(reg_unused_after): Return 0 if see a JUMP_INSN.

From-SVN: r11501

diff --git a/gcc/config/sh/sh.c b/gcc/config/sh/sh.c
index 144a5b0..cae782a 100644 (file)
--- a/gcc/config/sh/sh.c
+++ b/gcc/config/sh/sh.c
@@ -2338,7 +2338,7 @@ fp_one_operand (op)
 \f
 /* Return non-zero if REG is not used after INSN.
    We assume REG is a reload reg, and therefore does
-   not live past labels or calls or jumps.  */
+   not live past labels.  It may live past calls or jumps though.  */
 int
 reg_unused_after (reg, insn)
      rtx reg;
@@ -2369,11 +2369,14 @@ reg_unused_after (reg, insn)
       /* else */
 #endif
 
+      if (code == JUMP_INSN)
+       return 0;
+
       /* If this is a sequence, we must handle them all at once.
         We could have for instance a call that sets the target register,
         and a insn in a delay slot that uses the register.  In this case,
         we must return 0.  */
-      if (code == INSN && GET_CODE (PATTERN (insn)) == SEQUENCE)
+      else if (code == INSN && GET_CODE (PATTERN (insn)) == SEQUENCE)
        {
          int i;
          int retval = 0;