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reload.c (find_reloads_subreg_address): Pass down TYPE unchanged.

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gcc:
        * reload.c (find_reloads_subreg_address): Pass down TYPE
        unchanged.  Change all callers except find_reloads_toplev.
gcc/testsuite:
        * gcc.c-torture/execute/pr23135.c: New test.

From-SVN: r102706
This commit is contained in:
J"orn Rennecke 2005-08-03 18:46:34 +00:00 • committed by Joern Rennecke
parent 279072c846
commit 1d4def65c8
2 changed files with 138 additions and 0 deletions
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4
gcc/testsuite/ChangeLog
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@ -1,3 +1,7 @@
2005-08-03 J"orn Rennecke <joern.rennecke@st.com>
* gcc.c-torture/execute/pr23135.c: New test.
2005-08-03 Volker Reichelt <reichelt@igpm.rwth-aachen.de>
PR tree-optimization/19899

134
gcc/testsuite/gcc.c-torture/execute/pr23135.c Normal file
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@ -0,0 +1,134 @@
/* Based on execute/simd-1.c, modifed by joern.rennecke@st.com to
trigger a reload bug. Verified for gcc mainline from 20050722 13:00 UTC
for sh-elf -m4 -O2. */
#ifndef STACK_SIZE
#define STACK_SIZE (256*1024)
#endif
typedef struct { char c[STACK_SIZE/2]; } big_t;
typedef int __attribute__((vector_size (8))) vecint;
typedef int __attribute__((mode(SI))) siint;
vecint i = { 150, 100 };
vecint j = { 10, 13 };
vecint k;
union {
vecint v;
siint i[2];
} res;
void
verify (siint a1, siint a2, siint b1, siint b2, big_t big)
{
if (a1 != b1
|| a2 != b2)
abort ();
}
int
main ()
{
big_t big;
vecint k0, k1, k2, k3, k4, k5, k6, k7;
k0 = i + j;
res.v = k0;
verify (res.i[0], res.i[1], 160, 113, big);
k1 = i * j;
res.v = k1;
verify (res.i[0], res.i[1], 1500, 1300, big);
k2 = i / j;
/* This is the observed failure - reload 0 has the wrong type and thus the
conflict with reload 1 is missed:
(insn:HI 94 92 96 1 pr23135.c:46 (parallel [
(set (subreg:SI (reg:DI 253) 0)
(div:SI (reg:SI 4 r4)
(reg:SI 5 r5)))
(clobber (reg:SI 146 pr))
(clobber (reg:DF 64 fr0))
(clobber (reg:DF 66 fr2))
(use (reg:PSI 151 ))
(use (reg/f:SI 256))
]) 60 {divsi3_i4} (insn_list:REG_DEP_TRUE 90 (insn_list:REG_DEP_TRUE 89
(insn_list:REG_DEP_TRUE 42 (insn_list:REG_DEP_TRUE 83 (insn_list:REG_DEP_TRUE 92
(insn_list:REG_DEP_TRUE 91 (nil)))))))
(expr_list:REG_DEAD (reg:SI 4 r4)
(expr_list:REG_DEAD (reg:SI 5 r5)
(expr_list:REG_UNUSED (reg:DF 66 fr2)
(expr_list:REG_UNUSED (reg:DF 64 fr0)
(expr_list:REG_UNUSED (reg:SI 146 pr)
(insn_list:REG_RETVAL 91 (nil))))))))
Reloads for insn # 94
Reload 0: reload_in (SI) = (plus:SI (reg/f:SI 14 r14)
(const_int 64 [0x40]))
GENERAL_REGS, RELOAD_FOR_OUTADDR_ADDRESS (opnum = 0)
reload_in_reg: (plus:SI (reg/f:SI 14 r14)
(const_int 64 [0x40]))
reload_reg_rtx: (reg:SI 3 r3)
Reload 1: GENERAL_REGS, RELOAD_FOR_OUTPUT_ADDRESS (opnum = 0), can't combine, se
condary_reload_p
reload_reg_rtx: (reg:SI 3 r3)
Reload 2: reload_out (SI) = (mem:SI (plus:SI (plus:SI (reg/f:SI 14 r14)
(const_int 64 [0x40]))
(const_int 28 [0x1c])) [ 16 S8 A32])
FPUL_REGS, RELOAD_FOR_OUTPUT (opnum = 0)
reload_out_reg: (subreg:SI (reg:DI 253) 0)
reload_reg_rtx: (reg:SI 150 fpul)
secondary_out_reload = 1
Reload 3: reload_in (SI) = (symbol_ref:SI ("__sdivsi3_i4") [flags 0x1])
GENERAL_REGS, RELOAD_FOR_INPUT (opnum = 1), can't combine
reload_in_reg: (reg/f:SI 256)
reload_reg_rtx: (reg:SI 3 r3)
*/
res.v = k2;
verify (res.i[0], res.i[1], 15, 7, big);
k3 = i & j;
res.v = k3;
verify (res.i[0], res.i[1], 2, 4, big);
k4 = i | j;
res.v = k4;
verify (res.i[0], res.i[1], 158, 109, big);
k5 = i ^ j;
res.v = k5;
verify (res.i[0], res.i[1], 156, 105, big);
k6 = -i;
res.v = k6;
verify (res.i[0], res.i[1], -150, -100, big);
k7 = ~i;
res.v = k7;
verify (res.i[0], res.i[1], -151, -101, big);
k = k0 + k1 + k3 + k4 + k5 + k6 + k7;
res.v = k;
verify (res.i[0], res.i[1], 1675, 1430, big);
k = k0 * k1 * k3 * k4 * k5 * k6 * k7;
res.v = k;
verify (res.i[0], res.i[1], 1456467968, -1579586240, big);
k = k0 / k1 / k2 / k3 / k4 / k5 / k6 / k7;
res.v = k;
verify (res.i[0], res.i[1], 0, 0, big);
exit (0);
}