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<rdar://problem/8914924> implement udivmodsi4 and divmodsi4 for ARM

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llvm-svn: 127778
This commit is contained in:
Nick Kledzik 2011-03-17 00:09:13 +00:00
parent b1db4b69cc
commit 47a823b281
6 changed files with 203 additions and 6 deletions
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8
compiler-rt/README.txt
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@ -77,8 +77,12 @@ ti_int __modti3 (ti_int a, ti_int b); // a % b signed
su_int __umodsi3 (su_int a, su_int b); // a % b unsigned
du_int __umoddi3 (du_int a, du_int b); // a % b unsigned
tu_int __umodti3 (tu_int a, tu_int b); // a % b unsigned
du_int __udivmoddi4(du_int a, du_int b, du_int* rem); // a / b, *rem = a % b
tu_int __udivmodti4(tu_int a, tu_int b, tu_int* rem); // a / b, *rem = a % b
du_int __udivmoddi4(du_int a, du_int b, du_int* rem); // a / b, *rem = a % b unsigned
tu_int __udivmodti4(tu_int a, tu_int b, tu_int* rem); // a / b, *rem = a % b unsigned
su_int __udivmodsi4(su_int a, su_int b, su_int* rem); // a / b, *rem = a % b unsigned
si_int __divmodsi4(si_int a, si_int b, si_int* rem); // a / b, *rem = a % b signed
// Integral arithmetic with trapping overflow

30
compiler-rt/lib/divmodsi4.c Normal file
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@ -0,0 +1,30 @@
/*===-- divmodsi4.c - Implement __divmodsi4 --------------------------------===
*
* The LLVM Compiler Infrastructure
*
* This file is dual licensed under the MIT and the University of Illinois Open
* Source Licenses. See LICENSE.TXT for details.
*
* ===----------------------------------------------------------------------===
*
* This file implements __divmodsi4 for the compiler_rt library.
*
* ===----------------------------------------------------------------------===
*/
#include "int_lib.h"
extern si_int __divsi3(si_int a, si_int b);
/* Returns: a / b, *rem = a % b */
si_int
__divmodsi4(si_int a, si_int b, si_int* rem)
{
si_int d = __divsi3(a,b);
*rem = a - (d*b);
return d;
}

30
compiler-rt/lib/udivmodsi4.c Normal file
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@ -0,0 +1,30 @@
/*===-- udivmodsi4.c - Implement __udivmodsi4 ------------------------------===
*
* The LLVM Compiler Infrastructure
*
* This file is dual licensed under the MIT and the University of Illinois Open
* Source Licenses. See LICENSE.TXT for details.
*
* ===----------------------------------------------------------------------===
*
* This file implements __udivmodsi4 for the compiler_rt library.
*
* ===----------------------------------------------------------------------===
*/
#include "int_lib.h"
extern su_int __udivsi3(su_int n, su_int d);
/* Returns: a / b, *rem = a % b */
su_int
__udivmodsi4(su_int a, su_int b, su_int* rem)
{
si_int d = __udivsi3(a,b);
*rem = a - (d*b);
return d;
}

9
compiler-rt/make/platform/darwin_bni.mk
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@ -61,10 +61,10 @@ FUNCTIONS.armv5 := $(FUNCTIONS) \
muldf3 mulsf3 \
negdf2 negsf2 \
truncdfsf2 \
modsi3 umodsi3 udivsi3 divsi3 \
modsi3 umodsi3 udivsi3 divsi3 udivmodsi4 divmodsi4 \
switch8 switchu8 switch16 switch32 \
sync_synchronize
FUNCTIONS.armv6 := $(FUNCTIONS) \
comparedf2 comparesf2 \
adddf3vfp addsf3vfp bswapdi2 bswapsi2 divdf3vfp \
@ -76,10 +76,11 @@ FUNCTIONS.armv6 := $(FUNCTIONS) \
muldf3vfp mulsf3vfp \
nedf2vfp nesf2vfp \
subdf3vfp subsf3vfp truncdfsf2vfp unorddf2vfp unordsf2vfp \
modsi3 umodsi3 udivsi3 divsi3 \
modsi3 umodsi3 udivsi3 divsi3 udivmodsi4 divmodsi4 \
switch8 switchu8 switch16 switch32 \
restore_vfp_d8_d15_regs save_vfp_d8_d15_regs \
sync_synchronize
FUNCTIONS.armv7 := $(FUNCTIONS) \
comparedf2 comparesf2 \
adddf3vfp addsf3vfp bswapdi2 bswapsi2 divdf3vfp \
@ -91,5 +92,5 @@ FUNCTIONS.armv7 := $(FUNCTIONS) \
muldf3vfp mulsf3vfp \
nedf2vfp nesf2vfp \
subdf3vfp subsf3vfp truncdfsf2vfp unorddf2vfp unordsf2vfp \
modsi3 umodsi3 udivsi3 divsi3
modsi3 umodsi3 udivsi3 divsi3 udivmodsi4 divmodsi4

73
compiler-rt/test/Unit/divmodsi4_test.c Normal file
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@ -0,0 +1,73 @@
//===-- divmodsi4_test.c - Test __divmodsi4 -------------------------------===//
//
// The LLVM Compiler Infrastructure
//
// This file is dual licensed under the MIT and the University of Illinois Open
// Source Licenses. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
//
// This file tests __divmodsi4 for the compiler_rt library.
//
//===----------------------------------------------------------------------===//
#include "int_lib.h"
#include <stdio.h>
// Returns: a / b
extern si_int __divmodsi4(si_int a, si_int b, si_int* rem);
int test__divmodsi4(si_int a, si_int b,
si_int expected_result, si_int expected_rem)
{
si_int rem;
si_int result = __divmodsi4(a, b, &rem);
if (result != expected_result) {
printf("error in __divmodsi4: %d / %d = %d, expected %d\n",
a, b, result, expected_result);
return 1;
}
if (rem != expected_rem) {
printf("error in __divmodsi4: %d mod %d = %d, expected %d\n",
a, b, rem, expected_rem);
return 1;
}
return 0;
}
int main()
{
if (test__divmodsi4(0, 1, 0, 0))
return 1;
if (test__divmodsi4(0, -1, 0, 0))
return 1;
if (test__divmodsi4(2, 1, 2, 0))
return 1;
if (test__divmodsi4(2, -1, -2, 0))
return 1;
if (test__divmodsi4(-2, 1, -2, 0))
return 1;
if (test__divmodsi4(-2, -1, 2, 0))
return 1;
if (test__divmodsi4(7, 5, 1, 2))
return 1;
if (test__divmodsi4(-7, 5, -1, -2))
return 1;
if (test__divmodsi4(19, 5, 3, 4))
return 1;
if (test__divmodsi4(19, -5, -3, 4))
return 1;
if (test__divmodsi4(0x80000000, 8, 0xf0000000, 0))
return 1;
if (test__divmodsi4(0x80000007, 8, 0xf0000001, -1))
return 1;
return 0;
}

59
compiler-rt/test/Unit/udivmodsi4_test.c Normal file
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@ -0,0 +1,59 @@
//===-- udivmodsi4_test.c - Test __udivmodsi4 -----------------------------===//
//
// The LLVM Compiler Infrastructure
//
// This file is dual licensed under the MIT and the University of Illinois Open
// Source Licenses. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
//
// This file tests __udivmodsi4 for the compiler_rt library.
//
//===----------------------------------------------------------------------===//
#include "int_lib.h"
#include <stdio.h>
// Returns: a / b
extern su_int __udivmodsi4(su_int a, su_int b, su_int* rem);
int test__udivmodsi4(su_int a, su_int b,
su_int expected_result, su_int expected_rem)
{
su_int rem;
su_int result = __udivmodsi4(a, b, &rem);
if (result != expected_result) {
printf("error in __udivmodsi4: %u / %u = %u, expected %u\n",
a, b, result, expected_result);
return 1;
}
if (rem != expected_rem) {
printf("error in __udivmodsi4: %u mod %u = %u, expected %u\n",
a, b, rem, expected_rem);
return 1;
}
return 0;
}
int main()
{
if (test__udivmodsi4(0, 1, 0, 0))
return 1;
if (test__udivmodsi4(2, 1, 2, 0))
return 1;
if (test__udivmodsi4(19, 5, 3, 4))
return 1;
if (test__udivmodsi4(0x80000000, 8, 0x10000000, 0))
return 1;
if (test__udivmodsi4(0x80000003, 8, 0x10000000, 3))
return 1;
return 0;
}