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| author | Evan Cheng <evan.cheng@apple.com> | 2010-09-10 01:29:16 +0000 |
|---|---|---|
| committer | Evan Cheng <evan.cheng@apple.com> | 2010-09-10 01:29:16 +0000 |
| commit | 3ef1c8759a20167457eb7fd82ebcaffe7ccaa1d1 (patch) | |
| tree | ffcb01b1621bcedb427d701cfaee9ea9a19b0a2c /lib/Target/ARM/ARMSubtarget.cpp | |
| parent | 920a2089d9b737820631bc6de4c4fb9fa9ad1e07 (diff) | |
| download | external_llvm-3ef1c8759a20167457eb7fd82ebcaffe7ccaa1d1.zip external_llvm-3ef1c8759a20167457eb7fd82ebcaffe7ccaa1d1.tar.gz external_llvm-3ef1c8759a20167457eb7fd82ebcaffe7ccaa1d1.tar.bz2 | |
Teach if-converter to be more careful with predicating instructions that would
take multiple cycles to decode.
For the current if-converter clients (actually only ARM), the instructions that
are predicated on false are not nops. They would still take machine cycles to
decode. Micro-coded instructions such as LDM / STM can potentially take multiple
cycles to decode. If-converter should take treat them as non-micro-coded
simple instructions.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@113570 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'lib/Target/ARM/ARMSubtarget.cpp')
| -rw-r--r-- | lib/Target/ARM/ARMSubtarget.cpp | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/lib/Target/ARM/ARMSubtarget.cpp b/lib/Target/ARM/ARMSubtarget.cpp index cb539f4..8a4052b 100644 --- a/lib/Target/ARM/ARMSubtarget.cpp +++ b/lib/Target/ARM/ARMSubtarget.cpp @@ -30,6 +30,7 @@ UseMOVT("arm-use-movt", ARMSubtarget::ARMSubtarget(const std::string &TT, const std::string &FS, bool isT) : ARMArchVersion(V4) + , ARMProcFamily(Others) , ARMFPUType(None) , UseNEONForSinglePrecisionFP(false) , SlowVMLx(false) @@ -50,7 +51,7 @@ ARMSubtarget::ARMSubtarget(const std::string &TT, const std::string &FS, , CPUString("generic") , TargetType(isELF) // Default to ELF unless otherwise specified. , TargetABI(ARM_ABI_APCS) { - // default to soft float ABI + // Default to soft float ABI if (FloatABIType == FloatABI::Default) FloatABIType = FloatABI::Soft; |