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* [Bug target/43741] New: sh-elf ICEs for libstdc++-v3/src/ios_init.cc with -m2a
@ 2010-04-13 1:13 kkojima at gcc dot gnu dot org
2010-04-13 1:16 ` [Bug target/43741] " kkojima at gcc dot gnu dot org
` (2 more replies)
0 siblings, 3 replies; 4+ messages in thread
From: kkojima at gcc dot gnu dot org @ 2010-04-13 1:13 UTC (permalink / raw)
To: gcc-bugs
Unified build on sh-unknown-elf with enabling c++ ICEs during
compiling libstdc++-v3/src/ios_init.cc with -m2a. It starts
to fail my recent change
r158208 | kkojima | 2010-04-12 07:59:36 +0900 (Mon, 12 Apr 2010) | 7 lines
* config/sh/sh-protos.h (sh_legitimize_reload_address): Declare.
* config/sh/sh.c: Include reload.h.
(sh_legitimize_reload_address): New.
* config/sh/sh.h (LEGITIMIZE_RELOAD_ADDRESS): Use
sh_legitimize_reload_address.
--
Summary: sh-elf ICEs for libstdc++-v3/src/ios_init.cc with -m2a
Product: gcc
Version: 4.6.0
Status: UNCONFIRMED
Keywords: ice-on-valid-code
Severity: normal
Priority: P3
Component: target
AssignedTo: unassigned at gcc dot gnu dot org
ReportedBy: kkojima at gcc dot gnu dot org
GCC target triplet: sh-elf
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=43741
^ permalink raw reply [flat|nested] 4+ messages in thread* [Bug target/43741] sh-elf ICEs for libstdc++-v3/src/ios_init.cc with -m2a 2010-04-13 1:13 [Bug target/43741] New: sh-elf ICEs for libstdc++-v3/src/ios_init.cc with -m2a kkojima at gcc dot gnu dot org @ 2010-04-13 1:16 ` kkojima at gcc dot gnu dot org 2010-04-15 3:35 ` kkojima at gcc dot gnu dot org 2010-04-17 3:54 ` kkojima at gcc dot gnu dot org 2 siblings, 0 replies; 4+ messages in thread From: kkojima at gcc dot gnu dot org @ 2010-04-13 1:16 UTC (permalink / raw) To: gcc-bugs ------- Comment #1 from kkojima at gcc dot gnu dot org 2010-04-13 01:16 ------- Created an attachment (id=20374) --> (http://gcc.gnu.org/bugzilla/attachment.cgi?id=20374&action=view) a reduced test case xxx.ii: In constructor 'std::ios_base::Init::Init()': xxx.ii:161:3: error: insn does not satisfy its constraints: (insn 284 282 285 6 xxx.ii:113 (set (reg:SI 1 r1) (reg/f:SI 319)) 176 {movsi_ie} (nil)) xxx.ii:161:3: internal compiler error: in reload_cse_simplify_operands, at postreload.c:396 which shows that the pseudo register remains after reload. The .ira rtl dump looks that sh_legitimize_reload_address makes a too complex reload for this case. I've confirmed the patch below fix the above failure. I'll apply it if it survives the usual tests and doesn't make the code quality worse with CSiBE tests. --- ORIG/trunk/gcc/config/sh/sh.c 2010-04-12 09:52:36.000000000 +0900 +++ trunk/gcc/config/sh/sh.c 2010-04-13 08:55:31.000000000 +0900 @@ -9649,8 +9649,7 @@ sh_legitimize_reload_address (rtx *p, en || XEXP (*p, 0) == hard_frame_pointer_rtx)) { rtx index_rtx = XEXP (*p, 1); - HOST_WIDE_INT offset = INTVAL (index_rtx), offset_base; - rtx sum; + HOST_WIDE_INT offset = INTVAL (index_rtx); if (TARGET_SH2A && mode == DFmode && (offset & 0x7)) { @@ -9665,24 +9664,6 @@ sh_legitimize_reload_address (rtx *p, en BASE_REG_CLASS, Pmode, VOIDmode, 0, 0, opnum, type); goto win; } - /* Instead of offset_base 128..131 use 124..127, so that - simple add suffices. */ - if (offset > 127) - offset_base = ((offset + 4) & ~60) - 4; - else - offset_base = offset & ~60; - /* Sometimes the normal form does not suit DImode. We could avoid - that by using smaller ranges, but that would give less optimized - code when SImode is prevalent. */ - if (offset_base != 0 - && GET_MODE_SIZE (mode) + offset - offset_base <= 64) - { - sum = gen_rtx_PLUS (Pmode, XEXP (*p, 0), GEN_INT (offset_base)); - *p = gen_rtx_PLUS (Pmode, sum, GEN_INT (offset - offset_base)); - push_reload (sum, NULL_RTX, &XEXP (*p, 0), NULL, - BASE_REG_CLASS, Pmode, VOIDmode, 0, 0, opnum, type); - goto win; - } } /* We must re-recognize what we created before. */ else if (GET_CODE (*p) == PLUS -- http://gcc.gnu.org/bugzilla/show_bug.cgi?id=43741 ^ permalink raw reply [flat|nested] 4+ messages in thread
* [Bug target/43741] sh-elf ICEs for libstdc++-v3/src/ios_init.cc with -m2a 2010-04-13 1:13 [Bug target/43741] New: sh-elf ICEs for libstdc++-v3/src/ios_init.cc with -m2a kkojima at gcc dot gnu dot org 2010-04-13 1:16 ` [Bug target/43741] " kkojima at gcc dot gnu dot org @ 2010-04-15 3:35 ` kkojima at gcc dot gnu dot org 2010-04-17 3:54 ` kkojima at gcc dot gnu dot org 2 siblings, 0 replies; 4+ messages in thread From: kkojima at gcc dot gnu dot org @ 2010-04-15 3:35 UTC (permalink / raw) To: gcc-bugs ------- Comment #2 from kkojima at gcc dot gnu dot org 2010-04-15 03:35 ------- I've noticed that I applied a wrong patch at revision 158208 and it causes the problematic reload in the failed case. I'll fix it. -- http://gcc.gnu.org/bugzilla/show_bug.cgi?id=43741 ^ permalink raw reply [flat|nested] 4+ messages in thread
* [Bug target/43741] sh-elf ICEs for libstdc++-v3/src/ios_init.cc with -m2a 2010-04-13 1:13 [Bug target/43741] New: sh-elf ICEs for libstdc++-v3/src/ios_init.cc with -m2a kkojima at gcc dot gnu dot org 2010-04-13 1:16 ` [Bug target/43741] " kkojima at gcc dot gnu dot org 2010-04-15 3:35 ` kkojima at gcc dot gnu dot org @ 2010-04-17 3:54 ` kkojima at gcc dot gnu dot org 2 siblings, 0 replies; 4+ messages in thread From: kkojima at gcc dot gnu dot org @ 2010-04-17 3:54 UTC (permalink / raw) To: gcc-bugs ------- Comment #3 from kkojima at gcc dot gnu dot org 2010-04-17 03:54 ------- Fixed. -- kkojima at gcc dot gnu dot org changed: What |Removed |Added ---------------------------------------------------------------------------- Status|UNCONFIRMED |RESOLVED Resolution| |FIXED http://gcc.gnu.org/bugzilla/show_bug.cgi?id=43741 ^ permalink raw reply [flat|nested] 4+ messages in thread
end of thread, other threads:[~2010-04-17 3:54 UTC | newest] Thread overview: 4+ messages (download: mbox.gz / follow: Atom feed) -- links below jump to the message on this page -- 2010-04-13 1:13 [Bug target/43741] New: sh-elf ICEs for libstdc++-v3/src/ios_init.cc with -m2a kkojima at gcc dot gnu dot org 2010-04-13 1:16 ` [Bug target/43741] " kkojima at gcc dot gnu dot org 2010-04-15 3:35 ` kkojima at gcc dot gnu dot org 2010-04-17 3:54 ` kkojima at gcc dot gnu dot org
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