6502/llvm-6502
1
0
Fork 0
mirror of https://github.com/c64scene-ar/llvm-6502.git synced 2024-09-27 15:57:13 +00:00
Code Issues Projects Releases Wiki Activity

Modify emission of jump tables on darwin to emit an extra "l" label that

Browse Source 
delimits the boundaries of jump tables.  This lets the linker's dead code
stripping optimization do a better job.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@33315 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Chris Lattner 2007-01-18 01:15:58 +00:00
parent 393a8eea3c
commit b266ccd0f4
2 changed files with 14 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

7
lib/Target/PowerPC/PPCTargetAsmInfo.cpp
View File

@ -57,6 +57,13 @@ DarwinTargetAsmInfo::DarwinTargetAsmInfo(const PPCTargetMachine &TM)
UsedDirective = "\t.no_dead_strip\t";
WeakRefDirective = "\t.weak_reference\t";
HiddenDirective = "\t.private_extern\t";
// In non-PIC modes, emit a special label before jump tables so that the
// linker can perform more accurate dead code stripping.
if (TM.getRelocationModel() != Reloc::PIC_) {
// Emit a local label that is preserved until the linker runs.
JumpTableSpecialLabelPrefix = "l";
}
}
LinuxTargetAsmInfo::LinuxTargetAsmInfo(const PPCTargetMachine &TM)

7
lib/Target/X86/X86TargetAsmInfo.cpp
View File

@ -68,6 +68,13 @@ X86TargetAsmInfo::X86TargetAsmInfo(const X86TargetMachine &TM) {
WeakRefDirective = "\t.weak_reference\t";
HiddenDirective = "\t.private_extern\t";
// In non-PIC modes, emit a special label before jump tables so that the
// linker can perform more accurate dead code stripping.
if (TM.getRelocationModel() != Reloc::PIC_) {
// Emit a local label that is preserved until the linker runs.
JumpTableSpecialLabelPrefix = "l";
}
NeedsSet = true;
DwarfAbbrevSection = ".section __DWARF,__debug_abbrev,regular,debug";
DwarfInfoSection = ".section __DWARF,__debug_info,regular,debug";