llvm-6502

mirror of https://github.com/c64scene-ar/llvm-6502.git synced 2025-03-21 03:32:29 +00:00

History

Nick Lewycky 011cb4d5bd When forming an addrec out of a phi don't just look at the last computation and steal its flags for our own, there may be other computations in the middle. Check whether the LHS of the computation is the phi itself and then we know it's safe to steal the flags. Fixes PR22795.

There's a missed optimization opportunity where we could look at the full chain of computation and take the intersection of the flags instead of only looking one instruction deep.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@232134 91177308-0d34-0410-b5e6-96231b3b80d8

2015-03-13 01:37:52 +00:00

Analysis

When forming an addrec out of a phi don't just look at the last computation and steal its flags for our own, there may be other computations in the middle. Check whether the LHS of the computation is the phi itself and then we know it's safe to steal the flags. Fixes PR22795.

2015-03-13 01:37:52 +00:00

AsmParser

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Bitcode

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CodeGen

Use the cached subtarget off of the machine function.

2015-03-13 00:49:50 +00:00

DebugInfo