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| author | Dan Gohman <gohman@apple.com> | 2011-05-03 00:46:49 +0000 |
|---|---|---|
| committer | Dan Gohman <gohman@apple.com> | 2011-05-03 00:46:49 +0000 |
| commit | cca82149adef8306a295abdc963213ae3b11bbb6 (patch) | |
| tree | 2d38fc521b67e22982d8a8535c98bafe4cdbd709 /lib/Target/ARM/ARMISelLowering.h | |
| parent | f7710af4ba78aa7a0cc9c226f334d8f2b6ab31bf (diff) | |
| download | external_llvm-cca82149adef8306a295abdc963213ae3b11bbb6.zip external_llvm-cca82149adef8306a295abdc963213ae3b11bbb6.tar.gz external_llvm-cca82149adef8306a295abdc963213ae3b11bbb6.tar.bz2 | |
Add an unfolded offset field to LSR's Formula record. This is used to
model constants which can be added to base registers via add-immediate
instructions which don't require an additional register to materialize
the immediate.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@130743 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'lib/Target/ARM/ARMISelLowering.h')
| -rw-r--r-- | lib/Target/ARM/ARMISelLowering.h | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/lib/Target/ARM/ARMISelLowering.h b/lib/Target/ARM/ARMISelLowering.h index a2e6260..82d167e 100644 --- a/lib/Target/ARM/ARMISelLowering.h +++ b/lib/Target/ARM/ARMISelLowering.h @@ -264,6 +264,12 @@ namespace llvm { /// the immediate into a register. virtual bool isLegalICmpImmediate(int64_t Imm) const; + /// isLegalAddImmediate - Return true if the specified immediate is legal + /// add immediate, that is the target has add instructions which can + /// add a register and the immediate without having to materialize + /// the immediate into a register. + virtual bool isLegalAddImmediate(int64_t Imm) const; + /// getPreIndexedAddressParts - returns true by value, base pointer and /// offset pointer and addressing mode by reference if the node's address /// can be legally represented as pre-indexed load / store address. |