[Bug target/36898] New: Insufficient qp-mutex declarations

["schwab at suse dot de" <gcc-bugzilla at gcc dot gnu dot org>]

The attached test case is causing a spurious dependency violation message from
the assembler.  The problem seems to be that the assembler is clearing all qp
mutex relations after a call, but the compiler does not emit .pred.rel.mutex
after them.

$ gcc -O2 -c -save-temps xdisp.c
xdisp.s: Assembler messages:
xdisp.s:114: Warning: Use of 'mov' may violate WAW dependency 'GR%, % in 1 -
127' (impliedf), specific resource number is 16
xdisp.s:113: Warning: This is the location of the conflicting usage


-- 
           Summary: Insufficient qp-mutex declarations
           Product: gcc
           Version: 4.4.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: target
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: schwab at suse dot de
GCC target triplet: ia64-*-*


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=36898