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PPC: Fix trampoline pool blocking.

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Check whether a trampoline pool should be emitted after unblocking.
Otherwise, back-to-back sequences which block the trampoline pool can
cause it to be out of reach.

R=joransiu@ca.ibm.com, jyan@ca.ibm.com, michael_dawson@ca.ibm.com, dstence@us.ibm.com
BUG=

Review URL: https://codereview.chromium.org/1433343002

Cr-Commit-Position: refs/heads/master@{#31945}
This commit is contained in:
mbrandy 2015-11-11 08:31:43 -08:00 committed by Commit bot
parent 095e6a4f84
commit 8779afc9c2
1 changed files with 4 additions and 1 deletions
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5
src/ppc/assembler-ppc.h
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@ -1310,7 +1310,10 @@ class Assembler : public AssemblerBase {
}
void StartBlockTrampolinePool() { trampoline_pool_blocked_nesting_++; }
void EndBlockTrampolinePool() { trampoline_pool_blocked_nesting_--; }
void EndBlockTrampolinePool() {
int count = --trampoline_pool_blocked_nesting_;
if (count == 0) CheckTrampolinePoolQuick();
}
bool is_trampoline_pool_blocked() const {
return trampoline_pool_blocked_nesting_ > 0;
}