aboutsummaryrefslogtreecommitdiff
path: root/gcc/libgcc2.c
diff options
context:
space:
mode:
authorRichard Henderson <rth@redhat.com>2003-02-09 10:35:22 -0800
committerRichard Henderson <rth@gcc.gnu.org>2003-02-09 10:35:22 -0800
commit8275b011ca18ef074a86f39f67b16718e0d647fc (patch)
treec8d1fe4271c9afc4b804ffb4eb37b6fa41c21ecb /gcc/libgcc2.c
parent5d4b76c0a92e9392304030f8400c760d5a674bd4 (diff)
downloadgcc-8275b011ca18ef074a86f39f67b16718e0d647fc.zip
gcc-8275b011ca18ef074a86f39f67b16718e0d647fc.tar.gz
gcc-8275b011ca18ef074a86f39f67b16718e0d647fc.tar.bz2
libgcc-std.ver (__clztf2): New.
* libgcc-std.ver (__clztf2): New. (__ctztf2, __popcounttf2, __paritytf2): New. * libgcc2.c (__clzSI2, __clzDI2, __ctzSI2, __ctzDI2, __popcountSI2, __popcountDI2, __paritySI2, __parityDI2): Use UWmode and UDWmode; adjust code to match the different type sizes. * libgcc2.h (__clzSI2, __ctzSI2, __popcountSI2, __paritySI2, __clzDI2, __ctzDI2, __popcountDI2, __parityDI2): New macros. * optabs.c (init_integral_libfuncs): Don't hard-code SImode and TImode; select word_mode and twice that. (init_floating_libfuncs): Don't hard-code SFmode and TFmode; select the modes from float, double, and long double. (init_optabs): Remove duplicate initializations. From-SVN: r62606
Diffstat (limited to 'gcc/libgcc2.c')
-rw-r--r--gcc/libgcc2.c126
1 files changed, 66 insertions, 60 deletions
diff --git a/gcc/libgcc2.c b/gcc/libgcc2.c
index 3736b2c..069aedb 100644
--- a/gcc/libgcc2.c
+++ b/gcc/libgcc2.c
@@ -539,15 +539,13 @@ const UQItype __clz_tab[] =
#ifdef L_clzsi2
#undef int
-extern int __clzsi2 (USItype x);
+extern int __clzSI2 (UWtype x);
int
-__clzsi2 (USItype x)
+__clzSI2 (UWtype x)
{
- UWtype w = x;
Wtype ret;
- count_leading_zeros (ret, w);
- ret -= (sizeof(w) - sizeof(x)) * BITS_PER_UNIT;
+ count_leading_zeros (ret, x);
return ret;
}
@@ -555,25 +553,19 @@ __clzsi2 (USItype x)
#ifdef L_clzdi2
#undef int
-extern int __clzdi2 (UDItype x);
+extern int __clzDI2 (UDWtype x);
int
-__clzdi2 (UDItype x)
+__clzDI2 (UDWtype x)
{
+ DWunion uu;
UWtype word;
Wtype ret, add;
- if (sizeof(x) > sizeof(word))
- {
- DWunion uu;
-
- uu.ll = x;
- if (uu.s.high)
- word = uu.s.high, add = 0;
- else
- word = uu.s.low, add = W_TYPE_SIZE;
- }
+ uu.ll = x;
+ if (uu.s.high)
+ word = uu.s.high, add = 0;
else
- word = x, add = (Wtype)(sizeof(x) - sizeof(word)) * BITS_PER_UNIT;
+ word = uu.s.low, add = W_TYPE_SIZE;
count_leading_zeros (ret, word);
return ret + add;
@@ -582,9 +574,9 @@ __clzdi2 (UDItype x)
#ifdef L_ctzsi2
#undef int
-extern int __ctzsi2 (USItype x);
+extern int __ctzSI2 (UWtype x);
int
-__ctzsi2 (USItype x)
+__ctzSI2 (UWtype x)
{
Wtype ret;
@@ -596,25 +588,19 @@ __ctzsi2 (USItype x)
#ifdef L_ctzdi2
#undef int
-extern int __ctzdi2 (UDItype x);
+extern int __ctzDI2 (UDWtype x);
int
-__ctzdi2 (UDItype x)
+__ctzDI2 (UDWtype x)
{
+ DWunion uu;
UWtype word;
Wtype ret, add;
- if (sizeof(x) > sizeof(word))
- {
- DWunion uu;
-
- uu.ll = x;
- if (uu.s.low)
- word = uu.s.low, add = 0;
- else
- word = uu.s.high, add = W_TYPE_SIZE;
- }
+ uu.ll = x;
+ if (uu.s.low)
+ word = uu.s.low, add = 0;
else
- word = x, add = 0;
+ word = uu.s.high, add = W_TYPE_SIZE;
count_trailing_zeros (ret, word);
return ret + add;
@@ -642,57 +628,77 @@ const UQItype __popcount_tab[] =
#ifdef L_popcountsi2
#undef int
-extern int __popcountsi2 (USItype x);
+extern int __popcountSI2 (UWtype x);
int
-__popcountsi2 (USItype x)
+__popcountSI2 (UWtype x)
{
- return __popcount_tab[(x >> 0) & 0xff]
- + __popcount_tab[(x >> 8) & 0xff]
- + __popcount_tab[(x >> 16) & 0xff]
- + __popcount_tab[(x >> 24) & 0xff];
+ UWtype i, ret = 0;
+
+ for (i = 0; i < W_TYPE_SIZE; i += 8)
+ ret += __popcount_tab[(x >> i) & 0xff];
+
+ return ret;
}
#endif
#ifdef L_popcountdi2
#undef int
-extern int __popcountdi2 (UDItype x);
+extern int __popcountDI2 (UDWtype x);
int
-__popcountdi2 (UDItype x)
+__popcountDI2 (UDWtype x)
{
- return __popcount_tab[(x >> 0) & 0xff]
- + __popcount_tab[(x >> 8) & 0xff]
- + __popcount_tab[(x >> 16) & 0xff]
- + __popcount_tab[(x >> 24) & 0xff]
- + __popcount_tab[(x >> 32) & 0xff]
- + __popcount_tab[(x >> 40) & 0xff]
- + __popcount_tab[(x >> 48) & 0xff]
- + __popcount_tab[(x >> 56) & 0xff];
+ UWtype i, ret = 0;
+
+ for (i = 0; i < 2*W_TYPE_SIZE; i += 8)
+ ret += __popcount_tab[(x >> i) & 0xff];
+
+ return ret;
}
#endif
#ifdef L_paritysi2
#undef int
-extern int __paritysi2 (USItype x);
+extern int __paritySI2 (UWtype x);
int
-__paritysi2 (USItype x)
+__paritySI2 (UWtype x)
{
- UWtype nx = x;
- nx ^= nx >> 16;
- nx ^= nx >> 8;
- nx ^= nx >> 4;
- nx &= 0xf;
- return (0x6996 >> nx) & 1;
+#if W_TYPE_SIZE > 64
+# error "fill out the table"
+#endif
+#if W_TYPE_SIZE > 32
+ x ^= x >> 32;
+#endif
+#if W_TYPE_SIZE > 16
+ x ^= x >> 16;
+#endif
+ x ^= x >> 8;
+ x ^= x >> 4;
+ x &= 0xf;
+ return (0x6996 >> x) & 1;
}
#endif
#ifdef L_paritydi2
#undef int
-extern int __paritydi2 (UDItype x);
+extern int __parityDI2 (UDWtype x);
int
-__paritydi2 (UDItype x)
+__parityDI2 (UDWtype x)
{
- UWtype nx = x ^ (x >> 32);
+ DWunion uu;
+ UWtype nx;
+
+ uu.ll = x;
+ nx = uu.s.low ^ uu.s.high;
+
+#if W_TYPE_SIZE > 64
+# error "fill out the table"
+#endif
+#if W_TYPE_SIZE > 32
+ nx ^= nx >> 32;
+#endif
+#if W_TYPE_SIZE > 16
nx ^= nx >> 16;
+#endif
nx ^= nx >> 8;
nx ^= nx >> 4;
nx &= 0xf;