https://sourceware.org/bugzilla/show_bug.cgi?id=18414
--- Comment #3 from Hal Finkel <hfinkel at anl dot gov> --- (In reply to Hal Finkel from comment #2) > (In reply to Alan Modra from comment #1) > > True, ld will do this. However, the optimization is relying on gcc to > > generate code that can be optimized this way.. So I'm assuming the example > > code was from llvm or assembly. > > Yes, it was LLVM. > > > > > gcc ensures that the optimization is valid by adding a dependency on r2 to > > the low part of the address calculation. > > Indeed, I'll need to do the same in LLVM. However, it would be nice if the > bug could be fixed in binutils as well. Are these kinds of restrictions > documented anywhere? Also, just noticing that you tagged this as WONTFIX, why not? You need to scan the instructions to find the second in the pair anyhow; why not break if you find an instruction that writes to r2? -- You are receiving this mail because: You are on the CC list for the bug. _______________________________________________ bug-binutils mailing list bug-binutils@gnu.org https://lists.gnu.org/mailman/listinfo/bug-binutils
