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| author | David Greene <greened@obbligato.org> | 2009-05-14 21:54:42 +0000 |
|---|---|---|
| committer | David Greene <greened@obbligato.org> | 2009-05-14 21:54:42 +0000 |
| commit | 98ed3c7273cbccb69ed322fe2223f3bccd5b7850 (patch) | |
| tree | c2388cfe7d151c005df6880c92af4a9a0e04ab04 /llvm/docs/TableGenFundamentals.html | |
| parent | e0dd1d57b3a335362da046e4e6f5ed96880f4d15 (diff) | |
| download | bcm5719-llvm-98ed3c7273cbccb69ed322fe2223f3bccd5b7850.tar.gz bcm5719-llvm-98ed3c7273cbccb69ed322fe2223f3bccd5b7850.zip | |
Implement a !subst operation simmilar to $(subst) in GNU make to do
def/var/string substitution on generic pattern templates. For example:
def Type;
def v4f32 : Type;
def TYPE : Type;
class GenType<Type t> {
let type = !(subst TYPE, v4f32, t);
}
def TheType : GenType<TYPE>;
llvm-svn: 71801
Diffstat (limited to 'llvm/docs/TableGenFundamentals.html')
| -rw-r--r-- | llvm/docs/TableGenFundamentals.html | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/llvm/docs/TableGenFundamentals.html b/llvm/docs/TableGenFundamentals.html index 48fdd2a2018..0186453f368 100644 --- a/llvm/docs/TableGenFundamentals.html +++ b/llvm/docs/TableGenFundamentals.html @@ -404,6 +404,9 @@ the symbol table. If the type of 'a' does not match <em>type</em>, TableGen aborts with an error. </dd> <dt><tt>!nameconcat<type>(a, b)</tt></dt> <dd>Shorthand for !cast<type>(!strconcat(a, b))</dd> +<dt><tt>!subst(a, b, c)</tt></dt> + <dd>If 'a' and 'b' are of string type or are symbol references, substitute +'b' for 'a' in 'c.' This operation is analogous to $(subst) in GNU make.</dd> </dl> <p>Note that all of the values have rules specifying how they convert to values |
