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author | Dan Gohman <gohman@apple.com> | 2007-06-14 20:50:44 +0000 |
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committer | Dan Gohman <gohman@apple.com> | 2007-06-14 20:50:44 +0000 |
commit | c101e95cb6aae1fd6a0727ba4b518a7894ae3089 (patch) | |
tree | 31516302b800a8107db6735791587a0cdb6ed26b /include/llvm/Target/TargetInstrInfo.h | |
parent | 86ff296e63cd9d4c28a7b73d3d6ec05e4011a0e5 (diff) | |
download | external_llvm-c101e95cb6aae1fd6a0727ba4b518a7894ae3089.zip external_llvm-c101e95cb6aae1fd6a0727ba4b518a7894ae3089.tar.gz external_llvm-c101e95cb6aae1fd6a0727ba4b518a7894ae3089.tar.bz2 |
Add a target hook to allow loads from constant pools to be rematerialized, and an
implementation for x86.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37576 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'include/llvm/Target/TargetInstrInfo.h')
-rw-r--r-- | include/llvm/Target/TargetInstrInfo.h | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/include/llvm/Target/TargetInstrInfo.h b/include/llvm/Target/TargetInstrInfo.h index 2571db4..e221466 100644 --- a/include/llvm/Target/TargetInstrInfo.h +++ b/include/llvm/Target/TargetInstrInfo.h @@ -298,6 +298,16 @@ public: return 0; } + /// isOtherReMaterializableLoad - If the specified machine instruction is a + /// direct load that is trivially rematerializable, not counting loads from + /// stack slots, return true. If not, return false. This predicate must + /// return false if the instruction has any side effects other than + /// producing the value from the load, or if it requres any address + /// registers that are not always available. + virtual bool isOtherReMaterializableLoad(MachineInstr *MI) const { + return false; + } + /// convertToThreeAddress - This method must be implemented by targets that /// set the M_CONVERTIBLE_TO_3_ADDR flag. When this flag is set, the target /// may be able to convert a two-address instruction into one or moretrue |