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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@10681 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Alkis Evlogimenos 2004-01-04 23:09:24 +00:00
parent a29b94dd5a
commit 50c047d159
1 changed files with 10 additions and 5 deletions
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15
lib/CodeGen/TwoAddressInstructionPass.cpp
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@ -7,11 +7,16 @@
//
//===----------------------------------------------------------------------===//
//
// This file implements the LiveInterval analysis pass which is used
// by the Linear Scan Register allocator. This pass linearizes the
// basic blocks of the function in DFS order and uses the
// LiveVariables pass to conservatively compute live intervals for
// each virtual and physical register.
// This file implements the TwoAddress instruction pass which is used
// by most register allocators. Two-Address instructions are rewritten
// from:
//
// A = B op C
//
// to:
//
// A = B
// A = A op C
//
//===----------------------------------------------------------------------===//