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[Bug target/26018] Assembler errors with -march=z900 compiling glibc
- From: "uweigand at gcc dot gnu dot org" <gcc-bugzilla at gcc dot gnu dot org>
- To: gcc-bugs at gcc dot gnu dot org
- Date: 30 Jan 2006 18:32:04 -0000
- Subject: [Bug target/26018] Assembler errors with -march=z900 compiling glibc
- References: <bug-26018-10053@http.gcc.gnu.org/bugzilla/>
- Reply-to: gcc-bugzilla at gcc dot gnu dot org
------- Comment #9 from uweigand at gcc dot gnu dot org 2006-01-30 18:32 -------
This appears to be a pre-existing bug in s390_decompose_address,
that happens to be triggered by this particular glibc code.
The problem is the construct &&label1 - &&label2 used in the
source (b.t.w. is this usage of the GCC &&label extension
valid in the first place?), which causes GCSE to generate RTL
of the form
(minus (label_ref ..) (label_ref ..))
s390_decompose_address accepts those, because I thought the only
time this construct could ever be generated is from within the
s390 machine-dependent reorg code ...
I'm currently testing a fix.
--
uweigand at gcc dot gnu dot org changed:
What |Removed |Added
----------------------------------------------------------------------------
AssignedTo|unassigned at gcc dot gnu |uweigand at gcc dot gnu dot
|dot org |org
Status|UNCONFIRMED |ASSIGNED
Ever Confirmed|0 |1
Last reconfirmed|0000-00-00 00:00:00 |2006-01-30 18:32:04
date| |
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=26018