cranelift: Rework pinned register lowering (#5249)

Rework pinned register lowering to avoid the use of pinned virtual registers, instead using the MovFromPReg and MovToPReg pseudo instructions.
2022-11-10 16:19:25 -08:00
parent 7717d8fa55
commit 0367fbc2d4
14 changed files with 150 additions and 71 deletions
--- a/cranelift/filetests/filetests/isa/aarch64/pinned-reg.clif
+++ b/cranelift/filetests/filetests/isa/aarch64/pinned-reg.clif
@@ -11,6 +11,8 @@ block0:
 }

 ; block0:
-;   add x21, x21, #1
+;   mov x1, x21
+;   add x1, x1, #1
+;   mov x21, x1
 ;   ret