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sparc.md (adddi3): If operands[2] is 4096 and operands[1] is constant...

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* config/sparc/sparc.md (adddi3): If operands[2] is 4096 and
	operands[1] is constant, calculate the sum and generate movdi.
	(addsi3): Similarly.  Use SImode in call to arith_4096_operand.
	(subsi3): Use SImode in call to arith_4096_operand.

	* gcc.c-torture/execute/20001031-1.c: New test.

From-SVN: r37274
This commit is contained in:
Jakub Jelinek 2000-11-06 11:42:20 +01:00 committed by Jakub Jelinek
parent a0115140d0
commit 8b1c5fd025
4 changed files with 70 additions and 8 deletions
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7
gcc/ChangeLog
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@ -1,3 +1,10 @@
2000-11-06 Jakub Jelinek <jakub@redhat.com>
* config/sparc/sparc.md (adddi3): If operands[2] is 4096 and
operands[1] is constant, calculate the sum and generate movdi.
(addsi3): Similarly. Use SImode in call to arith_4096_operand.
(subsi3): Use SImode in call to arith_4096_operand.
2000-11-06 Jakub Jelinek <jakub@redhat.com>
* config/sparc/sparc.h (ASM_OUTPUT_MI_THUNK): On sparc64 we need to

30
gcc/config/sparc/sparc.md
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@ -5539,6 +5539,8 @@
""
"
{
HOST_WIDE_INT i;
if (! TARGET_ARCH64)
{
emit_insn (gen_rtx_PARALLEL (VOIDmode, gen_rtvec (2,
@ -5551,9 +5553,17 @@
}
if (arith_double_4096_operand(operands[2], DImode))
{
emit_insn (gen_rtx_SET (VOIDmode, operands[0],
gen_rtx_MINUS (DImode, operands[1],
GEN_INT(-4096))));
switch (GET_CODE (operands[1]))
{
case CONST_INT: i = INTVAL (operands[1]); break;
case CONST_DOUBLE: i = CONST_DOUBLE_LOW (operands[1]); break;
default:
emit_insn (gen_rtx_SET (VOIDmode, operands[0],
gen_rtx_MINUS (DImode, operands[1],
GEN_INT(-4096))));
DONE;
}
emit_insn (gen_movdi (operands[0], GEN_INT (i + 4096)));
DONE;
}
}")
@ -5768,11 +5778,15 @@
""
"
{
if (arith_4096_operand(operands[2], DImode))
if (arith_4096_operand(operands[2], SImode))
{
emit_insn (gen_rtx_SET (VOIDmode, operands[0],
gen_rtx_MINUS (SImode, operands[1],
GEN_INT(-4096))));
if (GET_CODE (operands[1]) == CONST_INT)
emit_insn (gen_movsi (operands[0],
GEN_INT (INTVAL (operands[1]) + 4096)));
else
emit_insn (gen_rtx_SET (VOIDmode, operands[0],
gen_rtx_MINUS (SImode, operands[1],
GEN_INT(-4096))));
DONE;
}
}")
@ -5967,7 +5981,7 @@
""
"
{
if (arith_4096_operand(operands[2], DImode))
if (arith_4096_operand(operands[2], SImode))
{
emit_insn (gen_rtx_SET (VOIDmode, operands[0],
gen_rtx_PLUS (SImode, operands[1],

4
gcc/testsuite/ChangeLog
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@ -1,3 +1,7 @@
2000-11-06 Jakub Jelinek <jakub@redhat.com>
* gcc.c-torture/execute/20001031-1.c: New test.
2000-11-04 Mark Mitchell <mark@codesourcery.com>
* g++.old-deja/g++.brendan/misc13.C: Put `strlen' in `std'

37
gcc/testsuite/gcc.c-torture/execute/20001031-1.c Normal file
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@ -0,0 +1,37 @@
extern void abort (void);
extern void exit (int);
void t1 (int x)
{
if (x != 4100)
abort ();
}
int t2 (void)
{
int i;
t1 ((i = 4096) + 4);
return i;
}
void t3 (long long x)
{
if (x != 0x80000fffULL)
abort ();
}
long long t4 (void)
{
long long i;
t3 ((i = 4096) + 0x7fffffffULL);
return i;
}
main ()
{
if (t2 () != 4096)
abort ();
if (t4 () != 4096)
abort ();
exit (0);
}