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| author | rsandifo <rsandifo@138bc75d-0d04-0410-961f-82ee72b054a4> | 2008-11-11 23:24:05 +0000 |
|---|---|---|
| committer | rsandifo <rsandifo@138bc75d-0d04-0410-961f-82ee72b054a4> | 2008-11-11 23:24:05 +0000 |
| commit | 7c870f2d3a011438b322819546ef20a6e7b3dff3 (patch) | |
| tree | 38ac169b3596562fdc6d9f6cf21db58786279300 /gcc/cse.c | |
| parent | a0d18b2b1b31f806f2d9f164e6eb26f2c0eb7b63 (diff) | |
| download | gcc-7c870f2d3a011438b322819546ef20a6e7b3dff3.tar.gz | |
gcc/
* cse.c (fold_rtx): Remove redundant gen_rtx_CONST.
git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@141775 138bc75d-0d04-0410-961f-82ee72b054a4
Diffstat (limited to 'gcc/cse.c')
| -rw-r--r-- | gcc/cse.c | 18 |
1 files changed, 0 insertions, 18 deletions
diff --git a/gcc/cse.c b/gcc/cse.c index ed7d8856439..e6ff6308c2a 100644 --- a/gcc/cse.c +++ b/gcc/cse.c @@ -3171,33 +3171,15 @@ fold_rtx (rtx x, rtx insn) { case RTX_UNARY: { - int is_const = 0; - /* We can't simplify extension ops unless we know the original mode. */ if ((code == ZERO_EXTEND || code == SIGN_EXTEND) && mode_arg0 == VOIDmode) break; - /* If we had a CONST, strip it off and put it back later if we - fold. */ - if (const_arg0 != 0 && GET_CODE (const_arg0) == CONST) - is_const = 1, const_arg0 = XEXP (const_arg0, 0); - new_rtx = simplify_unary_operation (code, mode, const_arg0 ? const_arg0 : folded_arg0, mode_arg0); - /* NEG of PLUS could be converted into MINUS, but that causes - expressions of the form - (CONST (MINUS (CONST_INT) (SYMBOL_REF))) - which many ports mistakenly treat as LEGITIMATE_CONSTANT_P. - FIXME: those ports should be fixed. */ - if (new_rtx != 0 && is_const - && GET_CODE (new_rtx) == PLUS - && (GET_CODE (XEXP (new_rtx, 0)) == SYMBOL_REF - || GET_CODE (XEXP (new_rtx, 0)) == LABEL_REF) - && GET_CODE (XEXP (new_rtx, 1)) == CONST_INT) - new_rtx = gen_rtx_CONST (mode, new_rtx); } break; |