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Add bundle aware API for querying instruction properties and switch the code

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generator to it. For non-bundle instructions, these behave exactly the same
as the MC layer API.

For properties like mayLoad / mayStore, look into the bundle and if any of the
bundled instructions has the property it would return true.
For properties like isPredicable, only return true if *all* of the bundled
instructions have the property.
For properties like canFoldAsLoad, isCompare, conservatively return false for
bundles.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@146026 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Evan Cheng
2011-12-07 07:15:52 +00:00
parent 5729c5848c
commit 5a96b3dad2
69 changed files with 596 additions and 354 deletions
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lib/CodeGen/AsmPrinter/AsmPrinter.cpp
+1 -1
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@@ -2087,7 +2087,7 @@ isBlockOnlyReachableByFallthrough(const MachineBasicBlock *MBB) const {
MachineInstr &MI = *II;
// If it is not a simple branch, we are in a table somewhere.
if (!MI.getDesc().isBranch() || MI.getDesc().isIndirectBranch())
if (!MI.isBranch() || MI.isIndirectBranch())
return false;
// If we are the operands of one of the branches, this is not