Author: wanglei Date: 2022-10-11T18:12:37+08:00 New Revision: 6547565e7bdcd9c3f683ad196b62d08c7061fdf1
URL: https://github.com/llvm/llvm-project/commit/6547565e7bdcd9c3f683ad196b62d08c7061fdf1 DIFF: https://github.com/llvm/llvm-project/commit/6547565e7bdcd9c3f683ad196b62d08c7061fdf1.diff LOG: [clang][LoongArch] Set MaxAtomicInlineWidth and MaxAtomicPromoteWidth for LoongArch Differential Revision: https://reviews.llvm.org/D135526 Added: clang/test/CodeGen/LoongArch/atomics.c Modified: clang/lib/Basic/Targets/LoongArch.h Removed: ################################################################################ diff --git a/clang/lib/Basic/Targets/LoongArch.h b/clang/lib/Basic/Targets/LoongArch.h index 5d711c6b1db4c..6a735a7d8f833 100644 --- a/clang/lib/Basic/Targets/LoongArch.h +++ b/clang/lib/Basic/Targets/LoongArch.h @@ -79,6 +79,9 @@ class LLVM_LIBRARY_VISIBILITY LoongArch32TargetInfo } return false; } + void setMaxAtomicWidth() override { + MaxAtomicPromoteWidth = MaxAtomicInlineWidth = 32; + } }; class LLVM_LIBRARY_VISIBILITY LoongArch64TargetInfo @@ -100,6 +103,9 @@ class LLVM_LIBRARY_VISIBILITY LoongArch64TargetInfo } return false; } + void setMaxAtomicWidth() override { + MaxAtomicPromoteWidth = MaxAtomicInlineWidth = 64; + } }; } // end namespace targets } // end namespace clang diff --git a/clang/test/CodeGen/LoongArch/atomics.c b/clang/test/CodeGen/LoongArch/atomics.c new file mode 100644 index 0000000000000..edc58d30db186 --- /dev/null +++ b/clang/test/CodeGen/LoongArch/atomics.c @@ -0,0 +1,45 @@ +// RUN: %clang_cc1 -triple loongarch32 -O1 -emit-llvm %s -o - \ +// RUN: | FileCheck %s --check-prefix=LA32 +// RUN: %clang_cc1 -triple loongarch64 -O1 -emit-llvm %s -o - \ +// RUN: | FileCheck %s --check-prefix=LA64 + +/// This test demonstrates that MaxAtomicInlineWidth is set appropriately. + +#include <stdatomic.h> +#include <stdint.h> + +void test_i8_atomics(_Atomic(int8_t) * a, int8_t b) { + // LA32: load atomic i8, ptr %a seq_cst, align 1 + // LA32: store atomic i8 %b, ptr %a seq_cst, align 1 + // LA32: atomicrmw add ptr %a, i8 %b seq_cst + // LA64: load atomic i8, ptr %a seq_cst, align 1 + // LA64: store atomic i8 %b, ptr %a seq_cst, align 1 + // LA64: atomicrmw add ptr %a, i8 %b seq_cst + __c11_atomic_load(a, memory_order_seq_cst); + __c11_atomic_store(a, b, memory_order_seq_cst); + __c11_atomic_fetch_add(a, b, memory_order_seq_cst); +} + +void test_i32_atomics(_Atomic(int32_t) * a, int32_t b) { + // LA32: load atomic i32, ptr %a seq_cst, align 4 + // LA32: store atomic i32 %b, ptr %a seq_cst, align 4 + // LA32: atomicrmw add ptr %a, i32 %b seq_cst + // LA64: load atomic i32, ptr %a seq_cst, align 4 + // LA64: store atomic i32 %b, ptr %a seq_cst, align 4 + // LA64: atomicrmw add ptr %a, i32 %b seq_cst + __c11_atomic_load(a, memory_order_seq_cst); + __c11_atomic_store(a, b, memory_order_seq_cst); + __c11_atomic_fetch_add(a, b, memory_order_seq_cst); +} + +void test_i64_atomics(_Atomic(int64_t) * a, int64_t b) { + // LA32: call i64 @__atomic_load_8 + // LA32: call void @__atomic_store_8 + // LA32: call i64 @__atomic_fetch_add_8 + // LA64: load atomic i64, ptr %a seq_cst, align 8 + // LA64: store atomic i64 %b, ptr %a seq_cst, align 8 + // LA64: atomicrmw add ptr %a, i64 %b seq_cst + __c11_atomic_load(a, memory_order_seq_cst); + __c11_atomic_store(a, b, memory_order_seq_cst); + __c11_atomic_fetch_add(a, b, memory_order_seq_cst); +} _______________________________________________ cfe-commits mailing list cfe-commits@lists.llvm.org https://lists.llvm.org/cgi-bin/mailman/listinfo/cfe-commits