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[Bug rtl-optimization/38595] New: gcc.target/mips/mips16e-extends.c fails for -mlong64
- From: "rsandifo at gcc dot gnu dot org" <gcc-bugzilla at gcc dot gnu dot org>
- To: gcc-bugs at gcc dot gnu dot org
- Date: 21 Dec 2008 13:48:21 -0000
- Subject: [Bug rtl-optimization/38595] New: gcc.target/mips/mips16e-extends.c fails for -mlong64
- Reply-to: gcc-bugzilla at gcc dot gnu dot org
mipsisa64-elf-gcc -O2 -S gcc.target/mips/mips16e-extends.c
-DMIPS16='__attribute__((mips16))' -msoftf-float
The output code does not contain the expected ZEB and ZEH instructions. (The
options here select EABI64, but the same problem occurs with other -mlong64
ABIs.)
The problem is that we don't have MIPS16e equivalents of the non-MIPS16
extend-truncate combiner patterns.
I'm filing this for 4.5 or later; it isn't something we'd fix in 4,4 or
earlier.
--
Summary: gcc.target/mips/mips16e-extends.c fails for -mlong64
Product: gcc
Version: 4.4.0
Status: UNCONFIRMED
Keywords: missed-optimization
Severity: normal
Priority: P3
Component: rtl-optimization
AssignedTo: unassigned at gcc dot gnu dot org
ReportedBy: rsandifo at gcc dot gnu dot org
GCC target triplet: mipsisa64-elf
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=38595