http://gcc.gnu.org/bugzilla/show_bug.cgi?id=56256
Bug #: 56256 Summary: [4.8 Regression] inline asm with {|} alternatives in it no longer accepted Classification: Unclassified Product: gcc Version: 4.8.0 Status: UNCONFIRMED Severity: normal Priority: P3 Component: target AssignedTo: ja...@gcc.gnu.org ReportedBy: ja...@gcc.gnu.org CC: d...@gcc.gnu.org Target: powerpc*-linux* As mentioned in http://gmplib.org/list-archives/gmp-bugs/2012-October/002763.html or as can be seen in https://bugzilla.redhat.com/show_bug.cgi?id=909298 dropping of ASSEMBLER_DIALECT macro from rs6000.h has an unfortunate effect on source incompatibility with inline asm written for older versions of gcc which used the assembly dialect alternatives in it.