(record_dead_and_set_regs_1): Can only handle SUBREG

if the register is smaller or equal to BITS_PER_WORD. From-SVN: r7749

(record_dead_and_set_regs_1): Can only handle SUBREG
if the register is smaller or equal to BITS_PER_WORD. From-SVN: r7749
90bf8081 · Jim Wilson · 7947717f · 90bf8081
Commit 90bf8081 authored Jul 12, 1994 by Jim Wilson
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gcc/combine.c
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--- a/gcc/combine.c
+++ b/gcc/combine.c
@@ -9646,6 +9646,7 @@ record_dead_and_set_regs_1 (dest, setter)
      else if (GET_CODE (setter) == SET
 	       && GET_CODE (SET_DEST (setter)) == SUBREG
 	       && SUBREG_REG (SET_DEST (setter)) == dest
+	       && GET_MODE_BITSIZE (GET_MODE (dest)) <= BITS_PER_WORD
 	       && subreg_lowpart_p (SET_DEST (setter)))
 	record_value_for_reg (dest, record_dead_insn,
 			      gen_lowpart_for_combine (GET_MODE (dest),