| 1 | See http://gcc.gnu.org/PR15068 |
| 2 | |
| 3 | Fixes error |
| 4 | |
| 5 | ../sysdeps/generic/s_fmax.c: In function `__fmax': |
| 6 | ../sysdeps/generic/s_fmax.c:28: internal compiler error: in elim_reg_cond, at flow.c:3257 |
| 7 | Please submit a full bug report, |
| 8 | with preprocessed source if appropriate. |
| 9 | See <URL:http://gcc.gnu.org/bugs.html> for instructions. |
| 10 | 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 |
| 11 | 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' |
| 12 | make[1]: *** [math/others] Error 2 |
| 13 | make[1]: Leaving directory `/home/dank/wk/crosstool-0.28-rc35/build/arm-unknown-linux-gnu/gcc-3.4.1-glibc-20040822/glibc-20040822' |
| 14 | make: *** [all] Error 2 |
| 15 | |
| 16 | [ rediffed against gcc-3.4.1, with elbow grease, ending up with same thing as |
| 17 | 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 ] |
| 18 | |
| 19 | --- gcc-3.4.1/gcc/flow.c.old 2004-02-27 19:39:19.000000000 -0800 |
| 20 | +++ gcc-3.4.1/gcc/flow.c 2004-08-26 07:29:46.000000000 -0700 |
| 21 | @@ -1878,6 +1878,7 @@ |
| 22 | rtx set_src = SET_SRC (pc_set (BB_END (bb))); |
| 23 | rtx cond_true = XEXP (set_src, 0); |
| 24 | rtx reg = XEXP (cond_true, 0); |
| 25 | + enum rtx_code inv_cond; |
| 26 | |
| 27 | if (GET_CODE (reg) == SUBREG) |
| 28 | reg = SUBREG_REG (reg); |
| 29 | @@ -1886,11 +1887,13 @@ |
| 30 | in the form of a comparison of a register against zero. |
| 31 | If the condition is more complex than that, then it is safe |
| 32 | not to record any information. */ |
| 33 | - if (GET_CODE (reg) == REG |
| 34 | + inv_cond = reversed_comparison_code (cond_true, BB_END (bb)); |
| 35 | + if (inv_cond != UNKNOWN |
| 36 | + && GET_CODE (reg) == REG |
| 37 | && XEXP (cond_true, 1) == const0_rtx) |
| 38 | { |
| 39 | rtx cond_false |
| 40 | - = gen_rtx_fmt_ee (reverse_condition (GET_CODE (cond_true)), |
| 41 | + = gen_rtx_fmt_ee (inv_cond, |
| 42 | GET_MODE (cond_true), XEXP (cond_true, 0), |
| 43 | XEXP (cond_true, 1)); |
| 44 | if (GET_CODE (XEXP (set_src, 1)) == PC) |
| 45 | |
