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Reland "[clang][LoongArch] Set MaxAtomicInlineWidth and MaxAtomicProm…
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…oteWidth for LoongArch"

Differential Revision: https://reviews.llvm.org/D135526
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@wangleiat @SixWeining
wangleiat authored and SixWeining committed Oct 11, 2022
1 parent 91aa909 commit defe7c0
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Showing 3 changed files with 89 additions and 38 deletions.
6 changes: 6 additions & 0 deletions clang/lib/Basic/Targets/LoongArch.h
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Expand Up @@ -80,6 +80,9 @@ class LLVM_LIBRARY_VISIBILITY LoongArch32TargetInfo
}
return false;
}
void setMaxAtomicWidth() override {
MaxAtomicPromoteWidth = MaxAtomicInlineWidth = 32;
}
};

class LLVM_LIBRARY_VISIBILITY LoongArch64TargetInfo
Expand All @@ -101,6 +104,9 @@ class LLVM_LIBRARY_VISIBILITY LoongArch64TargetInfo
}
return false;
}
void setMaxAtomicWidth() override {
MaxAtomicPromoteWidth = MaxAtomicInlineWidth = 64;
}
};
} // end namespace targets
} // end namespace clang
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45 changes: 45 additions & 0 deletions clang/test/CodeGen/LoongArch/atomics.c
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@@ -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);
}
76 changes: 38 additions & 38 deletions clang/test/Preprocessor/init-loongarch.c
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Expand Up @@ -30,16 +30,16 @@
// LA32: #define __CHAR16_TYPE__ unsigned short
// LA32: #define __CHAR32_TYPE__ unsigned int
// LA32: #define __CHAR_BIT__ 8
// LA32: #define __CLANG_ATOMIC_BOOL_LOCK_FREE 1
// LA32: #define __CLANG_ATOMIC_CHAR16_T_LOCK_FREE 1
// LA32: #define __CLANG_ATOMIC_CHAR32_T_LOCK_FREE 1
// LA32: #define __CLANG_ATOMIC_CHAR_LOCK_FREE 1
// LA32: #define __CLANG_ATOMIC_INT_LOCK_FREE 1
// LA32: #define __CLANG_ATOMIC_BOOL_LOCK_FREE 2
// LA32: #define __CLANG_ATOMIC_CHAR16_T_LOCK_FREE 2
// LA32: #define __CLANG_ATOMIC_CHAR32_T_LOCK_FREE 2
// LA32: #define __CLANG_ATOMIC_CHAR_LOCK_FREE 2
// LA32: #define __CLANG_ATOMIC_INT_LOCK_FREE 2
// LA32: #define __CLANG_ATOMIC_LLONG_LOCK_FREE 1
// LA32: #define __CLANG_ATOMIC_LONG_LOCK_FREE 1
// LA32: #define __CLANG_ATOMIC_POINTER_LOCK_FREE 1
// LA32: #define __CLANG_ATOMIC_SHORT_LOCK_FREE 1
// LA32: #define __CLANG_ATOMIC_WCHAR_T_LOCK_FREE 1
// LA32: #define __CLANG_ATOMIC_LONG_LOCK_FREE 2
// LA32: #define __CLANG_ATOMIC_POINTER_LOCK_FREE 2
// LA32: #define __CLANG_ATOMIC_SHORT_LOCK_FREE 2
// LA32: #define __CLANG_ATOMIC_WCHAR_T_LOCK_FREE 2
// LA32: #define __DBL_DECIMAL_DIG__ 17
// LA32: #define __DBL_DENORM_MIN__ 4.9406564584124654e-324
// LA32: #define __DBL_DIG__ 15
Expand Down Expand Up @@ -70,17 +70,17 @@
// LA32: #define __FLT_MIN_EXP__ (-125)
// LA32: #define __FLT_MIN__ 1.17549435e-38F
// LA32: #define __FLT_RADIX__ 2
// LA32: #define __GCC_ATOMIC_BOOL_LOCK_FREE 1
// LA32: #define __GCC_ATOMIC_CHAR16_T_LOCK_FREE 1
// LA32: #define __GCC_ATOMIC_CHAR32_T_LOCK_FREE 1
// LA32: #define __GCC_ATOMIC_CHAR_LOCK_FREE 1
// LA32: #define __GCC_ATOMIC_INT_LOCK_FREE 1
// LA32: #define __GCC_ATOMIC_BOOL_LOCK_FREE 2
// LA32: #define __GCC_ATOMIC_CHAR16_T_LOCK_FREE 2
// LA32: #define __GCC_ATOMIC_CHAR32_T_LOCK_FREE 2
// LA32: #define __GCC_ATOMIC_CHAR_LOCK_FREE 2
// LA32: #define __GCC_ATOMIC_INT_LOCK_FREE 2
// LA32: #define __GCC_ATOMIC_LLONG_LOCK_FREE 1
// LA32: #define __GCC_ATOMIC_LONG_LOCK_FREE 1
// LA32: #define __GCC_ATOMIC_POINTER_LOCK_FREE 1
// LA32: #define __GCC_ATOMIC_SHORT_LOCK_FREE 1
// LA32: #define __GCC_ATOMIC_LONG_LOCK_FREE 2
// LA32: #define __GCC_ATOMIC_POINTER_LOCK_FREE 2
// LA32: #define __GCC_ATOMIC_SHORT_LOCK_FREE 2
// LA32: #define __GCC_ATOMIC_TEST_AND_SET_TRUEVAL 1
// LA32: #define __GCC_ATOMIC_WCHAR_T_LOCK_FREE 1
// LA32: #define __GCC_ATOMIC_WCHAR_T_LOCK_FREE 2
// LA32: #define __ILP32__ 1
// LA32: #define __INT16_C_SUFFIX__
// LA32: #define __INT16_FMTd__ "hd"
Expand Down Expand Up @@ -342,16 +342,16 @@
// LA64: #define __CHAR16_TYPE__ unsigned short
// LA64: #define __CHAR32_TYPE__ unsigned int
// LA64: #define __CHAR_BIT__ 8
// LA64: #define __CLANG_ATOMIC_BOOL_LOCK_FREE 1
// LA64: #define __CLANG_ATOMIC_CHAR16_T_LOCK_FREE 1
// LA64: #define __CLANG_ATOMIC_CHAR32_T_LOCK_FREE 1
// LA64: #define __CLANG_ATOMIC_CHAR_LOCK_FREE 1
// LA64: #define __CLANG_ATOMIC_INT_LOCK_FREE 1
// LA64: #define __CLANG_ATOMIC_LLONG_LOCK_FREE 1
// LA64: #define __CLANG_ATOMIC_LONG_LOCK_FREE 1
// LA64: #define __CLANG_ATOMIC_POINTER_LOCK_FREE 1
// LA64: #define __CLANG_ATOMIC_SHORT_LOCK_FREE 1
// LA64: #define __CLANG_ATOMIC_WCHAR_T_LOCK_FREE 1
// LA64: #define __CLANG_ATOMIC_BOOL_LOCK_FREE 2
// LA64: #define __CLANG_ATOMIC_CHAR16_T_LOCK_FREE 2
// LA64: #define __CLANG_ATOMIC_CHAR32_T_LOCK_FREE 2
// LA64: #define __CLANG_ATOMIC_CHAR_LOCK_FREE 2
// LA64: #define __CLANG_ATOMIC_INT_LOCK_FREE 2
// LA64: #define __CLANG_ATOMIC_LLONG_LOCK_FREE 2
// LA64: #define __CLANG_ATOMIC_LONG_LOCK_FREE 2
// LA64: #define __CLANG_ATOMIC_POINTER_LOCK_FREE 2
// LA64: #define __CLANG_ATOMIC_SHORT_LOCK_FREE 2
// LA64: #define __CLANG_ATOMIC_WCHAR_T_LOCK_FREE 2
// LA64: #define __DBL_DECIMAL_DIG__ 17
// LA64: #define __DBL_DENORM_MIN__ 4.9406564584124654e-324
// LA64: #define __DBL_DIG__ 15
Expand Down Expand Up @@ -382,17 +382,17 @@
// LA64: #define __FLT_MIN_EXP__ (-125)
// LA64: #define __FLT_MIN__ 1.17549435e-38F
// LA64: #define __FLT_RADIX__ 2
// LA64: #define __GCC_ATOMIC_BOOL_LOCK_FREE 1
// LA64: #define __GCC_ATOMIC_CHAR16_T_LOCK_FREE 1
// LA64: #define __GCC_ATOMIC_CHAR32_T_LOCK_FREE 1
// LA64: #define __GCC_ATOMIC_CHAR_LOCK_FREE 1
// LA64: #define __GCC_ATOMIC_INT_LOCK_FREE 1
// LA64: #define __GCC_ATOMIC_LLONG_LOCK_FREE 1
// LA64: #define __GCC_ATOMIC_LONG_LOCK_FREE 1
// LA64: #define __GCC_ATOMIC_POINTER_LOCK_FREE 1
// LA64: #define __GCC_ATOMIC_SHORT_LOCK_FREE 1
// LA64: #define __GCC_ATOMIC_BOOL_LOCK_FREE 2
// LA64: #define __GCC_ATOMIC_CHAR16_T_LOCK_FREE 2
// LA64: #define __GCC_ATOMIC_CHAR32_T_LOCK_FREE 2
// LA64: #define __GCC_ATOMIC_CHAR_LOCK_FREE 2
// LA64: #define __GCC_ATOMIC_INT_LOCK_FREE 2
// LA64: #define __GCC_ATOMIC_LLONG_LOCK_FREE 2
// LA64: #define __GCC_ATOMIC_LONG_LOCK_FREE 2
// LA64: #define __GCC_ATOMIC_POINTER_LOCK_FREE 2
// LA64: #define __GCC_ATOMIC_SHORT_LOCK_FREE 2
// LA64: #define __GCC_ATOMIC_TEST_AND_SET_TRUEVAL 1
// LA64: #define __GCC_ATOMIC_WCHAR_T_LOCK_FREE 1
// LA64: #define __GCC_ATOMIC_WCHAR_T_LOCK_FREE 2
// LA64: #define __INT16_C_SUFFIX__
// LA64: #define __INT16_FMTd__ "hd"
// LA64: #define __INT16_FMTi__ "hi"
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