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| author | Julian Brown <julian@codesourcery.com> | 2011-08-01 11:46:27 +0000 |
|---|---|---|
| committer | Julian Brown <jules@gcc.gnu.org> | 2011-08-01 11:46:27 +0000 |
| commit | f64398b59c1aaeeae30a5cbd65ba2cbdc69b4dc8 (patch) | |
| tree | cf7132d9195abf40c4caff6c21af115100b1baf3 | |
| parent | 857ade1b5ac9928145759c763059b7eda3d6739a (diff) | |
| download | gcc-f64398b59c1aaeeae30a5cbd65ba2cbdc69b4dc8.zip gcc-f64398b59c1aaeeae30a5cbd65ba2cbdc69b4dc8.tar.gz gcc-f64398b59c1aaeeae30a5cbd65ba2cbdc69b4dc8.tar.bz2 | |
optabs.c (prepare_cmp_insn): Use correct biasing for fixed-point comparison helpers.
* optabs.c (prepare_cmp_insn): Use correct biasing for fixed-point
comparison helpers.
From-SVN: r177015
| -rw-r--r-- | gcc/ChangeLog | 5 | ||||
| -rw-r--r-- | gcc/optabs.c | 6 |
2 files changed, 9 insertions, 2 deletions
diff --git a/gcc/ChangeLog b/gcc/ChangeLog index 8bb0898..da6e982 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -1,3 +1,8 @@ +2011-08-01 Julian Brown <julian@codesourcery.com> + + * optabs.c (prepare_cmp_insn): Use correct biasing for fixed-point + comparison helpers. + 2011-07-31 Richard Henderson <rth@redhat.com> * config/h8300/crti.asm: Add flags to .section directive. diff --git a/gcc/optabs.c b/gcc/optabs.c index 12717b6..99228f3 100644 --- a/gcc/optabs.c +++ b/gcc/optabs.c @@ -3959,11 +3959,13 @@ prepare_cmp_insn (rtx x, rtx y, enum rtx_code comparison, rtx size, result against 1 in the biased case, and zero in the unbiased case. For unsigned comparisons always compare against 1 after biasing the unbiased result by adding 1. This gives us a way to - represent LTU. */ + represent LTU. + The comparisons in the fixed-point helper library are always + biased. */ x = result; y = const1_rtx; - if (!TARGET_LIB_INT_CMP_BIASED) + if (!TARGET_LIB_INT_CMP_BIASED && !ALL_FIXED_POINT_MODE_P (mode)) { if (unsignedp) x = plus_constant (result, 1); |