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| author | law <law@138bc75d-0d04-0410-961f-82ee72b054a4> | 1999-08-28 05:41:44 +0000 |
|---|---|---|
| committer | law <law@138bc75d-0d04-0410-961f-82ee72b054a4> | 1999-08-28 05:41:44 +0000 |
| commit | aaa2446c620a039ccfb5fe2eb5031fa190451547 (patch) | |
| tree | c44b1ad675dbae1b4038cef72adb99304cf247e9 /gcc/cse.c | |
| parent | 4ea56225773c429c9ff1e5eaf8bc28e5441b5c7b (diff) | |
| download | gcc-aaa2446c620a039ccfb5fe2eb5031fa190451547.tar.gz | |
* cse.c (fold_rtx): Work around bug in Sun V5.0 compilers.
git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@28941 138bc75d-0d04-0410-961f-82ee72b054a4
Diffstat (limited to 'gcc/cse.c')
| -rw-r--r-- | gcc/cse.c | 9 |
1 files changed, 8 insertions, 1 deletions
diff --git a/gcc/cse.c b/gcc/cse.c index c39ab9f8522..7a13a7b2d24 100644 --- a/gcc/cse.c +++ b/gcc/cse.c @@ -5802,7 +5802,14 @@ fold_rtx (x, insn) hence not save anything) or be incorrect. */ if (const_arg1 != 0 && GET_CODE (const_arg1) == CONST_INT && INTVAL (const_arg1) < 0 - && - INTVAL (const_arg1) >= 0 + /* This used to test + + - INTVAL (const_arg1) >= 0 + + But The Sun V5.0 compilers mis-compiled that test. So + instead we test for the problematic value in a more direct + manner and hope the Sun compilers get it correct. */ + && INTVAL (const_arg1) != (1 << (HOST_BITS_PER_WIDE_INT - 1)) && GET_CODE (folded_arg1) == REG) { rtx new_const = GEN_INT (- INTVAL (const_arg1)); |