On 16 May 2012 10:04, Michael Hope <michael.h...@linaro.org> wrote: > Hi Ramana. FYI, gcc trunk fails to bootstrap with: > > ../../../../gcc-4.8~/libgcc/libgcc2.c: In function '__mulvdi3': > ../../../../gcc-4.8~/libgcc/libgcc2.c:397:1: internal compiler error: > in df_uses_record, at df-scan.c:3179 > > A cross compiler fails when building EEMBC with: > > (insn 1166 1165 1167 155 (set (reg:CC 24 cc) > (compare:CC (reg:SI 2148 [ D.6766 ]) > (const_int 5000 [0x1388]))) iirflt01/bmark.c:501 -1 > (nil)) > iirflt01/bmark.c:1138:1: internal compiler error: in extract_insn, at > recog.c:2131
Here's a reduced testcase and an untested fix which is also upstream now at : http://gcc.gnu.org/bugzilla/show_bug.cgi?id=53376 * arm.md (movsicc): Adjust operands for the comparison. extern int x; static long long p; static long long *h1 ; static long long *h2 ; void foo (void) { int i ; for( i = 0 ; i < x ; i++ ) { if( (p >> 3) > 5000) p += 5000; *h2 = *h1 ; h2++; } } diff --git a/gcc/config/arm/arm.md b/gcc/config/arm/arm.md index b1ad3bf..04be822 100644 --- a/gcc/config/arm/arm.md +++ b/gcc/config/arm/arm.md @@ -8144,6 +8144,9 @@ if (code == UNEQ || code == LTGT) FAIL; + if (!arm_add_operand (XEXP (operands[1], 1), SImode)) + XEXP (operands[1], 1) = force_reg (SImode, XEXP (operands[1], 1)); + ccreg = arm_gen_compare_reg (code, XEXP (operands[1], 0), XEXP (operands[1], 1), NULL_RTX); operands[1] = gen_rtx_fmt_ee (code, VOIDmode, ccreg, const0_rtx); regards, Ramana > > The last revision that bootstrapped was 187203. 187223 and 187275 failed. > > -- Michael _______________________________________________ linaro-toolchain mailing list linaro-toolchain@lists.linaro.org http://lists.linaro.org/mailman/listinfo/linaro-toolchain
