<html><head><meta http-equiv="Content-Type" content="text/html charset=us-ascii"></head><body style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space;">Hi Stephan,<div><br></div><div>I found the issue. The problem was that I was requesting the register for an instruction in a different basic block. The register might not be defined, even though the instruction has been emitted. In this particular case the instruction - a load - was folded into the compare and therefore no register was defined.</div><div><br></div><div>I have a fix and I am creating a reduced test case.</div><div><br></div><div>Cheers,</div><div>Juergen</div><div><br></div><div><br><div><div>On Jun 25, 2014, at 9:52 AM, Juergen Ributzka <<a href="mailto:juergen@apple.com">juergen@apple.com</a>> wrote:</div><br class="Apple-interchange-newline"><blockquote type="cite"><meta http-equiv="Content-Type" content="text/html charset=iso-8859-1"><div style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space;">Hi Stephane,<div><br></div><div>I will take a look and see if I can find a quick fix. If not, I will revert the change.</div><div><br></div><div>Thanks for tracking this down for me again. Are you running an -O0 buildbot?</div><div><br></div><div>Cheers,</div><div>Juergen</div><div><br></div><div><br><div><div>On Jun 25, 2014, at 8:08 AM, Stephan Bergmann <<a href="mailto:sbergman@redhat.com">sbergman@redhat.com</a>> wrote:</div><br class="Apple-interchange-newline"><blockquote type="cite"><span style="font-family: Helvetica; font-size: 12px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: normal; orphans: auto; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; widows: auto; word-spacing: 0px; -webkit-text-stroke-width: 0px; float: none; display: inline !important;">...looks like X86FastISel::X86FastEmitCMoveSelect -> X86FastEmitCompare(CmpLHS, CmpRHS, CmpVT) -> getRegForValue(Op0) comes up with a different virtual register than the one that got spilled out, for whatever reason (way beyond my humble debugging attempts).</span><br style="font-family: Helvetica; font-size: 12px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: normal; orphans: auto; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; widows: auto; word-spacing: 0px; -webkit-text-stroke-width: 0px;"><br style="font-family: Helvetica; font-size: 12px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: normal; orphans: auto; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; widows: auto; word-spacing: 0px; -webkit-text-stroke-width: 0px;"><span style="font-family: Helvetica; font-size: 12px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: normal; orphans: auto; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; widows: auto; word-spacing: 0px; -webkit-text-stroke-width: 0px; float: none; display: inline !important;">Stephan</span></blockquote></div><br></div></div>_______________________________________________<br>llvm-commits mailing list<br><a href="mailto:llvm-commits@cs.uiuc.edu">llvm-commits@cs.uiuc.edu</a><br>http://lists.cs.uiuc.edu/mailman/listinfo/llvm-commits<br></blockquote></div><br></div></body></html>