Evan Cheng 4784f1fc73 Add a bit IsUndef to MachineOperand. This indicates the def / use register operand is defined by an implicit_def. That means it can def / use any register and passes (e.g. register scavenger) can feel free to ignore them. ... The register allocator, when it allocates a register to a virtual register defined by an implicit_def, can allocate any physical register without worrying about overlapping live ranges. It should mark all of operands of the said virtual register so later passes will do the right thing. This is not the best solution. But it should be a lot less fragile to having the scavenger try to track what is defined by implicit_def. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@74518 91177308-0d34-0410-b5e6-96231b3b80d8		2009-06-30 08:49:04 +00:00
..
Analysis	Array accesses are independent if the underlying arrays differ.	2009-06-30 02:12:10 +00:00
Archive
Assembler	Split the Add, Sub, and Mul instruction opcodes into separate	2009-06-04 22:49:04 +00:00
Bindings/Ocaml
Bitcode	Don't remove aggregate-typed module level constants before encoding functions	2009-06-12 05:20:12 +00:00
BugPoint	Fix regular expression.	2009-06-12 05:39:02 +00:00
CodeGen	Add a bit IsUndef to MachineOperand. This indicates the def / use register operand is defined by an implicit_def. That means it can def / use any register and passes (e.g. register scavenger) can feel free to ignore them.	2009-06-30 08:49:04 +00:00
DebugInfo	upgrade	2009-06-23 22:11:37 +00:00
ExecutionEngine	Split the Add, Sub, and Mul instruction opcodes into separate	2009-06-04 22:49:04 +00:00
Feature	Let's ignore MDStrings also!	2009-06-26 02:26:12 +00:00
FrontendAda
FrontendC	The correct values here (as defined by gcc-4.2) are	2009-06-23 18:42:26 +00:00
FrontendC++	Testcase for (llvm-gcc) 73873. Usually	2009-06-22 04:47:32 +00:00
FrontendFortran
FrontendObjC
FrontendObjC++
Integer
lib	In an XFAIL line, treat "XFAIL: foo*bar" as a regular expression to be matched	2009-06-12 05:18:32 +00:00
Linker
LLVMC
MC/AsmParser	llvm-mc: Accept relocatable expressions for .org, assignments, .byte, etc.	2009-06-30 02:10:03 +00:00
Other	Add new function attribute - noimplicitfloat	2009-06-05 21:57:13 +00:00
Scripts
TableGen	Add some tests of advanced TableGen list functionality.	2009-06-29 20:07:17 +00:00
Transforms	Don't cache PHI exit values from exhaustive evaluations, because	2009-06-29 20:34:13 +00:00
Verifier	Dan noticed that the verifier wasn't thoroughly checking uses of	2009-05-29 19:39:36 +00:00
Makefile	Clarify how to configure llvm-gcc-4.2 for use with	2009-06-26 05:44:53 +00:00
Makefile.tests
TestRunner.sh