From f792fa90f1125553008659c743cba85b9b5d2e5e Mon Sep 17 00:00:00 2001 From: Jakob Stoklund Olesen Date: Mon, 27 Jun 2011 04:08:33 +0000 Subject: Distinguish early clobber output operands from clobbered registers. Both become defs on the INLINEASM MachineInstr, but we now use two different asm operand kinds. The new Kind_Clobber is treated identically to the old Kind_RegDefEarlyClobber for now, but x87 floating point stack inline assembly does care about the difference. This will pop a register off the stack: asm("fstp %st" : : "t"(x) : "st"); While this will pop the input and push an output: asm("fst %st" : "=&t"(r) : "t"(x)); We need to know if ST0 was a clobber or an output operand, and we can't depend on flags for that. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@133902 91177308-0d34-0410-b5e6-96231b3b80d8 --- lib/CodeGen/MachineInstr.cpp | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) (limited to 'lib/CodeGen/MachineInstr.cpp') diff --git a/lib/CodeGen/MachineInstr.cpp b/lib/CodeGen/MachineInstr.cpp index d4d8202475..938b83dd0e 100644 --- a/lib/CodeGen/MachineInstr.cpp +++ b/lib/CodeGen/MachineInstr.cpp @@ -1443,9 +1443,10 @@ void MachineInstr::print(raw_ostream &OS, const TargetMachine *TM) const { switch (InlineAsm::getKind(Flag)) { case InlineAsm::Kind_RegUse: OS << ":[reguse]"; break; case InlineAsm::Kind_RegDef: OS << ":[regdef]"; break; + case InlineAsm::Kind_RegDefEarlyClobber: OS << ":[regdef-ec]"; break; + case InlineAsm::Kind_Clobber: OS << ":[clobber]"; break; case InlineAsm::Kind_Imm: OS << ":[imm]"; break; case InlineAsm::Kind_Mem: OS << ":[mem]"; break; - case InlineAsm::Kind_RegDefEarlyClobber: OS << ":[regdef-ec]"; break; default: OS << ":[??" << InlineAsm::getKind(Flag) << ']'; break; } -- cgit v1.2.3-70-g09d2