combine.c (combine_simplify_rtx): Don't pass VOIDmode to…

combine.c (combine_simplify_rtx): Don't pass VOIDmode to simplify_unary_operation if the operand has a known mode. * combine.c (combine_simplify_rtx): Don't pass VOIDmode to simplify_unary_operation if the operand has a known mode. From-SVN: r75709

combine.c (combine_simplify_rtx): Don't pass VOIDmode to…
combine.c (combine_simplify_rtx): Don't pass VOIDmode to simplify_unary_operation if the operand has a known mode. * combine.c (combine_simplify_rtx): Don't pass VOIDmode to simplify_unary_operation if the operand has a known mode. From-SVN: r75709
c0657872 · Richard Sandiford · Richard Sandiford · d2288d5d · c0657872 · c0657872
Commit c0657872 authored Jan 12, 2004 by Richard Sandiford Committed by Richard Sandiford Jan 12, 2004
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gcc/combine.c
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--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
+2004-01-12  Richard Sandiford  <rsandifo@redhat.com>
+
+	* combine.c (combine_simplify_rtx): Don't pass VOIDmode to
+	simplify_unary_operation if the operand has a known mode.
+
 2004-01-12  Hartmut Penner  <hpenner@de.ibm.com>

 	* gcc/config/rs6000/rs6000.c (word_offset_memref_operand): New

--- a/gcc/combine.c
+++ b/gcc/combine.c
@@ -3690,6 +3690,8 @@ combine_simplify_rtx (rtx x, enum machine_mode op0_mode, int last,
  switch (GET_RTX_CLASS (code))
    {
    case '1':
+      if (op0_mode == VOIDmode)
+	op0_mode = GET_MODE (XEXP (x, 0));
      temp = simplify_unary_operation (code, mode, XEXP (x, 0), op0_mode);
      break;
    case '<':