On 09/04/2017 08:21 AM, Segher Boessenkool wrote: > Hi, > > On Mon, Sep 04, 2017 at 06:36:25AM -0500, vikram1729 wrote: >> We are building GCC 4.1.2 cross toolchain for our custom processor in 64 bit >> OS environment. Our custom processor is 32 bit. We faced with the following >> ICE. This error did not come in 32 bit OS environment and toolchain build >> successfully. > > That compiler is over ten years old. You might want to upgrade ;-) > >> t.c:3: error: unrecognizable insn: >> (insn 22 21 23 (set:SI (reg:SI 19 r19) >> (lo_sum:SI (reg:SI 19 r19) >> (const_int 4294967280 [0xfffffff0]))) -1 (nil) >> (nil)) > > It looks like you meant -16 instead. Somewhere (could be anywhere > really) you are treating the offset as an unsigned int instead of as > a HOST_WIDE_INT? > > See where the wrong offset first appears (use -da for example), and > work from there finding the problem. > > Good luck & have fun, Yup. In RTL CONST_INTs are supposed to be sign extended. jeff
