Akira Hatanaka 648f00c2f0 Add an option to use a virtual register as the global base register instead of ... reserving a physical register ($gp or $28) for that purpose. This will completely eliminate loads that restore the value of $gp after every function call, if the register allocator assigns a callee-saved register, or eliminate unnecessary loads if it assigns a temporary register. example: .cpload $25 // set $gp. ... .cprestore 16 // store $gp to stack slot 16($sp). ... jalr $25 // function call. clobbers $gp. lw $gp, 16($sp) // not emitted if callee-saved reg is chosen. ... lw $2, 4($gp) ... jalr $25 // function call. lw $gp, 16($sp) // not emitted if $gp is not live after this instruction. ... git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@151402 91177308-0d34-0410-b5e6-96231b3b80d8		2012-02-24 22:34:47 +00:00
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Analysis	fix PR12075, a regression in a recent transform I added. In unreachable code, gep chains can be infinite. Just like "stripPointerCasts", use a set to keep track of visited instructions so we don't recurse infinitely.	2012-02-24 19:01:58 +00:00
Archive
AsmParser
Bitcode
CodeGen	Add missing static	2012-02-24 21:52:44 +00:00
DebugInfo
ExecutionEngine	EE/Interpreter/ExternalFunctions.cpp: Staticize lle_X_() entries. They can be mapped in FuncNames[] at the initialization.	2012-02-24 00:20:08 +00:00
Linker	Capitalize messages so that they appear nicely with the linker's error messages.	2012-02-14 09:13:54 +00:00
MC	ARM Thumb symbol references in assembly need the low bit set.	2012-02-24 05:12:18 +00:00
Object	Remove static ctor.	2012-02-22 13:42:11 +00:00
Support	Fix undefined behavior.	2012-02-24 19:06:15 +00:00
TableGen	Add Foreach Loop	2012-02-22 16:09:41 +00:00
Target	Add an option to use a virtual register as the global base register instead of	2012-02-24 22:34:47 +00:00
Transforms	Teach GVN that x+y is the same as y+x and that x<y is the same as y>x.	2012-02-24 15:16:31 +00:00
VMCore	Reinstate r151049 now that GeneralHash is fixed.	2012-02-23 09:17:40 +00:00
CMakeLists.txt
LLVMBuild.txt
Makefile