llvm-svn: 62279

llvm-svn: 62276

and into the ScheduleDAGInstrs class, so that they don't get
destructed and re-constructed for each block. This fixes a
compile-time hot spot in the post-pass scheduler.

To help facilitate this, tidy and do some minor reorganization
in the scheduler constructor functions.

llvm-svn: 62275

Use light weight DebugInfo object directly.

llvm-svn: 62269

previous commit.

llvm-svn: 62266

llvm-svn: 62262

llvm-svn: 62260

llvm-svn: 62256

llvm-svn: 62209

Removoe MachineModuleInfo methods (and related DebugInfoDesc class  hierarchy) that were used to handle debug info.

llvm-svn: 62199

Keep "has debug info" big in MachineModuleInfo to avoid circular dependency between AsmPrinter and CodeGen.

llvm-svn: 62191

llvm-svn: 62190

llvm-svn: 62185

llvm-svn: 62184

llvm-svn: 62178

scheduling dependencies. Add assertion checks to help catch
this.

It appears the Mips target defaults to list-td, and it has a
regression test that uses a physreg dependence. Such code was
liable to be miscompiled, and now evokes an assertion failure.

llvm-svn: 62177

been modified, to avoid trouble in the (unlikely) scenario that
D is a reference to an element in one of those arrays.

llvm-svn: 62173

via two paths, process it once not twice, d'oh!
Analysis, testcase and original patch thanks to
Mon Ping Wang.

llvm-svn: 62169

was not being cleaned by ExpungeNode.

llvm-svn: 62167

llvm-svn: 62166

llvm-svn: 62151

FIX llvm-gcc bootstrap on x86_64 linux. If a virtual register is copied to a physical register, it's not necessarily defined by a copy. We have to watch out it doesn't clobber any sub-register that might be live during its live interval. If the live interval crosses a basic block, then it's not safe to check with the less conservative check (by scanning uses and defs) because it's possible a sub-register might be live out of the block.

llvm-svn: 62144

Use DebugInfo interface to lower dbg_* intrinsics.

llvm-svn: 62127

llvm-svn: 62125

llvm-svn: 62118

If multiple compile units are seen then emit them independently. In other words, do not force all DIEs into first, whatever it is, compile unit. 

Note, multiple compile unit support is not well tested (it did not work correctly until now anyway.)

llvm-svn: 62116

llvm-svn: 62115

llvm-svn: 62114

suggested by Chris.

llvm-svn: 62099

( May be this info should be directly handled by the dwarf writer ? )

llvm-svn: 62096

llvm-svn: 62092

llvm-svn: 62090

Fix PR3241: Currently EmitCopyFromReg emits a copy from the physical register to a virtual register unless it requires an expensive cross class copy. That means we are only treating "expensive to copy" register dependency as physical register dependency.
Also future proof the scheduler to handle "normal" physical register dependencies. The code is not exercised yet.

llvm-svn: 62074

llvm-svn: 62073

llvm-svn: 62036

llvm-svn: 62023

llvm-svn: 62022

llvm-svn: 62015

llvm-svn: 62005

llvm-svn: 61999