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<p class=MsoNormal><font size=2 color=navy face=Arial><span lang=SV
style='font-size:10.0pt;font-family:Arial;color:navy'>Hi Torgny,<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span lang=SV
style='font-size:10.0pt;font-family:Arial;color:navy'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'>You may want to check your
TargetISelLowering, for the setOperationAction you have on BRCOND.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'>BR_CC is the result of the BRCOND expansion.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span lang=FR
style='font-size:10.0pt;font-family:Arial;color:navy'>Best regards,<o:p></o:p></span></font></p>
<div>
<p class=MsoNormal><font size=2 color=navy face="Courier New"><span lang=FR
style='font-size:10.0pt;font-family:"Courier New";color:navy'>-- <o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face="Courier New"><span lang=FR
style='font-size:10.0pt;font-family:"Courier New";color:navy'>Arnaud de
Grandmaison <o:p></o:p></span></font></p>
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<p class=MsoNormal><b><font size=2 face=Tahoma><span style='font-size:10.0pt;
font-family:Tahoma;font-weight:bold'>From:</span></font></b><font size=2
face=Tahoma><span style='font-size:10.0pt;font-family:Tahoma'>
llvmdev-bounces@cs.uiuc.edu [mailto:llvmdev-bounces@cs.uiuc.edu] <b><span
style='font-weight:bold'>On Behalf Of </span></b>Torgny Andersson<br>
<b><span style='font-weight:bold'>Sent:</span></b> Wednesday, November 24, 2010
1:46 PM<br>
<b><span style='font-weight:bold'>To:</span></b> llvmdev@cs.uiuc.edu<br>
<b><span style='font-weight:bold'>Subject:</span></b> [LLVMdev] Selecting
BRCOND instead of BRCC</span></font><o:p></o:p></p>
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<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'>Hi everyone,<br>
<br>
I have the following code (as part of a larger function):<br>
</span></font><font face="Courier New"><span style='font-family:"Courier New"'>%0
= icmp eq i16 %a, 0 ; <i1> [#uses=1]<br>
br i1 %0, label %bb1, label %bb</span></font><br>
<br>
I would like to match this with a BRCOND, but all I get is an error message
when compiling the above code that say:<br>
<font face="Courier New"><span style='font-family:"Courier New"'></span><span
id=":a2">LLVM ERROR: Cannot yet select: 0x170f200: ch = br_cc 0x170f000,
0x170ed00, 0x170dc60, 0x170ec00, 0x170ef00 [ID=19]<br>
0x170f000: ch = TokenFactor 0x170e560, 0x170e760, 0x170e960 [ID=18]<br>
0x170e560: ch = CopyToReg 0x16d5748, 0x170e460, 0x170df60 [ID=15]<br>
0x16d5748: ch = EntryToken [ORD=1] [ID=0]<br>
0x170e460: i16 = Register %reg16384 [ID=5]<br>
0x170df60: i16,ch = CopyFromReg 0x16d5748, 0x170de60
[ID=12]<br>
0x16d5748: ch = EntryToken [ORD=1] [ID=0]<br>
0x170de60: i16 = Register %reg16388 [ID=2]<br>
0x170e760: ch = CopyToReg 0x16d5748, 0x170e660, 0x170e160 [ID=16]<br>
0x16d5748: ch = EntryToken [ORD=1] [ID=0]<br>
0x170e660: i16 = Register %reg16385 [ID=6]<br>
0x170e160: i16,ch = CopyFromReg 0x16d5748, 0x170e060
[ID=13]<br>
0x16d5748: ch = EntryToken [ORD=1] [ID=0]<br>
0x170e060: i16 = Register %reg16389 [ID=3]<br>
0x170e960: ch = CopyToReg 0x16d5748, 0x170e860, 0x170e360 [ID=17]<br>
0x16d5748: ch = EntryToken [ORD=1] [ID=0]<br>
0x170e860: i16 = Register %reg16386 [ID=7]<br>
0x170e360: i16,ch = CopyFromReg 0x16d5748, 0x170e260
[ID=14]<br>
0x16d5748: ch = EntryToken [ORD=1] [ID=0]<br>
0x170e260: i16 = Register %reg16390 [ID=4]<br>
0x170ed00: ch = seteq [ORD=1] [ID=9]<br>
0x170dc60: i16,ch = CopyFromReg 0x16d5748, 0x170db60 [ORD=1] [ID=11]<br>
0x16d5748: ch = EntryToken [ORD=1] [ID=0]<br>
0x170db60: i16 = Register %reg16387 [ORD=1] [ID=1]<br>
0x170ec00: i16 = Constant<0> [ORD=1] [ID=8]<br>
0x170ef00: ch = BasicBlock<bb1 0x170a5d8> [ID=10]<br>
</span></font><br>
</span><span id=":aa">In my InstrInfo.td file I'm trying to match BRCOND as
follows:<br>
<font face="Courier New"><span style='font-family:"Courier New"'></span><span
id=":a1">let isBranch = 1 in<br>
def CondBranch : F3_1<2, 0b000101, <br>
(outs),<br>
(ins IntRegs:$L, i16imm:$R,
brtarget:$dst),<br>
"; TODO: do conditional
branching.",<br>
[(brcond (seteq IntRegs:$L, simm8:$R),
bb:$dst)]>;</span></span></font><br>
<br>
I know CondBranch only handles SETEQ, but it should still match the code above
(which does "icmp eq")? Or am I wrong?<br>
<br>
Thanks!<br>
<br>
/ Torgny<o:p></o:p></p>
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