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author | Jim Grosbach <grosbach@apple.com> | 2012-04-19 23:59:23 +0000 |
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committer | Jim Grosbach <grosbach@apple.com> | 2012-04-19 23:59:23 +0000 |
commit | c1922c72adedadb414a3d19c3f150bfe1bc755a5 (patch) | |
tree | 0300d38e4882ee1acf89021a7d202edce85e277a /include/llvm/Target/Target.td | |
parent | dc21604d4af9cbe27d7fa067f7411e334ba5186e (diff) | |
download | llvm-c1922c72adedadb414a3d19c3f150bfe1bc755a5.tar.gz llvm-c1922c72adedadb414a3d19c3f150bfe1bc755a5.tar.bz2 llvm-c1922c72adedadb414a3d19c3f150bfe1bc755a5.tar.xz |
TableGen support for auto-generating assembly two-operand aliases.
Assembly matchers for instructions with a two-operand form. ARM is full
of these, for example:
add {Rd}, Rn, Rm // Rd is optional and is the same as Rn if omitted.
The property TwoOperandAliasConstraint on the instruction definition controls
when, and if, an alias will be formed. No explicit InstAlias definitions
are required.
rdar://11255754
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@155172 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'include/llvm/Target/Target.td')
-rw-r--r-- | include/llvm/Target/Target.td | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/include/llvm/Target/Target.td b/include/llvm/Target/Target.td index fa1ec55945..6a321ea2cf 100644 --- a/include/llvm/Target/Target.td +++ b/include/llvm/Target/Target.td @@ -402,6 +402,8 @@ class Instruction { string AsmMatchConverter = ""; + string TwoOperandAliasConstraint = ""; + ///@} } |