The defined registers are already serialized - they are represented by placing
them before the '=' in a machine instruction. However, certain instructions like
INLINEASM can have defined register operands after the '=', so this commit
introduces the 'def' register flag for such operands.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@245480
91177308-0d34-0410-b5e6-
96231b3b80d8
.Case("_", MIToken::underscore)
.Case("implicit", MIToken::kw_implicit)
.Case("implicit-def", MIToken::kw_implicit_define)
+ .Case("def", MIToken::kw_def)
.Case("dead", MIToken::kw_dead)
.Case("killed", MIToken::kw_killed)
.Case("undef", MIToken::kw_undef)
// Keywords
kw_implicit,
kw_implicit_define,
+ kw_def,
kw_dead,
kw_killed,
kw_undef,
bool isRegisterFlag() const {
return Kind == kw_implicit || Kind == kw_implicit_define ||
- Kind == kw_dead || Kind == kw_killed || Kind == kw_undef ||
- Kind == kw_internal || Kind == kw_early_clobber ||
- Kind == kw_debug_use;
+ Kind == kw_def || Kind == kw_dead || Kind == kw_killed ||
+ Kind == kw_undef || Kind == kw_internal ||
+ Kind == kw_early_clobber || Kind == kw_debug_use;
}
bool isMemoryOperandFlag() const {
case MIToken::kw_implicit_define:
Flags |= RegState::ImplicitDefine;
break;
+ case MIToken::kw_def:
+ Flags |= RegState::Define;
+ break;
case MIToken::kw_dead:
Flags |= RegState::Dead;
break;
switch (Token.kind()) {
case MIToken::kw_implicit:
case MIToken::kw_implicit_define:
+ case MIToken::kw_def:
case MIToken::kw_dead:
case MIToken::kw_killed:
case MIToken::kw_undef:
void printStackObjectReference(int FrameIndex);
void printOffset(int64_t Offset);
void printTargetFlags(const MachineOperand &Op);
- void print(const MachineOperand &Op, const TargetRegisterInfo *TRI);
+ void print(const MachineOperand &Op, const TargetRegisterInfo *TRI,
+ bool IsDef = false);
void print(const MachineMemOperand &Op);
void print(const MCCFIInstruction &CFI, const TargetRegisterInfo *TRI);
++I) {
if (I)
OS << ", ";
- print(MI.getOperand(I), TRI);
+ print(MI.getOperand(I), TRI, /*IsDef=*/true);
}
if (I)
return nullptr;
}
-void MIPrinter::print(const MachineOperand &Op, const TargetRegisterInfo *TRI) {
+void MIPrinter::print(const MachineOperand &Op, const TargetRegisterInfo *TRI,
+ bool IsDef) {
printTargetFlags(Op);
switch (Op.getType()) {
case MachineOperand::MO_Register:
// FIXME: Serialize the tied register.
if (Op.isImplicit())
OS << (Op.isDef() ? "implicit-def " : "implicit ");
+ else if (!IsDef && Op.isDef())
+ // Print the 'def' flag only when the operand is defined after '='.
+ OS << "def ";
if (Op.isInternalRead())
OS << "internal ";
if (Op.isDead())
--- /dev/null
+# RUN: llc -march=x86-64 -start-after block-placement -stop-after block-placement -o /dev/null %s | FileCheck %s
+
+--- |
+ define i64 @test(i64 %x, i64 %y) #0 {
+ entry:
+ %x0 = call { i64, i64 } asm "foo", "=r,=r,1,0,~{dirflag},~{fpsr},~{flags}"(i64 %x, i64 %y) #0
+ %x1 = extractvalue { i64, i64 } %x0, 0
+ ret i64 %x1
+ }
+
+ attributes #0 = { nounwind }
+...
+---
+name: test
+hasInlineAsm: true
+tracksRegLiveness: true
+liveins:
+ - { reg: '%rdi' }
+ - { reg: '%rsi' }
+body: |
+ bb.0.entry:
+ liveins: %rdi, %rsi
+
+ ; CHECK-LABEL: name: test
+ ; CHECK: INLINEASM $foo, 0, 2818058, def %rsi, 2818058, def dead %rdi,
+ INLINEASM $foo, 0, 2818058, def %rsi, 2818058, def dead %rdi, 2147549193, killed %rdi, 2147483657, killed %rsi, 12, implicit-def dead early-clobber %eflags
+ %rax = MOV64rr killed %rsi
+ RETQ killed %rax
+...