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| author | Eric Botcazou <ebotcazou@gcc.gnu.org> | 2014-11-13 11:44:26 +0000 |
|---|---|---|
| committer | Eric Botcazou <ebotcazou@gcc.gnu.org> | 2014-11-13 11:44:26 +0000 |
| commit | 95cc11e1634c8faa09ab161564a13c1ae9ec1794 (patch) | |
| tree | b67a9a798714bfddd396301579ee99f9e78e0b8f /gcc/doc/tm.texi | |
| parent | 187518942c654f1d144a76a262ba8a7b904f7b9d (diff) | |
| download | gcc-95cc11e1634c8faa09ab161564a13c1ae9ec1794.zip gcc-95cc11e1634c8faa09ab161564a13c1ae9ec1794.tar.gz gcc-95cc11e1634c8faa09ab161564a13c1ae9ec1794.tar.bz2 | |
tm.texi.in (SELECT_CC_MODE): Update example.
* doc/tm.texi.in (SELECT_CC_MODE): Update example.
(REVERSIBLE_CC_MODE): Fix example.
(REVERSE_CONDITION): Fix typo.
* doc/tm.texi: Regenerate.
From-SVN: r217476
Diffstat (limited to 'gcc/doc/tm.texi')
| -rw-r--r-- | gcc/doc/tm.texi | 16 |
1 files changed, 9 insertions, 7 deletions
diff --git a/gcc/doc/tm.texi b/gcc/doc/tm.texi index 33a5a97..8f708f6 100644 --- a/gcc/doc/tm.texi +++ b/gcc/doc/tm.texi @@ -5941,10 +5941,11 @@ for comparisons whose argument is a @code{plus}: @smallexample #define SELECT_CC_MODE(OP,X,Y) \ - (GET_MODE_CLASS (GET_MODE (X)) == MODE_FLOAT \ - ? ((OP == EQ || OP == NE) ? CCFPmode : CCFPEmode) \ - : ((GET_CODE (X) == PLUS || GET_CODE (X) == MINUS \ - || GET_CODE (X) == NEG) \ + (GET_MODE_CLASS (GET_MODE (X)) == MODE_FLOAT \ + ? ((OP == LT || OP == LE || OP == GT || OP == GE) \ + ? CCFPEmode : CCFPmode) \ + : ((GET_CODE (X) == PLUS || GET_CODE (X) == MINUS \ + || GET_CODE (X) == NEG || GET_CODE (x) == ASHIFT) \ ? CC_NOOVmode : CCmode)) @end smallexample @@ -5987,10 +5988,11 @@ then @code{REVERSIBLE_CC_MODE (@var{mode})} must be zero. You need not define this macro if it would always returns zero or if the floating-point format is anything other than @code{IEEE_FLOAT_FORMAT}. For example, here is the definition used on the SPARC, where floating-point -inequality comparisons are always given @code{CCFPEmode}: +inequality comparisons are given either @code{CCFPEmode} or @code{CCFPmode}: @smallexample -#define REVERSIBLE_CC_MODE(MODE) ((MODE) != CCFPEmode) +#define REVERSIBLE_CC_MODE(MODE) \ + ((MODE) != CCFPEmode && (MODE) != CCFPmode) @end smallexample @end defmac @@ -6000,7 +6002,7 @@ comparison done in CC_MODE @var{mode}. The macro is used only in case @code{REVERSIBLE_CC_MODE (@var{mode})} is nonzero. Define this macro in case machine has some non-standard way how to reverse certain conditionals. For instance in case all floating point conditions are non-trapping, compiler may -freely convert unordered compares to ordered one. Then definition may look +freely convert unordered compares to ordered ones. Then definition may look like: @smallexample |