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re PR rtl-optimization/37514 (Wrong code generated for 20021120-1.c with -O3 -fomit-frame-pointer on sh4)

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PR rtl-optimization/37514
	* config/sh/sh.h (OPTIMIZATION_OPTIONS): Set
	flag_ira_share_spill_slots to 2 if it's already non-zero.
	(OVERRIDE_OPTIONS): Clear flag_ira_share_spill_slots if
        flag_ira_share_spill_slots is 2.
	* gcc.target/sh/pr37514.c: New test.

From-SVN: r141752
This commit is contained in:
Kaz Kojima 2008-11-10 23:10:10 +00:00
parent 3fe8e64bc2
commit befc25099b
4 changed files with 86 additions and 0 deletions
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8
gcc/ChangeLog
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@ -1,3 +1,11 @@
2008-11-10 Kaz Kojima <kkojima@gcc.gnu.org>
PR rtl-optimization/37514
* config/sh/sh.h (OPTIMIZATION_OPTIONS): Set
flag_ira_share_spill_slots to 2 if it's already non-zero.
(OVERRIDE_OPTIONS): Clear flag_ira_share_spill_slots if
flag_ira_share_spill_slots is 2.
2008-11-10 Kevin Buettner <kevinb@redhat.com>
* config/m32c/prologue.md (prologue_enter_16): Set FB to SP - 2.

9
gcc/config/sh/sh.h
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@ -496,6 +496,9 @@ do { \
the user explicitly requested this to be on or off. */ \
if (flag_schedule_insns > 0) \
flag_schedule_insns = 2; \
/* Likewise for flag_ira_share_spill_slots. */ \
if (flag_ira_share_spill_slots > 0) \
flag_ira_share_spill_slots = 2; \
\
set_param_value ("simultaneous-prefetches", 2); \
} while (0)
@ -730,6 +733,12 @@ do { \
} \
} \
\
/* FIXME. Currently -fira-share-spill-slots causes a wrong code \
problem PR 37514, though the compiler generates lengthy codes \
in some cases without it. */ \
if (flag_ira_share_spill_slots == 2) \
flag_ira_share_spill_slots = 0; \
\
if (align_loops == 0) \
align_loops = 1 << (TARGET_SH5 ? 3 : 2); \
if (align_jumps == 0) \

4
gcc/testsuite/ChangeLog
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@ -1,3 +1,7 @@
2008-11-10 Kaz Kojima <kkojima@gcc.gnu.org>
* gcc.target/sh/pr37514.c: New test.
2008-11-10 Eric Botcazou <ebotcazou@adacore.com>
* g++.dg/other/anon5.C: Skip on Solaris.

65
gcc/testsuite/gcc.target/sh/pr37514.c Normal file
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@ -0,0 +1,65 @@
/* This is essentially gcc.c-torture/execute/20021120-1.c run with
-O3 -fomit-frame-pointer -fira-share-spill-slots. */
/* { dg-do run { target "sh*-*-*" } } */
/* { dg-options "-O3 -fomit-frame-pointer -fira-share-spill-slots" } */
/* Macros to emit "L Nxx R" for each octal number xx between 000 and 037. */
#define OP1(L, N, R, I, J) L N##I##J R
#define OP2(L, N, R, I) \
OP1(L, N, R, 0, I), OP1(L, N, R, 1, I), \
OP1(L, N, R, 2, I), OP1(L, N, R, 3, I)
#define OP(L, N, R) \
OP2(L, N, R, 0), OP2(L, N, R, 1), OP2(L, N, R, 2), OP2(L, N, R, 3), \
OP2(L, N, R, 4), OP2(L, N, R, 5), OP2(L, N, R, 6), OP2(L, N, R, 7)
/* Declare 32 unique variables with prefix N. */
#define DECLARE(N) OP (, N,)
/* Copy 32 variables with prefix N from the array at ADDR.
Leave ADDR pointing to the end of the array. */
#define COPYIN(N, ADDR) OP (, N, = *(ADDR++))
/* Likewise, but copy the other way. */
#define COPYOUT(N, ADDR) OP (*(ADDR++) =, N,)
/* Add the contents of the array at ADDR to 32 variables with prefix N.
Leave ADDR pointing to the end of the array. */
#define ADD(N, ADDR) OP (, N, += *(ADDR++))
volatile double gd[32];
volatile float gf[32];
extern void abort (void);
static void foo (int n)
{
double DECLARE(d);
float DECLARE(f);
volatile double *pd;
volatile float *pf;
int i;
pd = gd; COPYIN (d, pd);
for (i = 0; i < n; i++)
{
pf = gf; COPYIN (f, pf);
pd = gd; ADD (d, pd);
pd = gd; ADD (d, pd);
pd = gd; ADD (d, pd);
pf = gf; COPYOUT (f, pf);
}
pd = gd; COPYOUT (d, pd);
}
int main ()
{
int i;
for (i = 0; i < 32; i++)
gd[i] = i, gf[i] = i;
foo (1);
for (i = 0; i < 32; i++)
if (gd[i] != i * 4 || gf[i] != i)
abort ();
return 0;
}