http://gcc.gnu.org/bugzilla/show_bug.cgi?id=54814
Bug #: 54814 Summary: [4.8 Regression] ICE: unable to find a register to spill in class 'R0_REG' Classification: Unclassified Product: gcc Version: 4.8.0 Status: UNCONFIRMED Keywords: ice-on-valid-code, ra Severity: normal Priority: P3 Component: other AssignedTo: unassig...@gcc.gnu.org ReportedBy: g...@gcc.gnu.org CC: eric.wedding...@atmel.com Target: avr Created attachment 28358 --> http://gcc.gnu.org/bugzilla/attachment.cgi?id=28358 spills.txt: Hundreds of Spill Fails The testsuit throws hundreds of spill fails when running against the avr cross compiler. The testsuite used to produce about ~5 spill fails with avr-gcc. The strange with these spill fails is that they report register class RO_REG which contains just one fixed register. ./gcc/testsuite/gcc.c-torture/compile/20010426-1.c:19:1: error: unable to find a register to spill in class 'R0_REG' ./gcc/testsuite/gcc.c-torture/compile/20040121-1.c:41:1: error: unable to find a register to spill in class 'R0_REG' ... For a complete list see attachment. == configure == SVN trunk r192090 from today (2012-10-04) $ ../../gcc.gnu.org/trunk/configure --target=avr --prefix=/local/gnu/install/gcc-4.8 --disable-nls --with-dwarf2 --enable-target-optspace=yes --enable-languages=c,c++