Only adjust esp around calls in presence of alloca.

[oota-llvm.git] / lib / Target / TargetAsmInfo.cpp

diff --git a/lib/Target/TargetAsmInfo.cpp b/lib/Target/TargetAsmInfo.cpp
index da477493440ef058adc67929e7857e2a1ddc6f34..df7a2ec78d1487fa1981c539bb6848c43f57cf48 100644 (file)
--- a/lib/Target/TargetAsmInfo.cpp
+++ b/lib/Target/TargetAsmInfo.cpp
@@ -13,13 +13,17 @@
 //===----------------------------------------------------------------------===//
 
 #include "llvm/Target/TargetAsmInfo.h"
+#include <cctype>
+#include <cstring>
 
 using namespace llvm;
 
 TargetAsmInfo::TargetAsmInfo() :
-  TextSection(".text"),
-  DataSection(".data"),
-  BSSSection(".bss"),
+  TextSection("\t.text"),
+  DataSection("\t.data"),
+  BSSSection("\t.bss"),
+  TLSDataSection("\t.section .tdata,\"awT\",@progbits"),
+  TLSBSSSection("\t.section .tbss,\"awT\",@nobits"),
   ZeroFillDirective(0),
   AddressSize(4),
   NeedsSet(false),
@@ -51,8 +55,8 @@ TargetAsmInfo::TargetAsmInfo() :
   TextSectionStartSuffix(""),
   DataSectionStartSuffix(""),
   SectionEndDirectiveSuffix(0),
-  ConstantPoolSection("\t.section .rodata\n"),
-  JumpTableDataSection("\t.section .rodata\n"),
+  ConstantPoolSection("\t.section .rodata"),
+  JumpTableDataSection("\t.section .rodata"),
   JumpTableDirective(0),
   CStringSection(0),
   StaticCtorsSection("\t.section .ctors,\"aw\",@progbits"),
@@ -60,6 +64,7 @@ TargetAsmInfo::TargetAsmInfo() :
   FourByteConstantSection(0),
   EightByteConstantSection(0),
   SixteenByteConstantSection(0),
+  ReadOnlySection(0),
   GlobalDirective(0),
   SetDirective(0),
   LCOMMDirective(0),
@@ -69,10 +74,13 @@ TargetAsmInfo::TargetAsmInfo() :
   UsedDirective(0),
   WeakRefDirective(0),
   HiddenDirective("\t.hidden\t"),
-  AbsoluteSectionOffsets(false),
+  ProtectedDirective("\t.protected\t"),
+  AbsoluteDebugSectionOffsets(false),
+  AbsoluteEHSectionOffsets(false),
   HasLEB128(false),
   HasDotLoc(false),
   HasDotFile(false),
+  SupportsDebugInformation(false),
   SupportsExceptionHandling(false),
   DwarfRequiresFrameSection(true),
   DwarfSectionOffsetDirective(0),
@@ -97,15 +105,27 @@ TargetAsmInfo::~TargetAsmInfo() {
 
 /// Measure the specified inline asm to determine an approximation of its
 /// length.
+/// Comments (which run till the next SeparatorChar or newline) do not
+/// count as an instruction.
+/// Any other non-whitespace text is considered an instruction, with
+/// multiple instructions separated by SeparatorChar or newlines.
+/// Variable-length instructions are not handled here; this function
+/// may be overloaded in the target code to do that.
 unsigned TargetAsmInfo::getInlineAsmLength(const char *Str) const {
   // Count the number of instructions in the asm.
-  unsigned NumInsts = 0;
+  bool atInsnStart = true;
+  unsigned Length = 0;
   for (; *Str; ++Str) {
     if (*Str == '\n' || *Str == SeparatorChar)
-      ++NumInsts;
+      atInsnStart = true;
+    if (atInsnStart && !isspace(*Str)) {
+      Length += MaxInstLength;
+      atInsnStart = false;
+    }
+    if (atInsnStart && strncmp(Str, CommentString, strlen(CommentString))==0)
+      atInsnStart = false;
   }
 
-  // Multiply by the worst-case length for each instruction.
-  return NumInsts * MaxInstLength;
+  return Length;
 }