runtime/vm/intermediate_language_x64.cc - Issue 15827006: Implement shift left on ARM and re-enable previously disabled test.

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Unified Diff: runtime/vm/intermediate_language_x64.cc

Issue 15827006: Implement shift left on ARM and re-enable previously disabled test. (Closed) Base URL: http://dart.googlecode.com/svn/branches/bleeding_edge/dart/

Patch Set: Created 7 years, 7 months ago

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Index: runtime/vm/intermediate_language_x64.cc

===================================================================

--- runtime/vm/intermediate_language_x64.cc (revision 23306)

+++ runtime/vm/intermediate_language_x64.cc (working copy)

@@ -2184,11 +2184,7 @@

__ j(NEGATIVE, deopt);

return;

}

- intptr_t tmp = (left_int > 0) ? left_int : ~left_int;

- intptr_t max_right = kSmiBits;

- while ((tmp >>= 1) != 0) {

- max_right--;

- }

+ const intptr_t max_right = kSmiBits - Utils::HighestBit(left_int);

const bool right_needs_check =

(right_range == NULL) ||

!right_range->IsWithin(0, max_right - 1);

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