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Issue 1117011: Inline floating point compare... (Closed) Base URL: http://v8.googlecode.com/svn/branches/bleeding_edge/
Patch Set: '' Created 10 years, 9 months ago
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1 // Copyright 2009 the V8 project authors. All rights reserved. 1 // Copyright 2009 the V8 project authors. All rights reserved.
2 // Redistribution and use in source and binary forms, with or without 2 // Redistribution and use in source and binary forms, with or without
3 // modification, are permitted provided that the following conditions are 3 // modification, are permitted provided that the following conditions are
4 // met: 4 // met:
5 // 5 //
6 // * Redistributions of source code must retain the above copyright 6 // * Redistributions of source code must retain the above copyright
7 // notice, this list of conditions and the following disclaimer. 7 // notice, this list of conditions and the following disclaimer.
8 // * Redistributions in binary form must reproduce the above 8 // * Redistributions in binary form must reproduce the above
9 // copyright notice, this list of conditions and the following 9 // copyright notice, this list of conditions and the following
10 // disclaimer in the documentation and/or other materials provided 10 // disclaimer in the documentation and/or other materials provided
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283 DECLARE_ARGCHECK_VARS(arg); 283 DECLARE_ARGCHECK_VARS(arg);
284 284
285 cgen()->frame()->Push(arg); 285 cgen()->frame()->Push(arg);
286 DoBranch(cc, hint); 286 DoBranch(cc, hint);
287 *arg = cgen()->frame()->Pop(); 287 *arg = cgen()->frame()->Pop();
288 288
289 ASSERT_ARGCHECK(arg); 289 ASSERT_ARGCHECK(arg);
290 } 290 }
291 291
292 292
293 void JumpTarget::Branch(Condition cc, Result* arg0, Result* arg1, Hint hint) {
294 ASSERT(cgen()->has_valid_frame());
295
296 // We want to check that non-frame registers at the call site stay in
297 // the same registers on the fall-through branch.
298 DECLARE_ARGCHECK_VARS(arg0);
299 DECLARE_ARGCHECK_VARS(arg1);
300
301 cgen()->frame()->Push(arg0);
302 cgen()->frame()->Push(arg1);
303 DoBranch(cc, hint);
304 *arg1 = cgen()->frame()->Pop();
305 *arg0 = cgen()->frame()->Pop();
306
307 ASSERT_ARGCHECK(arg0);
308 ASSERT_ARGCHECK(arg1);
309 }
310
311
293 void BreakTarget::Branch(Condition cc, Result* arg, Hint hint) { 312 void BreakTarget::Branch(Condition cc, Result* arg, Hint hint) {
294 ASSERT(cgen()->has_valid_frame()); 313 ASSERT(cgen()->has_valid_frame());
295 314
296 int count = cgen()->frame()->height() - expected_height_; 315 int count = cgen()->frame()->height() - expected_height_;
297 if (count > 0) { 316 if (count > 0) {
298 // We negate and branch here rather than using DoBranch's negate 317 // We negate and branch here rather than using DoBranch's negate
299 // and branch. This gives us a hook to remove statement state 318 // and branch. This gives us a hook to remove statement state
300 // from the frame. 319 // from the frame.
301 JumpTarget fall_through; 320 JumpTarget fall_through;
302 // Branch to fall through will not negate, because it is a 321 // Branch to fall through will not negate, because it is a
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324 343
325 void JumpTarget::Bind(Result* arg) { 344 void JumpTarget::Bind(Result* arg) {
326 if (cgen()->has_valid_frame()) { 345 if (cgen()->has_valid_frame()) {
327 cgen()->frame()->Push(arg); 346 cgen()->frame()->Push(arg);
328 } 347 }
329 DoBind(); 348 DoBind();
330 *arg = cgen()->frame()->Pop(); 349 *arg = cgen()->frame()->Pop();
331 } 350 }
332 351
333 352
353 void JumpTarget::Bind(Result* arg0, Result* arg1) {
354 if (cgen()->has_valid_frame()) {
355 cgen()->frame()->Push(arg0);
356 cgen()->frame()->Push(arg1);
357 }
358 DoBind();
359 *arg1 = cgen()->frame()->Pop();
360 *arg0 = cgen()->frame()->Pop();
361 }
362
363
334 void JumpTarget::AddReachingFrame(VirtualFrame* frame) { 364 void JumpTarget::AddReachingFrame(VirtualFrame* frame) {
335 ASSERT(reaching_frames_.length() == merge_labels_.length()); 365 ASSERT(reaching_frames_.length() == merge_labels_.length());
336 ASSERT(entry_frame_ == NULL); 366 ASSERT(entry_frame_ == NULL);
337 Label fresh; 367 Label fresh;
338 merge_labels_.Add(fresh); 368 merge_labels_.Add(fresh);
339 reaching_frames_.Add(frame); 369 reaching_frames_.Add(frame);
340 } 370 }
341 371
342 372
343 // ------------------------------------------------------------------------- 373 // -------------------------------------------------------------------------
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414 temp.CopyTo(this); 444 temp.CopyTo(this);
415 temp.Unuse(); 445 temp.Unuse();
416 446
417 #ifdef DEBUG 447 #ifdef DEBUG
418 is_shadowing_ = false; 448 is_shadowing_ = false;
419 #endif 449 #endif
420 } 450 }
421 451
422 452
423 } } // namespace v8::internal 453 } } // namespace v8::internal
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