patches/gcc/3.4.6/180-pr15068-fix.patch
author Thomas De Schampheleire <patrickdepinguin+buildroot@gmail.com>
Sat Jul 14 19:52:58 2012 +0200 (2012-07-14)
branch1.15
changeset 3005 740867bd81ca
parent 339 bd5e0a849352
permissions -rw-r--r--
kconfig: fix compatibility with older flex versions

Older flex versions require there be no space between options and
their arguments. For example '-P zconf' is not correct and should
be '-Pzconf'. This is for example the case for flex-2.5.4 shipped
with CentOS 5.8.

Signed-off-by: Thomas De Schampheleire <thomas.de.schampheleire@gmail.com>
Message-Id: <9652ce148bddc1def484.1339241000@beantl019720>
(transplanted from 7b1dda3ab07505bc1627d6fa70c60c7cd003eb3d)
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diff -durN gcc-3.4.6.orig/gcc/flow.c gcc-3.4.6/gcc/flow.c
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--- gcc-3.4.6.orig/gcc/flow.c	2005-09-01 22:51:09.000000000 +0200
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+++ gcc-3.4.6/gcc/flow.c	2007-08-15 23:00:30.000000000 +0200
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@@ -1884,6 +1884,7 @@
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 	  rtx set_src = SET_SRC (pc_set (BB_END (bb)));
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 	  rtx cond_true = XEXP (set_src, 0);
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 	  rtx reg = XEXP (cond_true, 0);
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+ 	  enum rtx_code inv_cond;
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 	  if (GET_CODE (reg) == SUBREG)
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 	    reg = SUBREG_REG (reg);
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@@ -1892,11 +1893,13 @@
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 	     in the form of a comparison of a register against zero.  
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 	     If the condition is more complex than that, then it is safe
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 	     not to record any information.  */
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-	  if (GET_CODE (reg) == REG
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+ 	  inv_cond = reversed_comparison_code (cond_true, BB_END (bb));
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+ 	  if (inv_cond != UNKNOWN
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+	      && GET_CODE (reg) == REG
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 	      && XEXP (cond_true, 1) == const0_rtx)
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 	    {
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 	      rtx cond_false
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-		= gen_rtx_fmt_ee (reverse_condition (GET_CODE (cond_true)),
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+		= gen_rtx_fmt_ee (inv_cond,
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 				  GET_MODE (cond_true), XEXP (cond_true, 0),
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 				  XEXP (cond_true, 1));
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 	      if (GET_CODE (XEXP (set_src, 1)) == PC)