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Improve dead code elimination

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This commit is contained in:
Justine Tunney 2021-02-08 04:04:42 -08:00
parent 760db8c5ad
commit 0e36cb3ac4
6606 changed files with 9685 additions and 9854 deletions
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40
test/libc/bits/division_test.c
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@ -17,7 +17,6 @@
│ PERFORMANCE OF THIS SOFTWARE. │
╚─────────────────────────────────────────────────────────────────────────────*/
#include "libc/bits/bits.h"
#include "libc/bits/progn.internal.h"
#include "libc/testlib/ezbench.h"
#include "libc/testlib/testlib.h"
@ -27,41 +26,18 @@
TEST(division, testUnsigned) {
volatile uint128_t x;
EXPECT_EQ(U(20769187431582143),
PROGN(x = U(1000000000123123123), (U(1125899906842624) << 64) / x));
x = U(1000000000123123123);
EXPECT_EQ(U(20769187431582143), (U(1125899906842624) << 64) / x);
x = U(42);
EXPECT_EQ((U(26807140639110) << 64) | U(1756832768924719201),
PROGN(x = U(42), (U(1125899906842624) << 64) / x));
(U(1125899906842624) << 64) / x);
}
TEST(division, testSigned) {
volatile int128_t x;
EXPECT_EQ(S(20769187431582143),
PROGN(x = S(1000000000123123123), (S(1125899906842624) << 64) / x));
x = S(1000000000123123123);
EXPECT_EQ(S(20769187431582143), (S(1125899906842624) << 64) / x);
x = S(42);
EXPECT_EQ(S(26807140639110) << 64 | S(1756832768924719201),
PROGN(x = S(42), (S(1125899906842624) << 64) / x));
}
BENCH(divmodti4, bench) {
volatile int128_t x;
EZBENCH2("divmodti4 small / small", donothing,
PROGN(x = S(42), x = S(112589990684) / x));
EZBENCH2("divmodti4 small / large", donothing,
PROGN(x = U(123) << 64 | 123, x = S(112589990684) / x));
EZBENCH2("divmodti4 large / small", donothing,
PROGN(x = 123, x = (S(1125899906842624) << 64 | 334) / x));
EZBENCH2(
"divmodti4 large / large", donothing,
PROGN(x = U(123) << 64 | 123, x = (S(1125899906842624) << 64 | 334) / x));
}
BENCH(idiv32, bench) {
volatile int32_t x;
EZBENCH2("idiv32", donothing,
PROGN(x = L(1000000000123123123), x = L(1125899906842624) / x));
}
BENCH(idiv64, bench) {
volatile int64_t x;
EZBENCH2("idiv64", donothing,
PROGN(x = L(1000000000123123123), x = L(1125899906842624) / x));
(S(1125899906842624) << 64) / x);
}