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| author | Roger Sayle <roger@eyesopen.com> | 2003-10-06 23:18:31 +0000 |
|---|---|---|
| committer | Roger Sayle <sayle@gcc.gnu.org> | 2003-10-06 23:18:31 +0000 |
| commit | 3a627503d6aa79272846a53fc33f8cf3b82f3284 (patch) | |
| tree | bbd520b2a2c9caf1c3a9717cfe855fd3e0c43e5a | |
| parent | c37b68d42af9dfe0561541be06879f6cdb0f0532 (diff) | |
| download | gcc-3a627503d6aa79272846a53fc33f8cf3b82f3284.zip gcc-3a627503d6aa79272846a53fc33f8cf3b82f3284.tar.gz gcc-3a627503d6aa79272846a53fc33f8cf3b82f3284.tar.bz2 | |
i386.c (ix86_expand_setcc): Annotate the floating point comparison sequence with a REG_EQUAL note that...
* config/i386/i386.c (ix86_expand_setcc): Annotate the floating
point comparison sequence with a REG_EQUAL note that describes
the comparison's semantics.
From-SVN: r72173
| -rw-r--r-- | gcc/ChangeLog | 6 | ||||
| -rw-r--r-- | gcc/config/i386/i386.c | 8 |
2 files changed, 13 insertions, 1 deletions
diff --git a/gcc/ChangeLog b/gcc/ChangeLog index b0a81bc..cbd783f 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -1,5 +1,11 @@ 2003-10-06 Roger Sayle <roger@eyesopen.com> + * config/i386/i386.c (ix86_expand_setcc): Annotate the floating + point comparison sequence with a REG_EQUAL note that describes + the comparison's semantics. + +2003-10-06 Roger Sayle <roger@eyesopen.com> + * expr.c (expand_expr <COND_EXPR>): Handle the void type semantics of COND_EXPR when expanding the "A op 0 ? FOO : A" optimizations. diff --git a/gcc/config/i386/i386.c b/gcc/config/i386/i386.c index 1c606df..67285f9 100644 --- a/gcc/config/i386/i386.c +++ b/gcc/config/i386/i386.c @@ -9334,7 +9334,7 @@ ix86_split_fp_branch (enum rtx_code code, rtx op1, rtx op2, int ix86_expand_setcc (enum rtx_code code, rtx dest) { - rtx ret, tmp, tmpreg; + rtx ret, tmp, tmpreg, equiv; rtx second_test, bypass_test; if (GET_MODE (ix86_compare_op0) == DImode @@ -9373,6 +9373,12 @@ ix86_expand_setcc (enum rtx_code code, rtx dest) emit_insn (gen_iorqi3 (tmp, tmpreg, tmp2)); } + /* Attach a REG_EQUAL note describing the comparison result. */ + equiv = simplify_gen_relational (code, QImode, + GET_MODE (ix86_compare_op0), + ix86_compare_op0, ix86_compare_op1); + set_unique_reg_note (get_last_insn (), REG_EQUAL, equiv); + return 1; /* DONE */ } |