Benjamin Kramer 0baa94a13b InstCombine: Turn icmp + sext into bitwise/integer ops when the input has only one unknown bit. ... int test1(unsigned x) { return (x&8) ? 0 : -1; } int test3(unsigned x) { return (x&8) ? -1 : 0; } before (x86_64): _test1: andl $8, %edi cmpl $1, %edi sbbl %eax, %eax ret _test3: andl $8, %edi cmpl $1, %edi sbbl %eax, %eax notl %eax ret after: _test1: shrl $3, %edi andl $1, %edi leal -1(%rdi), %eax ret _test3: shll $28, %edi movl %edi, %eax sarl $31, %eax ret git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@128732 91177308-0d34-0410-b5e6-96231b3b80d8		2011-04-01 20:09:10 +00:00
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Analysis	Remove PHINode::reserveOperandSpace(). Instead, add a parameter to	2011-03-30 11:28:46 +00:00
Archive	Revert PathV2 changes, as sys::fs::unique_file is not finished yet.	2011-03-01 19:50:55 +00:00
AsmParser	Remove PHINode::reserveOperandSpace(). Instead, add a parameter to	2011-03-30 11:28:46 +00:00
Bitcode	Remove PHINode::reserveOperandSpace(). Instead, add a parameter to	2011-03-30 11:28:46 +00:00
CodeGen	Add comments.	2011-04-01 19:57:01 +00:00
CompilerDriver	Build CompilerDriver library.	2011-03-12 22:01:42 +00:00
ExecutionEngine	Instantiate a JITMemoryManager for MCJIT Dyld	2011-03-29 21:03:05 +00:00
Linker	Set the unnamed_addr only when we're creating a new GV in the dest module.	2011-03-29 23:31:06 +00:00
MC	Added support symbolic floating point constants in the MC assembler for Infinity	2011-03-29 21:11:52 +00:00
Object	Object: Fix type punned pointer issues by making DataRefImpl a union and using intptr_t.	2011-01-21 02:27:02 +00:00
Support	Reset StringMap's NumTombstones on clears and rehashes.	2011-03-30 18:32:51 +00:00
Target	Modifies MipsAsmPrinter::isBlockOnlyReachableByFallthrough so that it handles delay slots correctly.	2011-04-01 18:57:38 +00:00
Transforms	InstCombine: Turn icmp + sext into bitwise/integer ops when the input has only one unknown bit.	2011-04-01 20:09:10 +00:00
VMCore	Various Instructions' resizeOperands() methods are only used to grow the	2011-04-01 08:00:58 +00:00
CMakeLists.txt	Build CompilerDriver library.	2011-03-12 22:01:42 +00:00
Makefile	Add LLVMObject Library.	2010-11-15 03:21:41 +00:00