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| author | Evan Cheng <evan.cheng@apple.com> | 2009-10-18 18:16:27 +0000 |
|---|---|---|
| committer | Evan Cheng <evan.cheng@apple.com> | 2009-10-18 18:16:27 +0000 |
| commit | ff89dcb06fbd103373436e2d0ae85f252fae2254 (patch) | |
| tree | a9c2c0c4ab7512a79f6bd15d41caa381e2cccf7c /include/llvm | |
| parent | 20270c909357e5e501cac1f5393430dfacfc57d8 (diff) | |
| download | external_llvm-ff89dcb06fbd103373436e2d0ae85f252fae2254.zip external_llvm-ff89dcb06fbd103373436e2d0ae85f252fae2254.tar.gz external_llvm-ff89dcb06fbd103373436e2d0ae85f252fae2254.tar.bz2 | |
-Revert parts of 84326 and 84411. Distinquishing between fixed and non-fixed
stack slots and giving them different PseudoSourceValue's did not fix the
problem of post-alloc scheduling miscompiling llvm itself.
- Apply Dan's conservative workaround by assuming any non fixed stack slots can
alias other memory locations. This means a load from spill slot #1 cannot
move above a store of spill slot #2.
- Enable post-alloc scheduling for x86 at optimization leverl Default and above.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@84424 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'include/llvm')
| -rw-r--r-- | include/llvm/CodeGen/PseudoSourceValue.h | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/include/llvm/CodeGen/PseudoSourceValue.h b/include/llvm/CodeGen/PseudoSourceValue.h index c6be645..aaf1f5f 100644 --- a/include/llvm/CodeGen/PseudoSourceValue.h +++ b/include/llvm/CodeGen/PseudoSourceValue.h @@ -39,6 +39,10 @@ namespace llvm { /// virtual bool isConstant(const MachineFrameInfo *) const; + /// isAliased - Test whether the memory pointed to by this + /// PseudoSourceValue may also be pointed to by an LLVM IR Value. + virtual bool isAliased() const; + /// classof - Methods for support type inquiry through isa, cast, and /// dyn_cast: /// |