Mercurial > hg > truffle
comparison src/share/vm/opto/buildOopMap.cpp @ 729:04fa5affa478
6709742: find_base_for_derived's use of Ideal NULL is unsafe causing crashes during register allocation
Summary: Create a mach node corresponding to ideal node ConP #NULL specifically for derived pointers.
Reviewed-by: never
| author | kvn |
|---|---|
| date | Wed, 22 Apr 2009 17:03:18 -0700 |
| parents | 98cb887364d3 |
| children | acba6af809c8 |
comparison
equal
deleted
inserted
replaced
| 728:85656c8fa13f | 729:04fa5affa478 |
|---|---|
| 359 if( dup_check[reg2] != 0) cnt_callee_saves++; | 359 if( dup_check[reg2] != 0) cnt_callee_saves++; |
| 360 assert( cnt_callee_saves==3 || cnt_callee_saves==5, "missed some callee-save" ); | 360 assert( cnt_callee_saves==3 || cnt_callee_saves==5, "missed some callee-save" ); |
| 361 reg2++; | 361 reg2++; |
| 362 } | 362 } |
| 363 */ | 363 */ |
| 364 #endif | |
| 365 | |
| 366 #ifdef ASSERT | |
| 367 for( OopMapStream oms1(omap, OopMapValue::derived_oop_value); !oms1.is_done(); oms1.next()) { | |
| 368 OopMapValue omv1 = oms1.current(); | |
| 369 bool found = false; | |
| 370 for( OopMapStream oms2(omap,OopMapValue::oop_value); !oms2.is_done(); oms2.next()) { | |
| 371 if( omv1.content_reg() == oms2.current().reg() ) { | |
| 372 found = true; | |
| 373 break; | |
| 374 } | |
| 375 } | |
| 376 assert( found, "derived with no base in oopmap" ); | |
| 377 } | |
| 364 #endif | 378 #endif |
| 365 | 379 |
| 366 return omap; | 380 return omap; |
| 367 } | 381 } |
| 368 | 382 |