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| author | Roger Sayle <roger@eyesopen.com> | 2002-08-31 17:49:00 +0000 |
|---|---|---|
| committer | Hans-Peter Nilsson <hp@gcc.gnu.org> | 2002-08-31 17:49:00 +0000 |
| commit | c8ffe46fdaac758fb93f6c9d306b88ade38fc769 (patch) | |
| tree | bc7a229594d9934daa8b3425ab32be407ae6dc51 | |
| parent | 39abf68d8c37930a4b563f1a48b6b0123d40f472 (diff) | |
| download | gcc-c8ffe46fdaac758fb93f6c9d306b88ade38fc769.zip gcc-c8ffe46fdaac758fb93f6c9d306b88ade38fc769.tar.gz gcc-c8ffe46fdaac758fb93f6c9d306b88ade38fc769.tar.bz2 | |
20020720-1.x: Skip test on mmix-knuth-mmixware.
* gcc.c-torture/execute/20020720-1.x: Skip test on
mmix-knuth-mmixware. Correct comment.
Co-Authored-By: Hans-Peter Nilsson <hp@bitrange.com>
From-SVN: r56708
| -rw-r--r-- | gcc/testsuite/ChangeLog | 6 | ||||
| -rw-r--r-- | gcc/testsuite/gcc.c-torture/execute/20020720-1.x | 18 |
2 files changed, 16 insertions, 8 deletions
diff --git a/gcc/testsuite/ChangeLog b/gcc/testsuite/ChangeLog index 3f3a17d..8369762 100644 --- a/gcc/testsuite/ChangeLog +++ b/gcc/testsuite/ChangeLog @@ -1,3 +1,9 @@ +2002-08-31 Roger Sayle <roger@eyesopen.com> + Hans-Peter Nilsson <hp@bitrange.com> + + * gcc.c-torture/execute/20020720-1.x: Skip test on + mmix-knuth-mmixware. Correct comment. + 2002-08-27 Mark Mitchell <mark@codesourcery.com> * testsuite/g++.dg/abi/bitfield5.C: New test. diff --git a/gcc/testsuite/gcc.c-torture/execute/20020720-1.x b/gcc/testsuite/gcc.c-torture/execute/20020720-1.x index 6534217..4cf53d0 100644 --- a/gcc/testsuite/gcc.c-torture/execute/20020720-1.x +++ b/gcc/testsuite/gcc.c-torture/execute/20020720-1.x @@ -1,15 +1,17 @@ # The following targets fail 20020720-1.c for several reasons: # (1) They implement floating point instructions via software, or -# (2) Their machine descriptions obfuscate the "abs(x) < 0.0" comparison. -# For example, 1 insn performs abs, 1 insn loads 0.0, 1 insn sets -# CCmode flags based upon the FP comparison, and a 4th insn makes -# a conditional branch based upon the appropriate bits in the flags. -# If the intermediate comparison can't be recognized, the combiner -# is unable to optimize all four RTL instructions simultaneously. - +# (2) The "abs(x) < 0.0" comparison is split up in too many intermediate +# insns for combine to handle -- it can handle max three insns +# simultaneously. For example, for RISCy machines it is common that 1 +# insn performs abs, 1 insn loads 0.0, 1 insn sets CCmode flags based +# upon the FP comparison, and a 4th insn makes a conditional branch +# based upon the appropriate bits in the flags. On the other hand, if +# for example the comparison insn takes 0.0 as an operand, the +# combiner is able to see all intermediate instructions simultaneously +# and can make the optimization. if { [istarget "powerpc-*-*"] || [istarget "rs6000-*-*"] \ || [istarget "mips*-*-*"] || [istarget "xtensa-*-*"] \ - || [istarget "sh-*-*"] } { + || [istarget "sh-*-*"] || [istarget "mmix-*-*"] } { return 1 } |