diff options
| -rw-r--r-- | include/llvm/CodeGen/AsmPrinter.h | 23 | ||||
| -rw-r--r-- | lib/CodeGen/AsmPrinter.cpp | 6 |
2 files changed, 27 insertions, 2 deletions
diff --git a/include/llvm/CodeGen/AsmPrinter.h b/include/llvm/CodeGen/AsmPrinter.h index b441ef5407..f21ed140b4 100644 --- a/include/llvm/CodeGen/AsmPrinter.h +++ b/include/llvm/CodeGen/AsmPrinter.h @@ -47,7 +47,7 @@ namespace llvm { /// CommentChar - This indicates the comment character used by the /// assembler. - const char *CommentChar; + const char *CommentChar; // Defaults to "#" /// GlobalPrefix - If this is set to a non-empty string, it is prepended /// onto all global symbols. This is often used for "_" or ".". @@ -71,6 +71,17 @@ namespace llvm { const char *Data32bitsDirective; // Defaults to "\t.long\t" const char *Data64bitsDirective; // Defaults to "\t.quad\t" + /// AlignDirective - The directive used to emit round up to an alignment + /// boundary. + /// + const char *AlignDirective; // Defaults to "\t.align\t" + + /// AlignmentIsInBytes - If this is true (the default) then the asmprinter + /// emits ".align N" directives, where N is the number of bytes to align to. + /// Otherwise, it emits ".align log2(N)", e.g. 3 to align to an 8 byte + /// boundary. + bool AlignmentIsInBytes; // Defaults to true + AsmPrinter(std::ostream &o, TargetMachine &tm) : O(o), TM(tm), CommentChar("#"), @@ -80,7 +91,10 @@ namespace llvm { Data8bitsDirective("\t.byte\t"), Data16bitsDirective("\t.short\t"), Data32bitsDirective("\t.long\t"), - Data64bitsDirective("\t.quad\t") { } + Data64bitsDirective("\t.quad\t"), + AlignDirective("\t.align\t"), + AlignmentIsInBytes(true) { + } /// doInitialization - Set up the AsmPrinter when we are working on a new /// module. If your pass overrides this, it must make sure to explicitly @@ -95,6 +109,11 @@ namespace llvm { /// is being processed from runOnMachineFunction. void setupMachineFunction(MachineFunction &MF); + /// emitAlignment - Emit an alignment directive to the specified power of + /// two boundary. For example, if you pass in 3 here, you will get an 8 + /// byte alignment. + void emitAlignment(unsigned NumBits) const; + /// emitConstantValueOnly - Print out the specified constant, without a /// storage class. Only constants of first-class type are allowed here. void emitConstantValueOnly(const Constant *CV); diff --git a/lib/CodeGen/AsmPrinter.cpp b/lib/CodeGen/AsmPrinter.cpp index 5fb356e58f..35733c8564 100644 --- a/lib/CodeGen/AsmPrinter.cpp +++ b/lib/CodeGen/AsmPrinter.cpp @@ -33,6 +33,12 @@ void AsmPrinter::setupMachineFunction(MachineFunction &MF) { CurrentFnName = Mang->getValueName((Value*)MF.getFunction()); } +// emitAlignment - Emit an alignment directive to the specified power of two. +void AsmPrinter::emitAlignment(unsigned NumBits) const { + if (AlignmentIsInBytes) NumBits = 1 << NumBits; + O << AlignDirective << NumBits << "\n"; +} + // Print out the specified constant, without a storage class. Only the // constants valid in constant expressions can occur here. void AsmPrinter::emitConstantValueOnly(const Constant *CV) { |