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68 lines
1.8 KiB
68 lines
1.8 KiB
#include <benchmark/benchmark.h> |
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#ifdef __clang__ |
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#pragma clang diagnostic ignored "-Wreturn-type" |
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#endif |
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// clang-format off |
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extern "C" { |
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extern int ExternInt; |
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benchmark::State& GetState(); |
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void Fn(); |
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} |
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// clang-format on |
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using benchmark::State; |
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// CHECK-LABEL: test_for_auto_loop: |
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extern "C" int test_for_auto_loop() { |
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State& S = GetState(); |
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int x = 42; |
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// CHECK: [[CALL:call(q)*]] _ZN9benchmark5State16StartKeepRunningEv |
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// CHECK-NEXT: testq %rbx, %rbx |
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// CHECK-NEXT: je [[LOOP_END:.*]] |
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for (auto _ : S) { |
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// CHECK: .L[[LOOP_HEAD:[a-zA-Z0-9_]+]]: |
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// CHECK-GNU-NEXT: subq $1, %rbx |
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// CHECK-CLANG-NEXT: {{(addq \$1, %rax|incq %rax|addq \$-1, %rbx)}} |
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// CHECK-NEXT: jne .L[[LOOP_HEAD]] |
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benchmark::DoNotOptimize(x); |
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} |
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// CHECK: [[LOOP_END]]: |
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// CHECK: [[CALL]] _ZN9benchmark5State17FinishKeepRunningEv |
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// CHECK: movl $101, %eax |
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// CHECK: ret |
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return 101; |
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} |
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// CHECK-LABEL: test_while_loop: |
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extern "C" int test_while_loop() { |
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State& S = GetState(); |
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int x = 42; |
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// CHECK: j{{(e|mp)}} .L[[LOOP_HEADER:[a-zA-Z0-9_]+]] |
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// CHECK-NEXT: .L[[LOOP_BODY:[a-zA-Z0-9_]+]]: |
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while (S.KeepRunning()) { |
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// CHECK-GNU-NEXT: subq $1, %[[IREG:[a-z]+]] |
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// CHECK-CLANG-NEXT: {{(addq \$-1,|decq)}} %[[IREG:[a-z]+]] |
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// CHECK: movq %[[IREG]], [[DEST:.*]] |
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benchmark::DoNotOptimize(x); |
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} |
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// CHECK-DAG: movq [[DEST]], %[[IREG]] |
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// CHECK-DAG: testq %[[IREG]], %[[IREG]] |
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// CHECK-DAG: jne .L[[LOOP_BODY]] |
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// CHECK-DAG: .L[[LOOP_HEADER]]: |
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// CHECK: cmpb $0 |
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// CHECK-NEXT: jne .L[[LOOP_END:[a-zA-Z0-9_]+]] |
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// CHECK: [[CALL:call(q)*]] _ZN9benchmark5State16StartKeepRunningEv |
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// CHECK: .L[[LOOP_END]]: |
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// CHECK: [[CALL]] _ZN9benchmark5State17FinishKeepRunningEv |
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// CHECK: movl $101, %eax |
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// CHECK: ret |
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return 101; |
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}
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