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| author | Tom Roeder <tmroeder@google.com> | 2014-06-05 19:29:43 +0000 |
|---|---|---|
| committer | Tom Roeder <tmroeder@google.com> | 2014-06-05 19:29:43 +0000 |
| commit | 44cb65fff1fa26a2a1ff90290f172756f082c8a1 (patch) | |
| tree | bf434728cf43339c7a59346772330571289765b8 /llvm/lib/Bitcode/Writer/BitcodeWriter.cpp | |
| parent | f7e289c0f25c920368b28d0d9d3be64d882f32cb (diff) | |
| download | bcm5719-llvm-44cb65fff1fa26a2a1ff90290f172756f082c8a1.tar.gz bcm5719-llvm-44cb65fff1fa26a2a1ff90290f172756f082c8a1.zip | |
Add a new attribute called 'jumptable' that creates jump-instruction tables for functions marked with this attribute.
It includes a pass that rewrites all indirect calls to jumptable functions to pass through these tables.
This also adds backend support for generating the jump-instruction tables on ARM and X86.
Note that since the jumptable attribute creates a second function pointer for a
function, any function marked with jumptable must also be marked with unnamed_addr.
llvm-svn: 210280
Diffstat (limited to 'llvm/lib/Bitcode/Writer/BitcodeWriter.cpp')
| -rw-r--r-- | llvm/lib/Bitcode/Writer/BitcodeWriter.cpp | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/llvm/lib/Bitcode/Writer/BitcodeWriter.cpp b/llvm/lib/Bitcode/Writer/BitcodeWriter.cpp index dddcbc6f7e0..55ed8ceb51b 100644 --- a/llvm/lib/Bitcode/Writer/BitcodeWriter.cpp +++ b/llvm/lib/Bitcode/Writer/BitcodeWriter.cpp @@ -177,6 +177,8 @@ static uint64_t getAttrKindEncoding(Attribute::AttrKind Kind) { return bitc::ATTR_KIND_INLINE_HINT; case Attribute::InReg: return bitc::ATTR_KIND_IN_REG; + case Attribute::JumpTable: + return bitc::ATTR_KIND_JUMP_TABLE; case Attribute::MinSize: return bitc::ATTR_KIND_MIN_SIZE; case Attribute::Naked: |
