Demote EmitRawText call in AsmPrinter::EmitInlineAsm() and remove hasRawTextSupport() call

Summary:
AsmPrinter::EmitInlineAsm() will no longer use the EmitRawText() call for targets with mature MC support. Such targets will always parse the inline assembly (even when emitting assembly). Targets without mature MC support continue to use EmitRawText() for assembly output.

The hasRawTextSupport() check in AsmPrinter::EmitInlineAsm() has been replaced with MCAsmInfo::UseIntegratedAs which when true, causes the integrated assembler to parse inline assembly (even when emitting assembly output). UseIntegratedAs is set to true for targets that consider any failure to parse valid assembly to be a bug. Target specific subclasses generally enable the integrated assembler in their constructor. The default value can be overridden with -no-integrated-as.

All tests that rely on inline assembly supporting invalid assembly (for example, those that use mnemonics such as 'foo' or 'hello world') have been updated to disable the integrated assembler.

Reviewers: rafael

Reviewed By: rafael

CC: llvm-commits

Differential Revision: http://llvm-reviews.chandlerc.com/D2686

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@201237 91177308-0d34-0410-b5e6-96231b3b80d8

7 files changed, 28 insertions, 3 deletions

diff --git a/lib/Target/AArch64/MCTargetDesc/AArch64MCAsmInfo.cpp b/lib/Target/AArch64/MCTargetDesc/AArch64MCAsmInfo.cpp
index e9747d6866..189d4eba81 100644
--- a/lib/Target/AArch64/MCTargetDesc/AArch64MCAsmInfo.cpp
+++ b/lib/Target/AArch64/MCTargetDesc/AArch64MCAsmInfo.cpp
@@ -35,6 +35,8 @@ AArch64ELFMCAsmInfo::AArch64ELFMCAsmInfo() {
 
   // Exceptions handling
   ExceptionsType = ExceptionHandling::DwarfCFI;
+
+  UseIntegratedAssembler = true;
 }
 
 // Pin the vtable to this file.
diff --git a/lib/Target/ARM/MCTargetDesc/ARMMCAsmInfo.cpp b/lib/Target/ARM/MCTargetDesc/ARMMCAsmInfo.cpp
index 3c3df1ec6a..4c5f21a054 100644
--- a/lib/Target/ARM/MCTargetDesc/ARMMCAsmInfo.cpp
+++ b/lib/Target/ARM/MCTargetDesc/ARMMCAsmInfo.cpp
@@ -29,6 +29,8 @@ ARMMCAsmInfoDarwin::ARMMCAsmInfoDarwin() {
 
   // Exceptions handling
   ExceptionsType = ExceptionHandling::SjLj;
+
+  UseIntegratedAssembler = true;
 }
 
 void ARMELFMCAsmInfo::anchor() { }
@@ -50,4 +52,6 @@ ARMELFMCAsmInfo::ARMELFMCAsmInfo() {
 
   // foo(plt) instead of foo@plt
   UseParensForSymbolVariant = true;
+
+  UseIntegratedAssembler = true;
 }
diff --git a/lib/Target/PowerPC/MCTargetDesc/PPCMCAsmInfo.cpp b/lib/Target/PowerPC/MCTargetDesc/PPCMCAsmInfo.cpp
index fcd22fa5da..b30ca9e9ab 100644
--- a/lib/Target/PowerPC/MCTargetDesc/PPCMCAsmInfo.cpp
+++ b/lib/Target/PowerPC/MCTargetDesc/PPCMCAsmInfo.cpp
@@ -38,11 +38,13 @@ PPCMCAsmInfoDarwin::PPCMCAsmInfoDarwin(bool is64Bit, const Triple& T) {
   // rather than OS version
   if (T.isMacOSX() && T.isMacOSXVersionLT(10, 6))
     HasWeakDefCanBeHiddenDirective = false;
+
+  UseIntegratedAssembler = true;
 }
 
 void PPCLinuxMCAsmInfo::anchor() { }
 
-PPCLinuxMCAsmInfo::PPCLinuxMCAsmInfo(bool is64Bit) {
+PPCLinuxMCAsmInfo::PPCLinuxMCAsmInfo(bool is64Bit, const Triple& T) {
   if (is64Bit) {
     PointerSize = CalleeSaveStackSlotSize = 8;
   }
@@ -71,5 +73,9 @@ PPCLinuxMCAsmInfo::PPCLinuxMCAsmInfo(bool is64Bit) {
   ZeroDirective = "\t.space\t";
   Data64bitsDirective = is64Bit ? "\t.quad\t" : 0;
   AssemblerDialect = 1;           // New-Style mnemonics.
+
+  if (T.getOS() == llvm::Triple::FreeBSD ||
+      (T.getOS() == llvm::Triple::NetBSD && !is64Bit))
+    UseIntegratedAssembler = true;
 }
 
diff --git a/lib/Target/PowerPC/MCTargetDesc/PPCMCAsmInfo.h b/lib/Target/PowerPC/MCTargetDesc/PPCMCAsmInfo.h
index 6e6152eab3..cee2cb72a9 100644
--- a/lib/Target/PowerPC/MCTargetDesc/PPCMCAsmInfo.h
+++ b/lib/Target/PowerPC/MCTargetDesc/PPCMCAsmInfo.h
@@ -29,7 +29,7 @@ class Triple;
   class PPCLinuxMCAsmInfo : public MCAsmInfoELF {
     virtual void anchor();
   public:
-    explicit PPCLinuxMCAsmInfo(bool is64Bit);
+    explicit PPCLinuxMCAsmInfo(bool is64Bit, const Triple&);
   };
 
 } // namespace llvm
diff --git a/lib/Target/PowerPC/MCTargetDesc/PPCMCTargetDesc.cpp b/lib/Target/PowerPC/MCTargetDesc/PPCMCTargetDesc.cpp
index 57eb4facaa..105c51151f 100644
--- a/lib/Target/PowerPC/MCTargetDesc/PPCMCTargetDesc.cpp
+++ b/lib/Target/PowerPC/MCTargetDesc/PPCMCTargetDesc.cpp
@@ -75,7 +75,7 @@ static MCAsmInfo *createPPCMCAsmInfo(const MCRegisterInfo &MRI, StringRef TT) {
   if (TheTriple.isOSDarwin())
     MAI = new PPCMCAsmInfoDarwin(isPPC64, TheTriple);
   else
-    MAI = new PPCLinuxMCAsmInfo(isPPC64);
+    MAI = new PPCLinuxMCAsmInfo(isPPC64, TheTriple);
 
   // Initial state of the frame pointer is R1.
   unsigned Reg = isPPC64 ? PPC::X1 : PPC::R1;
diff --git a/lib/Target/Sparc/MCTargetDesc/SparcMCAsmInfo.cpp b/lib/Target/Sparc/MCTargetDesc/SparcMCAsmInfo.cpp
index c594868047..ef5f8ce155 100644
--- a/lib/Target/Sparc/MCTargetDesc/SparcMCAsmInfo.cpp
+++ b/lib/Target/Sparc/MCTargetDesc/SparcMCAsmInfo.cpp
@@ -42,6 +42,9 @@ SparcELFMCAsmInfo::SparcELFMCAsmInfo(StringRef TT) {
 
   SunStyleELFSectionSwitchSyntax = true;
   UsesELFSectionDirectiveForBSS = true;
+
+  if (TheTriple.getOS() == llvm::Triple::Solaris)
+    UseIntegratedAssembler = true;
 }
 
 const MCExpr*
diff --git a/lib/Target/X86/MCTargetDesc/X86MCAsmInfo.cpp b/lib/Target/X86/MCTargetDesc/X86MCAsmInfo.cpp
index 7d93555872..6561804661 100644
--- a/lib/Target/X86/MCTargetDesc/X86MCAsmInfo.cpp
+++ b/lib/Target/X86/MCTargetDesc/X86MCAsmInfo.cpp
@@ -76,6 +76,8 @@ X86MCAsmInfoDarwin::X86MCAsmInfoDarwin(const Triple &T) {
   // version in use.  From at least >= ld64-97.17 (Xcode 3.2.6) the abs-ified
   // FDE relocs may be used.
   DwarfFDESymbolsUseAbsDiff = T.isMacOSX() && !T.isMacOSXVersionLT(10, 6);
+
+  UseIntegratedAssembler = true;
 }
 
 X86_64MCAsmInfoDarwin::X86_64MCAsmInfoDarwin(const Triple &Triple)
@@ -114,6 +116,10 @@ X86ELFMCAsmInfo::X86ELFMCAsmInfo(const Triple &T) {
   if ((T.getOS() == Triple::OpenBSD || T.getOS() == Triple::Bitrig) &&
        T.getArch() == Triple::x86)
     Data64bitsDirective = 0;
+
+  // Always enable the integrated assembler by default.
+  // Clang also enabled it when the OS is Solaris but that is redundant here.
+  UseIntegratedAssembler = true;
 }
 
 const MCExpr *
@@ -144,6 +150,8 @@ X86MCAsmInfoMicrosoft::X86MCAsmInfoMicrosoft(const Triple &Triple) {
   TextAlignFillValue = 0x90;
 
   AllowAtInName = true;
+
+  UseIntegratedAssembler = true;
 }
 
 void X86MCAsmInfoGNUCOFF::anchor() { }
@@ -158,4 +166,6 @@ X86MCAsmInfoGNUCOFF::X86MCAsmInfoGNUCOFF(const Triple &Triple) {
 
   // Exceptions handling
   ExceptionsType = ExceptionHandling::DwarfCFI;
+
+  UseIntegratedAssembler = true;
 }