[Bug target/46883] GCC ICE with error: unrecognizable insn
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=46883 Ramana Radhakrishnan changed: What|Removed |Added Status|NEW |RESOLVED Resolution||FIXED Target Milestone|--- |4.6.0 --- Comment #8 from Ramana Radhakrishnan 2012-06-22 10:40:23 UTC --- Marking as fixed as I can see it fixed with 4.6.0 release , 4.6 branch, 4.7 branch and trunk.
[Bug target/46883] GCC ICE with error: unrecognizable insn
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=46883 Richard Guenther changed: What|Removed |Added Target Milestone|4.6.1 |---
[Bug target/46883] GCC ICE with error: unrecognizable insn
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=46883 Jakub Jelinek changed: What|Removed |Added Target Milestone|4.6.0 |4.6.1 --- Comment #7 from Jakub Jelinek 2011-03-25 19:53:23 UTC --- GCC 4.6.0 is being released, adjusting target milestone.
[Bug target/46883] GCC ICE with error: unrecognizable insn
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=46883 Richard Earnshaw changed: What|Removed |Added CC||rearnsha at gcc dot gnu.org --- Comment #6 from Richard Earnshaw 2011-01-06 11:02:32 UTC --- Chung-lin, your patch has been committed. Can this be closed now, or is there some outstanding problem?
[Bug target/46883] GCC ICE with error: unrecognizable insn
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=46883 --- Comment #5 from Chung-Lin Tang 2010-12-16 05:10:23 UTC --- Author: cltang Date: Thu Dec 16 05:10:18 2010 New Revision: 167900 URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=167900 Log: 2010-12-16 Chung-Lin Tang PR target/46883 * config/arm/arm.md (zero_extendhisi2 for register input splitter): Change "register_operand" to "s_register_operand". (zero_extendqisi2 for register input splitter): Same. testsuite/ * gcc.target/arm/pr46883.c: New testcase. Added: trunk/gcc/testsuite/gcc.target/arm/pr46883.c Modified: trunk/gcc/ChangeLog trunk/gcc/config/arm/arm.md trunk/gcc/testsuite/ChangeLog
[Bug target/46883] GCC ICE with error: unrecognizable insn
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=46883 Chung-Lin Tang changed: What|Removed |Added CC||cltang at gcc dot gnu.org --- Comment #4 from Chung-Lin Tang 2010-12-14 14:12:40 UTC --- Patch posted: http://gcc.gnu.org/ml/gcc-patches/2010-12/msg01096.html
[Bug target/46883] GCC ICE with error: unrecognizable insn
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=46883
Ulrich Weigand changed:
What|Removed |Added
CC||bernds at codesourcery dot
||com, uweigand at gcc dot
||gnu.org
--- Comment #3 from Ulrich Weigand 2010-12-13
18:54:48 UTC ---
Confirmed. A somewhat shorter testcase is:
void
bar (unsigned char *q, unsigned short *data16s, int len)
{
int i;
for (i = 0; i < len; i++)
{
q[2 * i] =
(((data16s[i] & 0xFF) << 8) | ((data16s[i] >> 8) & 0xFF)) & 0xFF;
q[2 * i + 1] =
((unsigned short)
(((data16s[i] & 0xFF) << 8) | ((data16s[i] >> 8) & 0xFF))) >> 8;
}
}
The problem seems to be that an insn:
(insn 88 86 90 4 (set (reg:SI 240)
(zero_extend:SI (subreg:QI (mem:HI (post_inc:SI (reg:SI 220 [ ivtmp.22
])) [2 MEM[(short unsigned int *)D.2066_62 + 4294967294B]+0 S2 A16]) 0)))
a.c:10 152 {*arm_zero_extendqisi2}
(expr_list:REG_INC (reg:SI 220 [ ivtmp.22 ])
(nil)))
gets transformed by a splitter into:
(insn 122 86 90 4 (set (reg:SI 240)
(and:SI (subreg:SI (mem:HI (post_inc:SI (reg:SI 220 [ ivtmp.22 ])) [2
MEM[(short unsigned int *)D.2066_62 + 4294967294B]+0 S2 A16]) 0)
(const_int 255 [0xff]))) a.c:10 -1
(expr_list:REG_INC (reg:SI 220 [ ivtmp.22 ])
(nil)))
But this isn't accepted by the andsi3 pattern, since the (subreg (mem ..)) does
not match the s_register_operand predicate.
The splitter
(define_split
[(set (match_operand:SI 0 "register_operand" "")
(zero_extend:SI (match_operand:QI 1 "register_operand" "")))]
"!arm_arch6"
[(set (match_dup 0) (ashift:SI (match_dup 2) (const_int 24)))
(set (match_dup 0) (lshiftrt:SI (match_dup 0) (const_int 24)))]
{
operands[2] = simplify_gen_subreg (SImode, operands[1], QImode, 0);
if (TARGET_ARM)
{
emit_insn (gen_andsi3 (operands[0], operands[2], GEN_INT (255)));
DONE;
}
})
was introduced by Bernd Schmidt's patch to improve zero- and sign-extension
handling on ARM (committed 2010-07-02), PR 42172:
http://gcc.gnu.org/ml/gcc-patches/2010-06/msg00832.html
Bernd, do you have any suggestions how to fix this?
[Bug target/46883] GCC ICE with error: unrecognizable insn
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=46883 Ramana Radhakrishnan changed: What|Removed |Added Keywords||ice-on-valid-code Target Milestone|--- |4.6.0
[Bug target/46883] GCC ICE with error: unrecognizable insn
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=46883 Ramana Radhakrishnan changed: What|Removed |Added Status|UNCONFIRMED |NEW Last reconfirmed||2010.12.10 13:25:49 CC||ramana at gcc dot gnu.org Ever Confirmed|0 |1 --- Comment #2 from Ramana Radhakrishnan 2010-12-10 13:25:49 UTC --- This seems to appear at -march=armv5te .
[Bug target/46883] GCC ICE with error: unrecognizable insn
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=46883 Mikael Pettersson changed: What|Removed |Added CC||mikpe at it dot uu.se --- Comment #1 from Mikael Pettersson 2010-12-10 13:04:05 UTC --- I see these ICEs too with gcc-4.6-20101127 on armv5tel-linux-gnueabi.
