Eliminate {push,pop}CalleeSaves in favor of individual pushes & pops
https://bugs.webkit.org/show_bug.cgi?id=127155
Reviewed by Geoffrey Garen.
Eliminated the offline assembler instructions {push,pop}CalleeSaves as well as the
ARM64 specific {push,pop}LRAndFP and replaced them with individual push and pop
instructions. Where the registers referenced by the added push and pop instructions
are not part of the offline assembler register aliases, used a newly added "emit"
offline assembler instruction which takes a string literal and outputs that
string as a native instruction.
* llint/LowLevelInterpreter.asm:
* offlineasm/arm.rb:
* offlineasm/arm64.rb:
* offlineasm/ast.rb:
* offlineasm/cloop.rb:
* offlineasm/instructions.rb:
* offlineasm/mips.rb:
* offlineasm/parser.rb:
* offlineasm/sh4.rb:
* offlineasm/transform.rb:
* offlineasm/x86.rb:
git-svn-id: http://svn.webkit.org/repository/webkit/trunk@172429 268f45cc-cd09-0410-ab3c-d52691b4dbfc
diff --git a/Source/JavaScriptCore/offlineasm/instructions.rb b/Source/JavaScriptCore/offlineasm/instructions.rb
index 44280e7..9196e3c 100644
--- a/Source/JavaScriptCore/offlineasm/instructions.rb
+++ b/Source/JavaScriptCore/offlineasm/instructions.rb
@@ -30,6 +30,7 @@
MACRO_INSTRUCTIONS =
[
+ "emit",
"addi",
"andi",
"lshifti",
@@ -248,8 +249,6 @@
"bnz",
"leai",
"leap",
- "pushCalleeSaves",
- "popCalleeSaves",
"memfence"
]
@@ -267,9 +266,7 @@
ARM64_INSTRUCTIONS =
[
- "pcrtoaddr", # Address from PC relative offset - adr instruction
- "popLRAndFP", # ARM64 requires registers to be pushed and popped in pairs,
- "pushLRAndFP" # therefore we do LR (link register) and FP (frame pointer) together.
+ "pcrtoaddr" # Address from PC relative offset - adr instruction
]
RISC_INSTRUCTIONS =
