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Add initial support for variants

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@16635 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Chris Lattner 2004-10-03 19:34:18 +00:00
parent c28d7ad257
commit 0fa206615a
1 changed files with 10 additions and 2 deletions
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12
lib/Target/Target.td
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@ -188,6 +188,14 @@ class AsmWriter {
// InstFormatName - AsmWriters can specify the name of the format string to
// print instructions with.
string InstFormatName = "AsmString";
// Variant - AsmWriters can be of multiple different variants. Variants are
// used to support targets that need to emit assembly code in ways that are
// mostly the same for different targets, but have minor differences in
// syntax. If the asmstring contains {|} characters in them, this integer
// will specify which alternative to use. For example "{x|y|z}" with Variant
// == 1, will expand to "y".
int Variant = 0;
}
def DefaultAsmWriter : AsmWriter;
@ -207,8 +215,8 @@ class Target {
// InstructionSet - Instruction set description for this target.
InstrInfo InstructionSet;
// AssemblyWriter - The AsmWriter instance to use for this target.
AsmWriter AssemblyWriter = DefaultAsmWriter;
// AssemblyWriters - The AsmWriter instances available for this target.
list<AsmWriter> AssemblyWriters = [DefaultAsmWriter];
}