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re PR target/43766 (x86 prefetch doesn't use complex memory addressing) 

PR target/43766
	* config/i386/i386.c (ix86_decompose_address): Handle ASHIFT addends.

testsuite/ChangeLog:

	PR target/43766
	* gcc.target/i386/pr43766.c: New test.

From-SVN: r158515
This commit is contained in:
Uros Bizjak 2010-04-19 14:37:16 +02:00
parent 7e4fe2c327
commit 90f775a9c7
4 changed files with 38 additions and 7 deletions
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14
gcc/ChangeLog
View File

@ -1,8 +1,12 @@
2010-04-19 Uros Bizjak <ubizjak@gmail.com>
PR target/43766
* config/i386/i386.c (ix86_decompose_address): Handle ASHIFT addends.
2010-04-19 Jie Zhang <jie@codesourcery.com> 2010-04-19 Jie Zhang <jie@codesourcery.com>
PR target/43662 PR target/43662
* reginfo.c (reinit_regs): Set caller_save_initialized_p * reginfo.c (reinit_regs): Set caller_save_initialized_p to false.
to false.
2010-04-19 Ira Rosen <irar@il.ibm.com> 2010-04-19 Ira Rosen <irar@il.ibm.com>
@ -82,10 +86,10 @@
(sse_prologue_save_insn1): New pattern and splitter. (sse_prologue_save_insn1): New pattern and splitter.
(sse_prologue_save_insn): Update to deal also with 64bit aligned (sse_prologue_save_insn): Update to deal also with 64bit aligned
blocks. blocks.
* i386.c (setup_incoming_varargs_64): Do not compute jump destination here. * i386.c (setup_incoming_varargs_64): Do not compute jump
destination here.
(ix86_gimplify_va_arg): Update alignment needed. (ix86_gimplify_va_arg): Update alignment needed.
(ix86_local_alignment): Do not align all local arrays (ix86_local_alignment): Do not align all local arrays to 128bit.
to 128bit.
2010-04-17 Jan Hubicka <jh@suse.cz> 2010-04-17 Jan Hubicka <jh@suse.cz>

16
gcc/config/i386/i386.c
View File

@ -9357,6 +9357,7 @@ ix86_decompose_address (rtx addr, struct ix86_address *out)
rtx base_reg, index_reg; rtx base_reg, index_reg;
HOST_WIDE_INT scale = 1; HOST_WIDE_INT scale = 1;
rtx scale_rtx = NULL_RTX; rtx scale_rtx = NULL_RTX;
rtx tmp;
int retval = 1; int retval = 1;
enum ix86_address_seg seg = SEG_DEFAULT; enum ix86_address_seg seg = SEG_DEFAULT;
@ -9392,6 +9393,19 @@ ix86_decompose_address (rtx addr, struct ix86_address *out)
scale_rtx = XEXP (op, 1); scale_rtx = XEXP (op, 1);
break; break;
case ASHIFT:
if (index)
return 0;
index = XEXP (op, 0);
tmp = XEXP (op, 1);
if (!CONST_INT_P (tmp))
return 0;
scale = INTVAL (tmp);
if ((unsigned HOST_WIDE_INT) scale > 3)
return 0;
scale = 1 << scale;
break;
case UNSPEC: case UNSPEC:
if (XINT (op, 1) == UNSPEC_TP if (XINT (op, 1) == UNSPEC_TP
&& TARGET_TLS_DIRECT_SEG_REFS && TARGET_TLS_DIRECT_SEG_REFS
@ -9432,8 +9446,6 @@ ix86_decompose_address (rtx addr, struct ix86_address *out)
} }
else if (GET_CODE (addr) == ASHIFT) else if (GET_CODE (addr) == ASHIFT)
{ {
rtx tmp;
/* We're called for lea too, which implements ashift on occasion. */ /* We're called for lea too, which implements ashift on occasion. */
index = XEXP (addr, 0); index = XEXP (addr, 0);
tmp = XEXP (addr, 1); tmp = XEXP (addr, 1);

5
gcc/testsuite/ChangeLog
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@ -1,3 +1,8 @@
2010-04-19 Uros Bizjak <ubizjak@gmail.com>
PR target/43766
* gcc.target/i386/pr43766.c: New test.
2010-04-19 Jie Zhang <jie@codesourcery.com> 2010-04-19 Jie Zhang <jie@codesourcery.com>
PR target/43662 PR target/43662

10
gcc/testsuite/gcc.target/i386/pr43766.c Normal file
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@ -0,0 +1,10 @@
/* { dg-do compile } */
/* { dg-options "-O2" } */
/* { dg-options "-O2 -msse -mregparm=3" { target ilp32 } } */
void p (int *a, int i)
{
__builtin_prefetch (&a[i]);
}
/* { dg-final { scan-assembler-not "lea" } } */