[Bug rtl-optimization/27437] New: [4.2 Regression]: -O3 regression due to SEE

[hjl at lucon dot org]

The new SEE pass is turned on by -O3, which introduces several regressions on
Linux/x86 and probably on Linux/x86-64:

http://gcc.gnu.org/ml/gcc-testresults/2006-05/msg00171.html

shows

FAIL: gcc.c-torture/compile/pr20539-1.c  -O3 -fomit-frame-pointer  (test for
excess errors)
FAIL: gcc.c-torture/compile/pr20539-1.c  -O3 -g  (test for excess errors)
FAIL: gcc.c-torture/execute/20050121-1.c compilation,  -O3 -fomit-frame-pointer 
UNRESOLVED: gcc.c-torture/execute/20050121-1.c execution,  -O3
-fomit-frame-pointer 
FAIL: gcc.c-torture/execute/20050121-1.c compilation,  -O3 -g 
UNRESOLVED: gcc.c-torture/execute/20050121-1.c execution,  -O3 -g 
FAIL: gcc.c-torture/execute/930603-3.c compilation,  -O3 -fomit-frame-pointer 
UNRESOLVED: gcc.c-torture/execute/930603-3.c execution,  -O3
-fomit-frame-pointer 
FAIL: gcc.c-torture/execute/930603-3.c compilation,  -O3 -g 
UNRESOLVED: gcc.c-torture/execute/930603-3.c execution,  -O3 -g 
FAIL: gcc.c-torture/execute/arith-rand-ll.c compilation,  -O3
-fomit-frame-pointer 
UNRESOLVED: gcc.c-torture/execute/arith-rand-ll.c execution,  -O3
-fomit-frame-pointer 
FAIL: gcc.c-torture/execute/arith-rand-ll.c compilation,  -O3 -g 
UNRESOLVED: gcc.c-torture/execute/arith-rand-ll.c execution,  -O3 -g 
FAIL: gcc.c-torture/unsorted/udivmod4.c,  -O3 -fomit-frame-pointer  
FAIL: gcc.c-torture/unsorted/udivmod4.c,  -O3 -g

which aren't in

http://gcc.gnu.org/ml/gcc-testresults/2006-05/msg00073.html


-- 
           Summary: [4.2 Regression]: -O3 regression due to SEE
           Product: gcc
           Version: 4.2.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: rtl-optimization
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: hjl at lucon dot org
 GCC build triplet: i686-pc-linux-gnu
  GCC host triplet: i686-pc-linux-gnu
GCC target triplet: i686-pc-linux-gnu


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=27437