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Code Issues Projects Releases Wiki Activity

De-virtualize SwitchSection.

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@28047 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Jeff Cohen
2006-05-02 03:58:45 +00:00
parent c6a057b04d
commit 51b776d259
4 changed files with 46 additions and 40 deletions
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52
lib/CodeGen/AsmPrinter.cpp
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@@ -47,6 +47,7 @@ AsmPrinter::AsmPrinter(std::ostream &o, TargetMachine &tm)
AlignDirective("\t.align\t"),
AlignmentIsInBytes(true),
SwitchToSectionDirective("\t.section\t"),
MLSections(false),
ConstantPoolSection("\t.section .rodata\n"),
JumpTableSection("\t.section .rodata\n"),
StaticCtorsSection("\t.section .ctors,\"aw\",@progbits"),
@@ -63,16 +64,47 @@ AsmPrinter::AsmPrinter(std::ostream &o, TargetMachine &tm)
///
void AsmPrinter::SwitchSection(const char *NewSection, const GlobalValue *GV) {
std::string NS;
if (GV && GV->hasSection())
NS = SwitchToSectionDirective + GV->getSection();
else
NS = std::string("\t")+NewSection;
if (CurrentSection != NS) {
CurrentSection = NS;
if (!CurrentSection.empty())
O << CurrentSection << '\n';
// Microsoft ML/MASM has a fundamentally different approach to handling
// sections.
if (MLSections) {
if (*NewSection == 0) {
// Simply end the current section, if any.
if (CurrentSection != "") {
O << CurrentSection << "\tends\n";
CurrentSection = "";
}
return;
}
bool isData = strcmp(NewSection , ".data") == 0;
if (GV && GV->hasSection())
NS = GV->getSection();
else if (isData)
NS = "_data";
else
NS = "_text";
if (CurrentSection != NS) {
if (CurrentSection != "")
O << CurrentSection << "\tends\n";
CurrentSection = NS;
O << CurrentSection << (isData ? "\tsegment 'DATA'\n"
: "\tsegment 'CODE'\n");
}
} else {
if (GV && GV->hasSection())
NS = SwitchToSectionDirective + GV->getSection();
else
NS = std::string("\t")+NewSection;
if (CurrentSection != NS) {
CurrentSection = NS;
if (!CurrentSection.empty())
O << CurrentSection << '\n';
}
}
}