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| author | Evan Cheng <evan.cheng@apple.com> | 2007-03-01 08:56:24 +0000 |
|---|---|---|
| committer | Evan Cheng <evan.cheng@apple.com> | 2007-03-01 08:56:24 +0000 |
| commit | 5196b3680cf8df32b6c763e3d97e963e45150e5a (patch) | |
| tree | 14b3b8e4b51d71f931e91e8cc37ae6f5a4d1a070 /include/llvm/CodeGen/RegisterScavenging.h | |
| parent | f49407b790d8664d8ff9c103931b115ebe9cc96e (diff) | |
| download | llvm-5196b3680cf8df32b6c763e3d97e963e45150e5a.tar.gz llvm-5196b3680cf8df32b6c763e3d97e963e45150e5a.tar.bz2 llvm-5196b3680cf8df32b6c763e3d97e963e45150e5a.tar.xz | |
Add a version of FindUnusedReg that restrict search to a specific set of registers.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@34784 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'include/llvm/CodeGen/RegisterScavenging.h')
| -rw-r--r-- | include/llvm/CodeGen/RegisterScavenging.h | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/include/llvm/CodeGen/RegisterScavenging.h b/include/llvm/CodeGen/RegisterScavenging.h index c8e2862f05..733c9e549d 100644 --- a/include/llvm/CodeGen/RegisterScavenging.h +++ b/include/llvm/CodeGen/RegisterScavenging.h @@ -78,6 +78,11 @@ public: void setUnused(unsigned Reg) { RegStates.set(Reg); } void setUnused(BitVector Regs) { RegStates |= Regs; } + /// FindUnusedReg - Find a unused register of the specified register class + /// from the specified set of registers. It return 0 is none is found. + unsigned FindUnusedReg(const TargetRegisterClass *RegClass, + const BitVector &Candidates) const; + /// FindUnusedReg - Find a unused register of the specified register class. /// Exclude callee saved registers if directed. It return 0 is none is found. unsigned FindUnusedReg(const TargetRegisterClass *RegClass, |