Mercurial > hg > truffle
comparison src/cpu/x86/vm/interp_masm_x86_64.cpp @ 967:6918603297f7
6858208: jvm crash when specifying TypeProfileWidth=0 on jdk 6.0
Summary: Add an explicit check for TypeProfileWidth == 0 in record_klass_in_profile_helper() functions.
Reviewed-by: never, coleenp
| author | poonam |
|---|---|
| date | Tue, 01 Sep 2009 23:34:08 -0700 |
| parents | 3f06f139ef53 |
| children | 85f13cdfbc1d |
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| 966:bb287c042e99 | 967:6918603297f7 |
|---|---|
| 1270 // See below for example code. | 1270 // See below for example code. |
| 1271 void InterpreterMacroAssembler::record_klass_in_profile_helper( | 1271 void InterpreterMacroAssembler::record_klass_in_profile_helper( |
| 1272 Register receiver, Register mdp, | 1272 Register receiver, Register mdp, |
| 1273 Register reg2, | 1273 Register reg2, |
| 1274 int start_row, Label& done) { | 1274 int start_row, Label& done) { |
| 1275 if (TypeProfileWidth == 0) | |
| 1276 return; | |
| 1277 | |
| 1275 int last_row = VirtualCallData::row_limit() - 1; | 1278 int last_row = VirtualCallData::row_limit() - 1; |
| 1276 assert(start_row <= last_row, "must be work left to do"); | 1279 assert(start_row <= last_row, "must be work left to do"); |
| 1277 // Test this row for both the receiver and for null. | 1280 // Test this row for both the receiver and for null. |
| 1278 // Take any of three different outcomes: | 1281 // Take any of three different outcomes: |
| 1279 // 1. found receiver => increment count and goto done | 1282 // 1. found receiver => increment count and goto done |