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Issue 191293012: Reland "Handle non-power-of-2 divisors in division-like operations". (Closed) Base URL: https://v8.googlecode.com/svn/branches/bleeding_edge
Patch Set: Created 6 years, 9 months ago
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1 // Copyright 2012 the V8 project authors. All rights reserved. 1 // Copyright 2012 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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1356 Register scratch = kScratchRegister); 1356 Register scratch = kScratchRegister);
1357 1357
1358 // Initialize fields with filler values. Fields starting at |start_offset| 1358 // Initialize fields with filler values. Fields starting at |start_offset|
1359 // not including end_offset are overwritten with the value in |filler|. At 1359 // not including end_offset are overwritten with the value in |filler|. At
1360 // the end the loop, |start_offset| takes the value of |end_offset|. 1360 // the end the loop, |start_offset| takes the value of |end_offset|.
1361 void InitializeFieldsWithFiller(Register start_offset, 1361 void InitializeFieldsWithFiller(Register start_offset,
1362 Register end_offset, 1362 Register end_offset,
1363 Register filler); 1363 Register filler);
1364 1364
1365 1365
1366 // Emit code for a flooring division by a constant. The dividend register is
1367 // unchanged, the result is in rdx, and rax gets clobbered.
1368 void FlooringDiv(Register dividend, int32_t divisor);
1369
1366 // --------------------------------------------------------------------------- 1370 // ---------------------------------------------------------------------------
1367 // StatsCounter support 1371 // StatsCounter support
1368 1372
1369 void SetCounter(StatsCounter* counter, int value); 1373 void SetCounter(StatsCounter* counter, int value);
1370 void IncrementCounter(StatsCounter* counter, int value); 1374 void IncrementCounter(StatsCounter* counter, int value);
1371 void DecrementCounter(StatsCounter* counter, int value); 1375 void DecrementCounter(StatsCounter* counter, int value);
1372 1376
1373 1377
1374 // --------------------------------------------------------------------------- 1378 // ---------------------------------------------------------------------------
1375 // Debugging 1379 // Debugging
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1607 masm->popfq(); \ 1611 masm->popfq(); \
1608 } \ 1612 } \
1609 masm-> 1613 masm->
1610 #else 1614 #else
1611 #define ACCESS_MASM(masm) masm-> 1615 #define ACCESS_MASM(masm) masm->
1612 #endif 1616 #endif
1613 1617
1614 } } // namespace v8::internal 1618 } } // namespace v8::internal
1615 1619
1616 #endif // V8_X64_MACRO_ASSEMBLER_X64_H_ 1620 #endif // V8_X64_MACRO_ASSEMBLER_X64_H_
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