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Unified Diff: bleeding_edge/src/ia32/macro-assembler-ia32.h

Issue 501113: Refactor smi tagging and untagging on IA-32. (Closed) Base URL: http://v8.googlecode.com/svn/branches/bleeding_edge/
Patch Set: Created 11 years ago
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Index: bleeding_edge/src/ia32/macro-assembler-ia32.h
===================================================================
--- bleeding_edge/src/ia32/macro-assembler-ia32.h (revision 3492)
+++ bleeding_edge/src/ia32/macro-assembler-ia32.h (working copy)
@@ -142,6 +142,15 @@
// jcc instructions (je, ja, jae, jb, jbe, je, and jz).
void FCmp();
+ // Smi tagging support.
+ void SmiTag(Register reg) {
+ ASSERT(kSmiTag == 0);
+ shl(reg, kSmiTagSize);
+ }
+ void SmiUntag(Register reg) {
+ sar(reg, kSmiTagSize);
+ }
+
// ---------------------------------------------------------------------------
// Exception handling
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