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yann@339
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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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yann@339
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--- gcc-3.4.6.orig/gcc/flow.c 2005-09-01 22:51:09.000000000 +0200
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yann@339
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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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yann@339
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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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yann@339
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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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yann@339
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GET_MODE (cond_true), XEXP (cond_true, 0),
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XEXP (cond_true, 1));
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yann@339
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if (GET_CODE (XEXP (set_src, 1)) == PC)
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