diff options
| -rw-r--r-- | llvm/lib/Target/X86/X86ISelLowering.cpp | 8 | ||||
| -rw-r--r-- | llvm/lib/Target/X86/X86RegisterInfo.td | 2 | ||||
| -rw-r--r-- | llvm/test/CodeGen/X86/inline-asm-default-clobbers.ll | 8 |
3 files changed, 17 insertions, 1 deletions
diff --git a/llvm/lib/Target/X86/X86ISelLowering.cpp b/llvm/lib/Target/X86/X86ISelLowering.cpp index 18cb4d1a2cb..314fed564c2 100644 --- a/llvm/lib/Target/X86/X86ISelLowering.cpp +++ b/llvm/lib/Target/X86/X86ISelLowering.cpp @@ -43006,6 +43006,14 @@ X86TargetLowering::getRegForInlineAsmConstraint(const TargetRegisterInfo *TRI, if (StringRef("{flags}").equals_lower(Constraint)) return std::make_pair(X86::EFLAGS, &X86::CCRRegClass); + // dirflag -> DF + if (StringRef("{dirflag}").equals_lower(Constraint)) + return std::make_pair(X86::DF, &X86::DFCCRRegClass); + + // fpsr -> FPSW + if (StringRef("{fpsr}").equals_lower(Constraint)) + return std::make_pair(X86::FPSW, &X86::FPCCRRegClass); + // 'A' means [ER]AX + [ER]DX. if (Constraint == "A") { if (Subtarget.is64Bit()) diff --git a/llvm/lib/Target/X86/X86RegisterInfo.td b/llvm/lib/Target/X86/X86RegisterInfo.td index 1deae9aa40d..50aa84ba284 100644 --- a/llvm/lib/Target/X86/X86RegisterInfo.td +++ b/llvm/lib/Target/X86/X86RegisterInfo.td @@ -287,7 +287,7 @@ def ST6 : X86Reg<"st(6)", 6>, DwarfRegNum<[39, 18, 17]>; def ST7 : X86Reg<"st(7)", 7>, DwarfRegNum<[40, 19, 18]>; // Floating-point status word -def FPSW : X86Reg<"fpsw", 0>; +def FPSW : X86Reg<"fpsr", 0>; // Status flags register. // diff --git a/llvm/test/CodeGen/X86/inline-asm-default-clobbers.ll b/llvm/test/CodeGen/X86/inline-asm-default-clobbers.ll new file mode 100644 index 00000000000..34a77ea5fec --- /dev/null +++ b/llvm/test/CodeGen/X86/inline-asm-default-clobbers.ll @@ -0,0 +1,8 @@ +; RUN: llc < %s -mtriple=i686 -stop-after=expand-isel-pseudos | FileCheck %s + +; CHECK: INLINEASM &"", 1, 12, implicit-def early-clobber $df, 12, implicit-def early-clobber $fpsw, 12, implicit-def early-clobber $eflags +define void @foo() { +entry: + call void asm sideeffect "", "~{dirflag},~{fpsr},~{flags}"() + ret void +} |
