Hal Finkel ac8ba0c0fd Disable compare sinking in CodeGenPrepare when multiple condition registers are available ... As noted in the comment above CodeGenPrepare::OptimizeInst, which aggressively sinks compares to reduce pressure on the condition register(s), for targets such as PowerPC with multiple condition registers, this may not be the right thing to do. This adds an HasMultipleConditionRegisters boolean to TLI, and CodeGenPrepare::OptimizeInst is skipped when HasMultipleConditionRegisters is true. This functionality will be used by the PowerPC backend in an upcoming commit. Especially when the PowerPC backend starts tracking individual condition register bits as separate allocatable entities (which will happen in this upcoming commit), this sinking from CodeGenPrepare::OptimizeInst is significantly suboptimial. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@198354 91177308-0d34-0410-b5e6-96231b3b80d8		2014-01-02 21:13:43 +00:00
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llvm	Disable compare sinking in CodeGenPrepare when multiple condition registers are available	2014-01-02 21:13:43 +00:00
llvm-c	Begin adding docs and IR-level support for the inalloca attribute	2013-12-19 02:14:12 +00:00