|
|
copied from the crosstool project (0.38) - see http://kegel.com/crosstool/- stf
See http://gcc.gnu.org/PR15068
Fixes error
../sysdeps/generic/s_fmax.c: In function `__fmax':../sysdeps/generic/s_fmax.c:28: internal compiler error: in elim_reg_cond, at flow.c:3257Please submit a full bug report,with preprocessed source if appropriate.See <URL:http://gcc.gnu.org/bugs.html> for instructions.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 1make[2]: Leaving directory `/home/dank/wk/crosstool-0.28-rc35/build/arm-unknown-linux-gnu/gcc-3.4.1-glibc-20040822/glibc-20040822/math'make[1]: *** [math/others] Error 2make[1]: Leaving directory `/home/dank/wk/crosstool-0.28-rc35/build/arm-unknown-linux-gnu/gcc-3.4.1-glibc-20040822/glibc-20040822'make: *** [all] Error 2
[ rediffed against gcc-3.4.1, with elbow grease, ending up with same thing ashttp://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 ]
--- gcc-3.4.1/gcc/flow.c.old 2004-02-27 19:39:19.000000000 -0800
+++ gcc-3.4.1/gcc/flow.c 2004-08-26 07:29:46.000000000 -0700
@@ -1878,6 +1878,7 @@
rtx set_src = SET_SRC (pc_set (BB_END (bb))); rtx cond_true = XEXP (set_src, 0); rtx reg = XEXP (cond_true, 0);+ enum rtx_code inv_cond;
if (GET_CODE (reg) == SUBREG) reg = SUBREG_REG (reg);@@ -1886,11 +1887,13 @@
in the form of a comparison of a register against zero. If the condition is more complex than that, then it is safe not to record any information. */- if (GET_CODE (reg) == REG
+ inv_cond = reversed_comparison_code (cond_true, BB_END (bb));
+ if (inv_cond != UNKNOWN
+ && GET_CODE (reg) == REG
&& XEXP (cond_true, 1) == const0_rtx) { rtx cond_false- = gen_rtx_fmt_ee (reverse_condition (GET_CODE (cond_true)),
+ = gen_rtx_fmt_ee (inv_cond,
GET_MODE (cond_true), XEXP (cond_true, 0), XEXP (cond_true, 1)); if (GET_CODE (XEXP (set_src, 1)) == PC)
|
