As suggested here:

http://gcc.gnu.org/ml/gcc-patches/2012-10/msg00283.html

The following are committed as obvious / trivial:
	* config/rs6000/predicates.md (zero_fp_constant): Fix comment.
	* config/rs6000/rs6000.md (return_pred): Fix null return.
	* config/rs6000/rs6000.c (rs6000_emit_set_const): Fix indentation.
	(print_operand): Make FALLTHRU obvious.
	(output_cbranch): Correct comment.



git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@192373 138bc75d-0d04-0410-961f-82ee72b054a4

3 files changed, 6 insertions, 8 deletions

diff --git a/gcc/config/rs6000/predicates.md b/gcc/config/rs6000/predicates.md
index 12b75275a32..99130ba6eef 100644
--- a/gcc/config/rs6000/predicates.md
+++ b/gcc/config/rs6000/predicates.md
@@ -490,7 +490,6 @@
        (match_test "op == CONST0_RTX (mode)")))
 
 ;; Return 1 if operand is 0.0.
-;; or non-special register register field no cr0
 (define_predicate "zero_fp_constant"
   (and (match_code "const_double")
        (match_test "SCALAR_FLOAT_MODE_P (mode)
diff --git a/gcc/config/rs6000/rs6000.c b/gcc/config/rs6000/rs6000.c
index ced06508e87..b6f3a9c9407 100644
--- a/gcc/config/rs6000/rs6000.c
+++ b/gcc/config/rs6000/rs6000.c
@@ -6751,7 +6751,7 @@ rs6000_emit_set_const (rtx dest, enum machine_mode mode,
 
   switch (mode)
     {
-      case  QImode:
+    case  QImode:
     case HImode:
       if (dest == NULL)
 	dest = gen_reg_rtx (mode);
@@ -14990,11 +14990,10 @@ print_operand (FILE *file, rtx x, int code)
       return;
 
     case 'Q':
-      if (TARGET_MFCRF)
-	fputc (',', file);
-        /* FALLTHRU */
-      else
+      if (! TARGET_MFCRF)
 	return;
+      fputc (',', file);
+      /* FALLTHRU */
 
     case 'R':
       /* X is a CR register.  Print the mask for `mtcrf'.  */
@@ -15939,7 +15938,7 @@ rs6000_emit_cbranch (enum machine_mode mode, rtx operands[])
 }
 
 /* Return the string to output a conditional branch to LABEL, which is
-   the operand number of the label, or -1 if the branch is really a
+   the operand template of the label, or NULL if the branch is really a
    conditional return.
 
    OP is the conditional expression.  XEXP (OP, 0) is assumed to be a
diff --git a/gcc/config/rs6000/rs6000.md b/gcc/config/rs6000/rs6000.md
index 4265cb67b0f..96f4f6a8321 100644
--- a/gcc/config/rs6000/rs6000.md
+++ b/gcc/config/rs6000/rs6000.md
@@ -266,7 +266,7 @@
 ; Conditional returns.
 (define_code_iterator any_return [return simple_return])
 (define_code_attr return_pred [(return "direct_return ()")
-			       (simple_return "")])
+			       (simple_return "1")])
 (define_code_attr return_str [(return "") (simple_return "simple_")])
 
 ; Various instructions that come in SI and DI forms.