = bitcast i24* [[LDTEMP:%.+]] to i8* -// CHECK: call void @__atomic_load(i64 3, i8* getelementptr (i8* bitcast (%struct.BitFields3_packed* @bfx3_packed to i8*), i64 1), i8* [[LDTEMP_VOID_PTR]], i32 5) +// CHECK: call void @__atomic_load(i64 3, i8* getelementptr (i8* bitcast (%struct.BitFields3_packed* @bfx3_packed to i8*), i64 1), i8* [[LDTEMP_VOID_PTR]], i32 0) // CHECK: [[LD:%.+]] = load i24* [[LDTEMP]] // CHECK: [[SHL:%.+]] = shl i24 [[LD]], 7 // CHECK: [[ASHR:%.+]] = ashr i24 [[SHL]], 10 @@ -314,9 +314,9 @@ int main() { // CHECK: store x86_fp80 #pragma omp atomic read ldv = bfx4_packed.b; -// CHECK: [[LD:%.+]] = load atomic i32* bitcast (<2 x float>* @{{.+}} to i32*) monotonic -// CHECK: [[BITCAST:%.+]] = bitcast <2 x float>* [[LDTEMP:%.+]] to i32* -// CHECK: store i32 [[LD]], i32* [[BITCAST]] +// CHECK: [[LD:%.+]] = load atomic i64* bitcast (<2 x float>* @{{.+}} to i64*) monotonic +// CHECK: [[BITCAST:%.+]] = bitcast <2 x float>* [[LDTEMP:%.+]] to i64* +// CHECK: store i64 [[LD]], i64* [[BITCAST]] // CHECK: [[LD:%.+]] = load <2 x float>* [[LDTEMP]] // CHECK: extractelement <2 x float> [[LD]] // CHECK: store i64 |
