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More dead code removal (using -Wunreachable-code)

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@148578 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
David Blaikie
2012-01-20 21:51:11 +00:00
parent 0041d4d447
commit 4d6ccb5f68
110 changed files with 179 additions and 442 deletions
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lib/Target/X86/X86FrameLowering.cpp
+13 -19
View File
@@ -1305,28 +1305,22 @@ HasNestArgument(const MachineFunction *MF) {
/// the first register, false for the second.
static unsigned
GetScratchRegister(bool Is64Bit, const MachineFunction &MF, bool Primary) {
if (Is64Bit) {
if (Is64Bit)
return Primary ? X86::R11 : X86::R12;
} else {
CallingConv::ID CallingConvention = MF.getFunction()->getCallingConv();
bool IsNested = HasNestArgument(&MF);
if (CallingConvention == CallingConv::X86_FastCall ||
CallingConvention == CallingConv::Fast) {
if (IsNested) {
report_fatal_error("Segmented stacks does not support fastcall with "
"nested function.");
return -1;
} else {
return Primary ? X86::EAX : X86::ECX;
}
} else {
if (IsNested)
return Primary ? X86::EDX : X86::EAX;
else
return Primary ? X86::ECX : X86::EAX;
}
CallingConv::ID CallingConvention = MF.getFunction()->getCallingConv();
bool IsNested = HasNestArgument(&MF);
if (CallingConvention == CallingConv::X86_FastCall ||
CallingConvention == CallingConv::Fast) {
if (IsNested)
report_fatal_error("Segmented stacks does not support fastcall with "
"nested function.");
return Primary ? X86::EAX : X86::ECX;
}
if (IsNested)
return Primary ? X86::EDX : X86::EAX;
return Primary ? X86::ECX : X86::EAX;
}
// The stack limit in the TCB is set to this many bytes above the actual stack