Initial import

libc/testlib/ezbench.h

@@ -0,0 +1,29 @@
+#ifndef COSMOPOLITAN_LIBC_TESTLIB_EZBENCH_H_
+#define COSMOPOLITAN_LIBC_TESTLIB_EZBENCH_H_
+#include "libc/macros.h"
+#include "libc/testlib/bench.h"
+#if !(__ASSEMBLER__ + __LINKER__ + 0)
+
+#define EZBENCH(INIT, EXPR) EZBENCH2(#EXPR, INIT, EXPR)
+#define EZBENCH2(NAME, INIT, EXPR)                                        \
+  do {                                                                    \
+    uint64_t Control, Speculative, MemoryStrict;                          \
+    Control = __testlib_ezbenchcontrol();                                 \
+    INIT;                                                                 \
+    EXPR;                                                                 \
+    Speculative = BENCHLOOP(__startbench, __endbench, 128, INIT, (EXPR)); \
+    MemoryStrict = BENCHLOOP(__startbench_m, __endbench_m, 8, ({          \
+                               INIT;                                      \
+                               thrashcodecache();                         \
+                             }),                                          \
+                             (EXPR));                                     \
+    Control = MIN(Control, MIN(Speculative, MemoryStrict));               \
+    __testlib_ezbenchreport(NAME, Speculative - Control,                  \
+                            MemoryStrict - Control);                      \
+  } while (0)
+
+void __testlib_ezbenchreport(const char *, uint64_t, uint64_t);
+uint64_t __testlib_ezbenchcontrol(void);
+
+#endif /* !(__ASSEMBLER__ + __LINKER__ + 0) */
+#endif /* COSMOPOLITAN_LIBC_TESTLIB_EZBENCH_H_ */