* final.c (output_in_slot): New global variable.

[pf3gnuchains/gcc-fork.git] / gcc / final.c

diff --git a/gcc/final.c b/gcc/final.c
index 5b67678..e1c0148 100644 (file)
--- a/gcc/final.c
+++ b/gcc/final.c
@@ -200,6 +200,10 @@ static int app_on;
 
 rtx final_sequence;
 
+/* True if we are outputting insns in a delay slot.  This is used
+   to prettify the assembly.  */
+static bool output_in_slot;
+
 #ifdef ASSEMBLER_DIALECT
 
 /* Number of the assembler dialect to use, starting at 0.  */
@@ -1663,8 +1667,11 @@ scan_ahead_for_unlikely_executed_note (rtx insn)
    is the insn being scanned.
    Value returned is the next insn to be scanned.
 
-   NOPEEPHOLES is the flag to disallow peephole processing (currently
-   used for within delayed branch sequence output).
+   NOPEEPHOLES is used to disallow peephole processing:
+    - 0: peepholes are allowed,
+    - 1: peepholes are not allowed,
+    - 2: peepholes are not allowed and we are in the
+         slot of a delayed branch.
 
    SEEN is used to track the end of the prologue, for emitting
    debug information.  We force the emission of a line note after
@@ -1674,8 +1681,7 @@ scan_ahead_for_unlikely_executed_note (rtx insn)
 
 rtx
 final_scan_insn (rtx insn, FILE *file, int optimize ATTRIBUTE_UNUSED,
-                int prescan, int nopeepholes ATTRIBUTE_UNUSED,
-                int *seen)
+                int prescan, int nopeepholes, int *seen)
 {
 #ifdef HAVE_cc0
   rtx set;
@@ -1699,8 +1705,6 @@ final_scan_insn (rtx insn, FILE *file, int optimize ATTRIBUTE_UNUSED,
        case NOTE_INSN_DELETED:
        case NOTE_INSN_LOOP_BEG:
        case NOTE_INSN_LOOP_END:
-       case NOTE_INSN_LOOP_CONT:
-       case NOTE_INSN_LOOP_VTOP:
        case NOTE_INSN_FUNCTION_END:
        case NOTE_INSN_REPEATED_LINE_NUMBER:
        case NOTE_INSN_EXPECTED_VALUE:
@@ -2197,7 +2201,7 @@ final_scan_insn (rtx insn, FILE *file, int optimize ATTRIBUTE_UNUSED,
                /* We loop in case any instruction in a delay slot gets
                   split.  */
                do
-                 insn = final_scan_insn (insn, file, 0, prescan, 1, seen);
+                 insn = final_scan_insn (insn, file, 0, prescan, 2, seen);
                while (insn != next);
              }
 #ifdef DBR_OUTPUT_SEQEND
@@ -2529,7 +2533,9 @@ final_scan_insn (rtx insn, FILE *file, int optimize ATTRIBUTE_UNUSED,
 #endif
 
        /* Output assembler code from the template.  */
+       output_in_slot = (nopeepholes > 1);
        output_asm_insn (template, recog_data.operand);
+       output_in_slot = false;
 
        /* If necessary, report the effect that the instruction has on
           the unwind info.   We've already done this for delay slots
@@ -2990,6 +2996,8 @@ output_asm_insn (const char *template, rtx *operands)
   memset (opoutput, 0, sizeof opoutput);
   p = template;
   putc ('\t', asm_out_file);
+  if (output_in_slot)
+    putc (' ', asm_out_file);
 
 #ifdef ASM_OUTPUT_OPCODE
   ASM_OUTPUT_OPCODE (asm_out_file, p);