On Mon, Aug 3, 2015 at 3:39 PM, Peter Bergner <berg...@vnet.ibm.com> wrote: > This patch fixes an oversight in the tabort. pattern (only generated via > the __builtin_tabort (cause) builtin), which currently allows using r0. > The problem is that if r0 is used, the "cause" argument value passed in > by the user will be ignored, since using r0 means the value zero and not > the contents of r0 (similar to base registers in loads/stores, addi, etc.). > This patch restricts the tabort. pattern to only use base registers. > > This has passed bootstrapping and regtesting on trunk. Ok for mainline? > > I'd like to also backport this to the release branches. Is this ok for > them once bootstrapping and regtesting are complete on them? > > Peter > > gcc/ > * config/rs6000/htm.md (tabort.): Restrict the source operand to > using a base register. > > gcc/testsuite/ > * gcc.target/powerpc/htm-tabort-no-r0.c: New test.
Okay. Thanks, David
