tree e6a521a1acb943079126f1b4c5bc5e68d7eb0018
parent 752b9de47d1eacab1c208cfddd3fa7631ec66845
author Alex Bradbury <asb@lowrisc.org> 1552494825 +0000
committer Alex Bradbury <asb@lowrisc.org> 1552494825 +0000

[RISCV] Only mark fp as reserved if the function has a dedicated frame pointer

This follows similar logic in the ARM and Mips backends, and allows the free
use of s0 in functions without a dedicated frame pointer. The changes in
callee-saved-gprs.ll most clearly show the effect of this patch.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@356063 91177308-0d34-0410-b5e6-96231b3b80d8