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@ -0,0 +1,47 @@ |
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copied from the crosstool project (0.38) - see http://kegel.com/crosstool/ |
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- stf
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See http://gcc.gnu.org/PR15068 |
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Fixes error |
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../sysdeps/generic/s_fmax.c: In function `__fmax': |
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../sysdeps/generic/s_fmax.c:28: internal compiler error: in elim_reg_cond, at flow.c:3257 |
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Please submit a full bug report, |
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with preprocessed source if appropriate. |
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See <URL:http://gcc.gnu.org/bugs.html> for instructions. |
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make[2]: *** [/home/dank/wk/crosstool-0.28-rc35/build/arm-unknown-linux-gnu/gcc-3.4.1-glibc-20040822/build-glibc/math/s_fmax.o] Error 1 |
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make[2]: Leaving directory `/home/dank/wk/crosstool-0.28-rc35/build/arm-unknown-linux-gnu/gcc-3.4.1-glibc-20040822/glibc-20040822/math' |
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make[1]: *** [math/others] Error 2 |
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make[1]: Leaving directory `/home/dank/wk/crosstool-0.28-rc35/build/arm-unknown-linux-gnu/gcc-3.4.1-glibc-20040822/glibc-20040822' |
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make: *** [all] Error 2 |
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[ rediffed against gcc-3.4.1, with elbow grease, ending up with same thing as |
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http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/flow.c.diff?cvsroot=gcc&only_with_tag=csl-arm-branch&r1=1.563.4.2&r2=1.563.4.3 ] |
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--- gcc-3.4.1/gcc/flow.c.old 2004-02-27 19:39:19.000000000 -0800
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+++ gcc-3.4.1/gcc/flow.c 2004-08-26 07:29:46.000000000 -0700
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@@ -1878,6 +1878,7 @@
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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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@@ -1886,11 +1887,13 @@
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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) |
Stefan Fiedler
19 years ago