derek.holloway
7502bf64a4
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34 lines
951 B
C
34 lines
951 B
C
// RUN: %clang_cc1 -triple x86_64-apple-macosx10.14.0 -fsanitize=unsigned-integer-overflow %s -emit-llvm -o - | FileCheck %s
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_Atomic(unsigned) atomic;
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// CHECK-LABEL: define{{.*}} void @cmpd_assign
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void cmpd_assign(void) {
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// CHECK: br label %[[LOOP_START:.*]]
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// CHECK: [[LOOP_START]]:
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// CHECK-NEXT: phi i32 {{.*}}, [ {{.*}}, %[[INCOMING_BLOCK:.*]] ]
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// CHECK: [[INCOMING_BLOCK]]:
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// CHECK-NEXT: cmpxchg
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// CHECK-NEXT: extractvalue
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// CHECK-NEXT: extractvalue
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// CHECK-NEXT: br i1 %8, label %{{.*}}, label %[[LOOP_START]]
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atomic += 1;
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}
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// CHECK-LABEL: define{{.*}} void @inc
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void inc(void) {
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// CHECK: br label %[[LOOP_START:.*]]
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// CHECK: [[LOOP_START]]:
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// CHECK-NEXT: phi i32 {{.*}}, [ {{.*}}, %[[INCOMING_BLOCK:.*]] ]
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// CHECK: [[INCOMING_BLOCK]]:
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// CHECK-NEXT: cmpxchg
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// CHECK-NEXT: extractvalue
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// CHECK-NEXT: extractvalue
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// CHECK-NEXT: br i1 %8, label %{{.*}}, label %[[LOOP_START]]
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atomic++;
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}
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