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944e5f77 · Richard Stallman · a4219ac7 · 944e5f77
Commit 944e5f77 authored Jun 29, 1992 by Richard Stallman
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gcc/flow.c
+3 -2

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--- a/gcc/flow.c
+++ b/gcc/flow.c
@@ -1628,13 +1628,14 @@ libcall_dead_p (x, needed, note, insn)
 }

 /* Return 1 if register REGNO was used before it was set.
-   In other words, if it is live at function entry.  */
+   In other words, if it is live at function entry.
+   Don't count global regster variables, though.  */

 int
 regno_uninitialized (regno)
     int regno;
 {
-  if (n_basic_blocks == 0)
+  if (n_basic_blocks == 0 || global_regs[regno])
    return 0;

  return (basic_block_live_at_start[0][regno / REGSET_ELT_BITS]