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ARM64: Avoid iterating through unresolved branches information when unnecessary.

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R=ulan@chromium.org

Review URL: https://codereview.chromium.org/217343007

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@20444 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
This commit is contained in:
alexandre.rames@arm.com 2014-04-02 16:31:58 +00:00
parent a6d6cd08a1
commit 03a4e5fc78
1 changed files with 12 additions and 10 deletions
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6
src/arm64/assembler-arm64.cc
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@ -456,6 +456,8 @@ void Assembler::bind(Label* label) {
ASSERT(!label->is_near_linked());
ASSERT(!label->is_bound());
DeleteUnresolvedBranchInfoForLabel(label);
// If the label is linked, the link chain looks something like this:
//
// |--I----I-------I-------L
@ -497,8 +499,6 @@ void Assembler::bind(Label* label) {
ASSERT(label->is_bound());
ASSERT(!label->is_linked());
DeleteUnresolvedBranchInfoForLabel(label);
}
@ -551,6 +551,7 @@ void Assembler::DeleteUnresolvedBranchInfoForLabel(Label* label) {
return;
}
if (label->is_linked()) {
// Branches to this label will be resolved when the label is bound below.
std::multimap<int, FarBranchInfo>::iterator it_tmp, it;
it = unresolved_branches_.begin();
@ -561,6 +562,7 @@ void Assembler::DeleteUnresolvedBranchInfoForLabel(Label* label) {
unresolved_branches_.erase(it_tmp);
}
}
}
if (unresolved_branches_.empty()) {
next_veneer_pool_check_ = kMaxInt;
} else {