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Don't print a label for the first MBB in a function.

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Compile this:

%_2E_str_8 = external global [75 x sbyte]
implementation   ; Functions:
declare int %printf(sbyte*, ...)
void %test()
        %tmp.101 = call int (sbyte*, ...)* %printf( sbyte* getelementptr ([75 x sbyte]* %_2E_str_8, int 0, int 0) )             ; <int> [#uses=0]
        unreachable
}

to this:

main_endif_2E_8:
        save -96, %o6, %o6
        sethi %hi(_2E_str_8), %l0
        add %l0, %lo(_2E_str_8), %o0
        call printf
        nop

instead of this:

main_endif_2E_8:
        save -96, %o6, %o6
        sethi %hi(_2E_str_8), %l0
        or %g0, %lo(_2E_str_8), %l1   ;; extra instruction
        add %l1, %l0, %o0
        call printf
        nop


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@25335 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Chris Lattner 2006-01-15 09:26:27 +00:00
parent b22c08b808
commit 4fca01731a
4 changed files with 26 additions and 10 deletions
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5
lib/Target/Sparc/SparcAsmPrinter.cpp
View File

@ -112,6 +112,7 @@ bool SparcV8AsmPrinter::runOnMachineFunction(MachineFunction &MF) {
for (MachineFunction::const_iterator I = MF.begin(), E = MF.end(); for (MachineFunction::const_iterator I = MF.begin(), E = MF.end();
I != E; ++I) { I != E; ++I) {
// Print a label for the basic block. // Print a label for the basic block.
if (I != MF.begin())
O << ".LBB" << Mang->getValueName(MF.getFunction ()) O << ".LBB" << Mang->getValueName(MF.getFunction ())
<< "_" << I->getNumber () << ":\t! " << "_" << I->getNumber () << ":\t! "
<< I->getBasicBlock ()->getName () << "\n"; << I->getBasicBlock ()->getName () << "\n";
@ -135,8 +136,8 @@ void SparcV8AsmPrinter::printOperand(const MachineInstr *MI, int opNum) {
if (MI->getOpcode() == V8::SETHIi && !MO.isRegister() && !MO.isImmediate()) { if (MI->getOpcode() == V8::SETHIi && !MO.isRegister() && !MO.isImmediate()) {
O << "%hi("; O << "%hi(";
CloseParen = true; CloseParen = true;
} else if (MI->getOpcode() ==V8::ORri &&!MO.isRegister() &&!MO.isImmediate()) } else if ((MI->getOpcode() == V8::ORri || MI->getOpcode() == V8::ADDri)
{ && !MO.isRegister() && !MO.isImmediate()) {
O << "%lo("; O << "%lo(";
CloseParen = true; CloseParen = true;
} }

7
lib/Target/Sparc/SparcInstrInfo.td
View File

@ -724,6 +724,13 @@ def : Pat<(V8lo tglobaladdr:$in), (ORri G0, tglobaladdr:$in)>;
def : Pat<(V8hi tconstpool:$in), (SETHIi tconstpool:$in)>; def : Pat<(V8hi tconstpool:$in), (SETHIi tconstpool:$in)>;
def : Pat<(V8lo tconstpool:$in), (ORri G0, tconstpool:$in)>; def : Pat<(V8lo tconstpool:$in), (ORri G0, tconstpool:$in)>;
// Add reg, lo. This is used when taking the addr of a global/constpool entry.
def : Pat<(add IntRegs:$r, (V8lo tglobaladdr:$in)),
(ADDri IntRegs:$r, tglobaladdr:$in)>;
def : Pat<(add IntRegs:$r, (V8lo tconstpool:$in)),
(ADDri IntRegs:$r, tconstpool:$in)>;
// Calls: // Calls:
def : Pat<(call tglobaladdr:$dst), def : Pat<(call tglobaladdr:$dst),
(CALL tglobaladdr:$dst)>; (CALL tglobaladdr:$dst)>;

5
lib/Target/SparcV8/SparcV8AsmPrinter.cpp
View File

@ -112,6 +112,7 @@ bool SparcV8AsmPrinter::runOnMachineFunction(MachineFunction &MF) {
for (MachineFunction::const_iterator I = MF.begin(), E = MF.end(); for (MachineFunction::const_iterator I = MF.begin(), E = MF.end();
I != E; ++I) { I != E; ++I) {
// Print a label for the basic block. // Print a label for the basic block.
if (I != MF.begin())
O << ".LBB" << Mang->getValueName(MF.getFunction ()) O << ".LBB" << Mang->getValueName(MF.getFunction ())
<< "_" << I->getNumber () << ":\t! " << "_" << I->getNumber () << ":\t! "
<< I->getBasicBlock ()->getName () << "\n"; << I->getBasicBlock ()->getName () << "\n";
@ -135,8 +136,8 @@ void SparcV8AsmPrinter::printOperand(const MachineInstr *MI, int opNum) {
if (MI->getOpcode() == V8::SETHIi && !MO.isRegister() && !MO.isImmediate()) { if (MI->getOpcode() == V8::SETHIi && !MO.isRegister() && !MO.isImmediate()) {
O << "%hi("; O << "%hi(";
CloseParen = true; CloseParen = true;
} else if (MI->getOpcode() ==V8::ORri &&!MO.isRegister() &&!MO.isImmediate()) } else if ((MI->getOpcode() == V8::ORri || MI->getOpcode() == V8::ADDri)
{ && !MO.isRegister() && !MO.isImmediate()) {
O << "%lo("; O << "%lo(";
CloseParen = true; CloseParen = true;
} }

7
lib/Target/SparcV8/SparcV8InstrInfo.td
View File

@ -724,6 +724,13 @@ def : Pat<(V8lo tglobaladdr:$in), (ORri G0, tglobaladdr:$in)>;
def : Pat<(V8hi tconstpool:$in), (SETHIi tconstpool:$in)>; def : Pat<(V8hi tconstpool:$in), (SETHIi tconstpool:$in)>;
def : Pat<(V8lo tconstpool:$in), (ORri G0, tconstpool:$in)>; def : Pat<(V8lo tconstpool:$in), (ORri G0, tconstpool:$in)>;
// Add reg, lo. This is used when taking the addr of a global/constpool entry.
def : Pat<(add IntRegs:$r, (V8lo tglobaladdr:$in)),
(ADDri IntRegs:$r, tglobaladdr:$in)>;
def : Pat<(add IntRegs:$r, (V8lo tconstpool:$in)),
(ADDri IntRegs:$r, tconstpool:$in)>;
// Calls: // Calls:
def : Pat<(call tglobaladdr:$dst), def : Pat<(call tglobaladdr:$dst),
(CALL tglobaladdr:$dst)>; (CALL tglobaladdr:$dst)>;