search for: e_u8

On Sep 29, 2010, at 12:36 AM, Heikki Kultala wrote: > On 29 Sep 2010, at 06:25, Heikki Kultala wrote: > >> Our architecture has 1-bit boolean predicate registers. >> >> I've defined comparison >> >> def NErrb : InstTCE<(outs I1Regs:$op3), (ins I32Regs:$op1,I32Regs:$op2), "", [(set I1Regs:$op3, (setne I32Regs:$op1, I32Regs:$op2))]>;

On 29 Sep 2010, at 06:25, Heikki Kultala wrote: > Our architecture has 1-bit boolean predicate registers. > > I've defined comparison > > > def NErrb : InstTCE<(outs I1Regs:$op3), (ins I32Regs:$op1,I32Regs:$op2), "", [(set I1Regs:$op3, (setne I32Regs:$op1, I32Regs:$op2))]>; > > > > > But then I end up having the following bug: > >

...9;s code so it's hard to tell just from these snippets what's going on. For instance, it's not clear whether it's the instruction selector that's at fault or if your .td files have a bug in them somewhere. The original code is: #include <stdio.h> typedef unsigned char e_u8; typedef unsigned short e_u16; e_u16 Calc_crc8(e_u8 data, e_u16 crc ) __attribute((__noinline__)); e_u16 Calc_crc8(e_u8 data, e_u16 crc ) { e_u8 i,x16,carry; for (i = 0; i < 2; i++) { x16 = (e_u8)(((data) ^ ((e_u8)crc))&1); i...

...nstance, it's not clear whether it's the instruction selector that's at fault or if your .td files have a bug in them somewhere. >> >> The original code is: > > [snip] > >> where the interesting lines are lines 12-13: >> >> x16 = (e_u8)(((data) ^ ((e_u8)crc))&1); >> if (x16 == 1) >> >> The code which goes into isel is: >> >> bb.nph: >> %0 = zext i8 %data to i32 >> %1 = zext i16 %crc to i32 >> %2 = xor i32 %1, %0 >> %3 = and i32 %2, 1 >> %4 = icmp eq i...

...on. For instance, it's not clear whether it's the instruction selector that's at fault or if your .td files have a bug in them somewhere. >> The original code is: > > [snip] > >> where the interesting lines are lines 12-13: >> >> x16 = (e_u8)(((data) ^ ((e_u8)crc))&1); >> if (x16 == 1) >> >> The code which goes into isel is: >> >> bb.nph: >> %0 = zext i8 %data to i32 >> %1 = zext i16 %crc to i32 >> %2 = xor i32 %1, %0 >> %3 = and i32 %2, 1 >> %4 =...

...ippets what's going on. For instance, it's not clear whether it's the instruction selector that's at fault or if your .td files have a bug in them somewhere. > > The original code is: [snip] > where the interesting lines are lines 12-13: > > x16 = (e_u8)(((data) ^ ((e_u8)crc))&1); > if (x16 == 1) > > The code which goes into isel is: > > bb.nph: > %0 = zext i8 %data to i32 > %1 = zext i16 %crc to i32 > %2 = xor i32 %1, %0 > %3 = and i32 %2, 1 > %4 = icmp eq i32 %3, 0 > br i1 %4, la...

...ot clear whether it's the instruction selector that's at fault or if your .td files have a bug in them somewhere. >>> The original code is: >> >> [snip] >> >>> where the interesting lines are lines 12-13: >>> >>> x16 = (e_u8)(((data) ^ ((e_u8)crc))&1); >>> if (x16 == 1) >>> >>> The code which goes into isel is: >>> >>> bb.nph: >>> %0 = zext i8 %data to i32 >>> %1 = zext i16 %crc to i32 >>> %2 = xor i32 %1, %0 >>> %...