tsan: remove compat mapping

There are no known usages anymore, so one less thing to support.



git-svn-id: https://llvm.org/svn/llvm-project/compiler-rt/trunk@213056 91177308-0d34-0410-b5e6-96231b3b80d8

4 files changed, 2 insertions, 47 deletions

diff --git a/lib/tsan/rtl/tsan_interface_ann.cc b/lib/tsan/rtl/tsan_interface_ann.cc
index a1725cb89..742acbbdb 100644
--- a/lib/tsan/rtl/tsan_interface_ann.cc
+++ b/lib/tsan/rtl/tsan_interface_ann.cc
@@ -126,8 +126,6 @@ static ExpectRace *FindRace(ExpectRace *list, uptr addr, uptr size) {
 
 static bool CheckContains(ExpectRace *list, uptr addr, uptr size) {
   ExpectRace *race = FindRace(list, addr, size);
-  if (race == 0 && AlternativeAddress(addr))
-    race = FindRace(list, AlternativeAddress(addr), size);
   if (race == 0)
     return false;
   DPrintf("Hit expected/benign race: %s addr=%zx:%d %s:%d\n",
diff --git a/lib/tsan/rtl/tsan_platform.h b/lib/tsan/rtl/tsan_platform.h
index 7d8d9770e..b1632640a 100644
--- a/lib/tsan/rtl/tsan_platform.h
+++ b/lib/tsan/rtl/tsan_platform.h
@@ -24,20 +24,6 @@ C++ linux memory layout:
 7d00 0000 0000 - 7e00 0000 0000: heap
 7e00 0000 0000 - 7fff ffff ffff: modules and main thread stack
 
-C++ COMPAT linux memory layout:
-0000 0000 0000 - 0400 0000 0000: protected
-0400 0000 0000 - 1000 0000 0000: shadow
-1000 0000 0000 - 2900 0000 0000: protected
-2900 0000 0000 - 2c00 0000 0000: modules
-2c00 0000 0000 - 3000 0000 0000: -
-3000 0000 0000 - 4000 0000 0000: metainfo (memory blocks and sync objects)
-4000 0000 0000 - 6000 0000 0000: -
-6000 0000 0000 - 6200 0000 0000: traces
-6200 0000 0000 - 7d00 0000 0000: -
-7d00 0000 0000 - 7e00 0000 0000: heap
-7e00 0000 0000 - 7f00 0000 0000: -
-7f00 0000 0000 - 7fff ffff ffff: main thread stack
-
 Go linux and darwin memory layout:
 0000 0000 0000 - 0000 1000 0000: executable
 0000 1000 0000 - 00f8 0000 0000: -
@@ -85,18 +71,8 @@ static const uptr kMetaSize       = 0x100000000000ULL;
 #else  // defined(TSAN_GO)
 static const uptr kMetaShadow     = 0x300000000000ULL;
 static const uptr kMetaSize       = 0x100000000000ULL;
-// TSAN_COMPAT_SHADOW is intended for COMPAT virtual memory layout,
-// when memory addresses are of the 0x2axxxxxxxxxx form.
-// The option is enabled with 'setarch x86_64 -L'.
-# if defined(TSAN_COMPAT_SHADOW) && TSAN_COMPAT_SHADOW
-static const uptr kLinuxAppMemBeg = 0x290000000000ULL;
-static const uptr kLinuxAppMemEnd = 0x7fffffffffffULL;
-static const uptr kAppMemGapBeg   = 0x2c0000000000ULL;
-static const uptr kAppMemGapEnd   = 0x7d0000000000ULL;
-# else
 static const uptr kLinuxAppMemBeg = 0x7cf000000000ULL;
 static const uptr kLinuxAppMemEnd = 0x7fffffffffffULL;
-# endif
 #endif
 
 static const uptr kLinuxAppMemMsk = 0x7c0000000000ULL;
@@ -128,10 +104,7 @@ static const uptr kLinuxShadowEnd =
     MemToShadow(kLinuxAppMemEnd) | 0xff;
 
 static inline bool IsAppMem(uptr mem) {
-#if defined(TSAN_COMPAT_SHADOW) && TSAN_COMPAT_SHADOW
-  return (mem >= kLinuxAppMemBeg && mem < kAppMemGapBeg) ||
-         (mem >= kAppMemGapEnd   && mem <= kLinuxAppMemEnd);
-#elif defined(TSAN_GO)
+#if defined(TSAN_GO)
   return mem <= kLinuxAppMemEnd;
 #else
   return mem >= kLinuxAppMemBeg && mem <= kLinuxAppMemEnd;
@@ -151,17 +124,6 @@ static inline uptr ShadowToMem(uptr shadow) {
 #endif
 }
 
-// For COMPAT mapping returns an alternative address
-// that mapped to the same shadow address.
-// COMPAT mapping is not quite one-to-one.
-static inline uptr AlternativeAddress(uptr addr) {
-#if defined(TSAN_COMPAT_SHADOW) && TSAN_COMPAT_SHADOW
-  return (addr & ~kLinuxAppMemMsk) | 0x280000000000ULL;
-#else
-  return 0;
-#endif
-}
-
 void FlushShadowMemory();
 void WriteMemoryProfile(char *buf, uptr buf_size, uptr nthread, uptr nlive);
 uptr GetRSS();
diff --git a/lib/tsan/rtl/tsan_rtl.h b/lib/tsan/rtl/tsan_rtl.h
index 1b590b8c7..7beb4f524 100644
--- a/lib/tsan/rtl/tsan_rtl.h
+++ b/lib/tsan/rtl/tsan_rtl.h
@@ -53,11 +53,7 @@
 namespace __tsan {
 
 #ifndef TSAN_GO
-#if defined(TSAN_COMPAT_SHADOW) && TSAN_COMPAT_SHADOW
 const uptr kAllocatorSpace = 0x7d0000000000ULL;
-#else
-const uptr kAllocatorSpace = 0x7d0000000000ULL;
-#endif
 const uptr kAllocatorSize  =  0x10000000000ULL;  // 1T.
 
 struct MapUnmapCallback;
diff --git a/lib/tsan/rtl/tsan_rtl_report.cc b/lib/tsan/rtl/tsan_rtl_report.cc
index b75c319e0..18b89d83b 100644
--- a/lib/tsan/rtl/tsan_rtl_report.cc
+++ b/lib/tsan/rtl/tsan_rtl_report.cc
@@ -316,8 +316,7 @@ void ScopedReport::AddLocation(uptr addr, uptr size) {
   int fd = -1;
   int creat_tid = -1;
   u32 creat_stack = 0;
-  if (FdLocation(addr, &fd, &creat_tid, &creat_stack)
-      || FdLocation(AlternativeAddress(addr), &fd, &creat_tid, &creat_stack)) {
+  if (FdLocation(addr, &fd, &creat_tid, &creat_stack)) {
     void *mem = internal_alloc(MBlockReportLoc, sizeof(ReportLocation));
     ReportLocation *loc = new(mem) ReportLocation();
     rep_->locs.PushBack(loc);