Quick compiler, out of registers fix
It turns out that the register pool sanity checker was not
working as expected, leaving some inconsistencies unreported.
This could result in "out of registers" failures, as well
as other more subtle problems.
This CL fixes the sanity checker, adds a lot more check and cleans
up the previously undetected episodes of insanity.
Cherry-pick of internal change 468162
Change-Id: Id2da97e99105a4c272c5fd256205a94b904ecea8
diff --git a/compiler/dex/quick/gen_loadstore.cc b/compiler/dex/quick/gen_loadstore.cc
index 8fcb09b..f5e7e63 100644
--- a/compiler/dex/quick/gen_loadstore.cc
+++ b/compiler/dex/quick/gen_loadstore.cc
@@ -145,10 +145,11 @@
// Wrong register class, realloc, copy and transfer ownership.
RegStorage new_reg = AllocTypedTemp(rl_src.fp, op_kind);
OpRegCopy(new_reg, rl_src.reg);
- // Associate the old sreg with the new register and clobber the old register.
- GetRegInfo(new_reg)->SetSReg(GetRegInfo(rl_src.reg)->SReg());
+ // Clobber the old reg.
Clobber(rl_src.reg);
+ // ...and mark the new one live.
rl_src.reg = new_reg;
+ MarkLive(rl_src);
}
return rl_src;
}
@@ -222,10 +223,11 @@
// Wrong register class, realloc, copy and transfer ownership.
RegStorage new_regs = AllocTypedTempWide(rl_src.fp, op_kind);
OpRegCopyWide(new_regs, rl_src.reg);
- // Associate the old sreg with the new register and clobber the old register.
- GetRegInfo(new_regs)->SetSReg(GetRegInfo(rl_src.reg)->SReg());
+ // Clobber the old regs.
Clobber(rl_src.reg);
+ // ...and mark the new ones live.
rl_src.reg = new_regs;
+ MarkLive(rl_src);
}
return rl_src;
}