forked from OSchip/llvm-project
93 lines
2.3 KiB
C
93 lines
2.3 KiB
C
// XFAIL: hexagon,sparc
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// (due to not having native load atomic support)
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// RUN: %clang_cc1 -emit-llvm %s -o - | FileCheck %s
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// RUN: %clang_cc1 -triple mips-linux-gnu -emit-llvm %s -o - | FileCheck %s
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void foo(int x)
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{
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_Atomic(int) i = 0;
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_Atomic(short) j = 0;
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// Check that multiply / divides on atomics produce a cmpxchg loop
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i *= 2;
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// CHECK: mul nsw i32
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// CHECK: {{(cmpxchg i32*|i1 @__atomic_compare_exchange\(i32 4,)}}
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i /= 2;
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// CHECK: sdiv i32
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// CHECK: {{(cmpxchg i32*|i1 @__atomic_compare_exchange\(i32 4, )}}
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j /= x;
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// CHECK: sdiv i32
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// CHECK: {{(cmpxchg i16*|i1 @__atomic_compare_exchange\(i32 2, )}}
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}
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extern _Atomic _Bool b;
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_Bool bar() {
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// CHECK-LABEL: @bar
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// CHECK: %[[load:.*]] = load atomic i8, i8* @b seq_cst
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// CHECK: %[[tobool:.*]] = trunc i8 %[[load]] to i1
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// CHECK: ret i1 %[[tobool]]
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return b;
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}
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extern _Atomic(_Complex int) x;
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void baz(int y) {
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// CHECK-LABEL: @baz
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// CHECK: {{store atomic|call void @__atomic_store}}
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x += y;
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}
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_Atomic(int) compound_add(_Atomic(int) in) {
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// CHECK-LABEL: @compound_add
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// CHECK: [[OLD:%.*]] = atomicrmw add i32* {{.*}}, i32 5 seq_cst
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// CHECK: [[NEW:%.*]] = add i32 [[OLD]], 5
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// CHECK: ret i32 [[NEW]]
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return (in += 5);
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}
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_Atomic(int) compound_sub(_Atomic(int) in) {
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// CHECK-LABEL: @compound_sub
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// CHECK: [[OLD:%.*]] = atomicrmw sub i32* {{.*}}, i32 5 seq_cst
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// CHECK: [[NEW:%.*]] = sub i32 [[OLD]], 5
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// CHECK: ret i32 [[NEW]]
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return (in -= 5);
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}
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_Atomic(int) compound_xor(_Atomic(int) in) {
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// CHECK-LABEL: @compound_xor
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// CHECK: [[OLD:%.*]] = atomicrmw xor i32* {{.*}}, i32 5 seq_cst
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// CHECK: [[NEW:%.*]] = xor i32 [[OLD]], 5
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// CHECK: ret i32 [[NEW]]
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return (in ^= 5);
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}
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_Atomic(int) compound_or(_Atomic(int) in) {
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// CHECK-LABEL: @compound_or
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// CHECK: [[OLD:%.*]] = atomicrmw or i32* {{.*}}, i32 5 seq_cst
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// CHECK: [[NEW:%.*]] = or i32 [[OLD]], 5
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// CHECK: ret i32 [[NEW]]
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return (in |= 5);
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}
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_Atomic(int) compound_and(_Atomic(int) in) {
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// CHECK-LABEL: @compound_and
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// CHECK: [[OLD:%.*]] = atomicrmw and i32* {{.*}}, i32 5 seq_cst
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// CHECK: [[NEW:%.*]] = and i32 [[OLD]], 5
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// CHECK: ret i32 [[NEW]]
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return (in &= 5);
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}
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_Atomic(int) compound_mul(_Atomic(int) in) {
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// CHECK-LABEL: @compound_mul
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// CHECK: cmpxchg i32* {{%.*}}, i32 {{%.*}}, i32 [[NEW:%.*]] seq_cst seq_cst
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// CHECK: ret i32 [[NEW]]
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return (in *= 5);
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}
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