[Bug tree-optimization/51091] New: [4.7 Regression] FAIL: gcc.dg/tree-ssa/stdarg-2.c scan-tree-dump stdarg

[ubizjak at gmail dot com]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=51091

             Bug #: 51091
           Summary: [4.7 Regression] FAIL: gcc.dg/tree-ssa/stdarg-2.c
                    scan-tree-dump stdarg
    Classification: Unclassified
           Product: gcc
           Version: 4.7.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: tree-optimization
        AssignedTo: unassigned@gcc.gnu.org
        ReportedBy: ubizjak@gmail.com
              Host: i?86-pc-linux-gnu
            Target: i?86-pc-linux-gnu
             Build: i?86-pc-linux-gnu


Recent regression, fails on i?86-pc-linux-gnu:

FAIL: gcc.dg/tree-ssa/stdarg-2.c scan-tree-dump stdarg "f1: va_list escapes 0,
needs to save 0 GPR units"
FAIL: gcc.dg/tree-ssa/stdarg-2.c scan-tree-dump stdarg "f2: va_list escapes 0,
needs to save [148] GPR units"
FAIL: gcc.dg/tree-ssa/stdarg-2.c scan-tree-dump stdarg "f3: va_list escapes 0,
needs to save [1-9][0-9]* GPR units"
FAIL: gcc.dg/tree-ssa/stdarg-2.c scan-tree-dump stdarg "f6: va_list escapes 0,
needs to save (3|12|24) GPR units"
FAIL: gcc.dg/tree-ssa/stdarg-2.c scan-tree-dump stdarg "f11: va_list escapes 0,
needs to save (3|12|24) GPR units"
FAIL: gcc.dg/tree-ssa/stdarg-2.c scan-tree-dump stdarg "f12: va_list escapes 0,
needs to save [1-9][0-9]* GPR units"
FAIL: gcc.dg/tree-ssa/stdarg-2.c scan-tree-dump stdarg "f13: va_list escapes 0,
needs to save [1-9][0-9]* GPR units"
FAIL: gcc.dg/tree-ssa/stdarg-2.c scan-tree-dump stdarg "f14: va_list escapes 0,
needs to save [1-9][0-9]* GPR units"
FAIL: gcc.dg/tree-ssa/stdarg-4.c scan-tree-dump stdarg "f3: va_list escapes 0,
needs to save [148] GPR units"
FAIL: gcc.dg/tree-ssa/stdarg-4.c scan-tree-dump stdarg "f4: va_list escapes 0,
needs to save [148] GPR units"

For some reason, the _.stdarg dump has:

f1: va_list escapes 1, needs to save all GPR units and all FPR units.
f2: va_list escapes 1, needs to save all GPR units and all FPR units.
...