AArch64: Don't optimize 14 bit jumps to avoid failures when patching. Add Windows 19 bit jump relocation.

Change-Id: Ib15ce7ab0de315c4dc1f544d600ae669024a4a6d

Author: markshannon

Tools/jit/_optimizers.py

@@ -66,13 +66,6 @@
     "bc." + cond: ("bc." + inverse if inverse else None)
     for (cond, inverse) in _AARCH64_COND_CODES.items()
 }
-# And four compare and branch instructions
-_AARCH64_BRANCHES |= {
-    "cbz": "cbnz",
-    "cbnz": "cbz",
-    "tbz": "tbnz",
-    "tbnz": "tbz",
-}
 
 
 @dataclasses.dataclass

Tools/jit/_schema.py

@@ -10,6 +10,7 @@
     "ARM64_RELOC_PAGEOFF12",
     "ARM64_RELOC_UNSIGNED",
     "IMAGE_REL_AMD64_REL32",
+    "IMAGE_REL_ARM64_BRANCH19",
     "IMAGE_REL_ARM64_BRANCH26",
     "IMAGE_REL_ARM64_PAGEBASE_REL21",
     "IMAGE_REL_ARM64_PAGEOFFSET_12A",
@@ -28,7 +29,6 @@
     "R_AARCH64_MOVW_UABS_G1_NC",
     "R_AARCH64_MOVW_UABS_G2_NC",
     "R_AARCH64_MOVW_UABS_G3",
-    "R_AARCH64_TSTBR14",
     "R_X86_64_64",
     "R_X86_64_GOTPCREL",
     "R_X86_64_GOTPCRELX",

Tools/jit/_stencils.py

@@ -61,6 +61,7 @@ class HoleValue(enum.Enum):
     # x86_64-pc-windows-msvc:
     "IMAGE_REL_AMD64_REL32": "patch_x86_64_32rx",
     # aarch64-pc-windows-msvc:
+    "IMAGE_REL_ARM64_BRANCH19": "patch_aarch64_19r",
     "IMAGE_REL_ARM64_BRANCH26": "patch_aarch64_26r",
     "IMAGE_REL_ARM64_PAGEBASE_REL21": "patch_aarch64_21rx",
     "IMAGE_REL_ARM64_PAGEOFFSET_12A": "patch_aarch64_12",
@@ -81,7 +82,6 @@ class HoleValue(enum.Enum):
     "R_AARCH64_MOVW_UABS_G1_NC": "patch_aarch64_16b",
     "R_AARCH64_MOVW_UABS_G2_NC": "patch_aarch64_16c",
     "R_AARCH64_MOVW_UABS_G3": "patch_aarch64_16d",
-    "R_AARCH64_TSTBR14": "patch_aarch64_14r",
     # x86_64-unknown-linux-gnu:
     "R_X86_64_64": "patch_64",
     "R_X86_64_GOTPCRELX": "patch_x86_64_32rx",