[Bug target/15822] New: Several alpha testsuite regressions: gcc.c-torture/execute/ieee/fp-cmp-[458].c

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

I noticed a couple of new testsuite failures (some of which are
regressions) on alpha-dec-osf5.1b between 20040524 and 20040601:

+FAIL: gcc.c-torture/execute/compare-fp-1.c execution,  -O0 
+FAIL: gcc.c-torture/execute/compare-fp-1.c execution,  -O1 
+FAIL: gcc.c-torture/execute/compare-fp-1.c execution,  -O2 
+FAIL: gcc.c-torture/execute/compare-fp-1.c compilation,  -O3 -fomit-frame-pointer 
+UNRESOLVED: gcc.c-torture/execute/compare-fp-1.c execution,  -O3 -fomit-frame-pointer 
+FAIL: gcc.c-torture/execute/compare-fp-1.c compilation,  -O3 -g 
+UNRESOLVED: gcc.c-torture/execute/compare-fp-1.c execution,  -O3 -g 
+FAIL: gcc.c-torture/execute/compare-fp-1.c execution,  -Os 
+FAIL: gcc.c-torture/execute/compare-fp-4.c execution,  -O0 
+FAIL: gcc.c-torture/execute/compare-fp-4.c execution,  -O1 
+FAIL: gcc.c-torture/execute/compare-fp-4.c execution,  -O2 
+FAIL: gcc.c-torture/execute/compare-fp-4.c execution,  -O3 -fomit-frame-pointer 
+FAIL: gcc.c-torture/execute/compare-fp-4.c execution,  -O3 -g 
+FAIL: gcc.c-torture/execute/compare-fp-4.c execution,  -Os 

+FAIL: gcc.c-torture/execute/ieee/fp-cmp-4.c execution,  -O0 
+FAIL: gcc.c-torture/execute/ieee/fp-cmp-4.c execution,  -O1 
+FAIL: gcc.c-torture/execute/ieee/fp-cmp-4.c execution,  -O2 
+FAIL: gcc.c-torture/execute/ieee/fp-cmp-4.c execution,  -O3 -fomit-frame-pointer 
+FAIL: gcc.c-torture/execute/ieee/fp-cmp-4.c execution,  -O3 -fomit-frame-pointer -funroll-loops 
+FAIL: gcc.c-torture/execute/ieee/fp-cmp-4.c execution,  -O3 -fomit-frame-pointer -funroll-all-loops -finline-functions 
+FAIL: gcc.c-torture/execute/ieee/fp-cmp-4.c execution,  -O3 -g 
+FAIL: gcc.c-torture/execute/ieee/fp-cmp-4.c execution,  -Os 
+FAIL: gcc.c-torture/execute/ieee/fp-cmp-5.c execution,  -O0 
+FAIL: gcc.c-torture/execute/ieee/fp-cmp-5.c execution,  -O1 
+FAIL: gcc.c-torture/execute/ieee/fp-cmp-5.c execution,  -O2 
+FAIL: gcc.c-torture/execute/ieee/fp-cmp-5.c execution,  -O3 -fomit-frame-pointer 
+FAIL: gcc.c-torture/execute/ieee/fp-cmp-5.c execution,  -O3 -fomit-frame-pointer -funroll-loops 
+FAIL: gcc.c-torture/execute/ieee/fp-cmp-5.c execution,  -O3 -fomit-frame-pointer -funroll-all-loops -finline-functions 
+FAIL: gcc.c-torture/execute/ieee/fp-cmp-5.c execution,  -O3 -g 
+FAIL: gcc.c-torture/execute/ieee/fp-cmp-5.c execution,  -Os 
+FAIL: gcc.c-torture/execute/ieee/fp-cmp-8.c execution,  -O0 
+FAIL: gcc.c-torture/execute/ieee/fp-cmp-8.c execution,  -O1 
+FAIL: gcc.c-torture/execute/ieee/fp-cmp-8.c execution,  -O2 
+FAIL: gcc.c-torture/execute/ieee/fp-cmp-8.c execution,  -O3 -fomit-frame-pointer 
+FAIL: gcc.c-torture/execute/ieee/fp-cmp-8.c execution,  -O3 -fomit-frame-pointer -funroll-loops 
+FAIL: gcc.c-torture/execute/ieee/fp-cmp-8.c execution,  -O3 -fomit-frame-pointer -funroll-all-loops -finline-functions 
+FAIL: gcc.c-torture/execute/ieee/fp-cmp-8.c execution,  -O3 -g 
+FAIL: gcc.c-torture/execute/ieee/fp-cmp-8.c execution,  -Os 

While the compare-fp-[14].c tests are new, the fp-cmp-[458].c tests used to
pass.  This can also be obverved on alphaev67-unknown-linux-gnu and was
introduced between

http://gcc.gnu.org/ml/gcc-testresults/2004-05/msg01301.html (20040528)

and

http://gcc.gnu.org/ml/gcc-testresults/2004-05/msg01335.html (20040529)

>From the ChangeLog, most likely this patch (which introduced the new
failing tests above) is the culprit:

2004-05-28  Paolo Bonzini  <bonzini@gnu.org>
	    Roger Sayle  <roger@eyesopen.com>

	PR rtl-optimization/15649
	Add LTGT_EXPR and improve pretty-printing of unordered
	comparisons.

Environment:
System: OSF1 bartok V5.1 2650 alpha
Machine: alpha
	
host: alpha-dec-osf5.1b
build: alpha-dec-osf5.1b
target: alpha-dec-osf5.1b
configured with: /vol/gnu/src/gcc/gcc-dist/configure --prefix=/vol/gcc --with-local-prefix=/vol/gcc --disable-nls --host alpha-dec-osf5.1b --build alpha-dec-osf5.1b --target alpha-dec-osf5.1b --disable-libmudflap

How-To-Repeat:
Bootstrap and regtest mainline on any alpha target.

-- 
           Summary: Several alpha testsuite regressions: gcc.c-
                    torture/execute/ieee/fp-cmp-[458].c
           Product: gcc
           Version: 3.5.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: target
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: ro at techfak dot uni-bielefeld dot de
                CC: gcc-bugs at gcc dot gnu dot org
 GCC build triplet: alpha-dec-osf5.1b
  GCC host triplet: alpha-dec-osf5.1b
GCC target triplet: alpha-dec-osf5.1b


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=15822