Merging r199832:

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r199832 | rafael.espindola | 2014-01-22 15:20:52 -0500 (Wed, 22 Jan 2014) | 11 lines

Fix pr18515.

My understanding (from reading just the llvm code) is that
* most ppc cpus have a "sync n" instruction and an msync alias that is
* "sync 0".
* "book e" cpus instead have a msync instruction and not the more
general "sync n"

This patch reflects that in the .td files, allowing a single codepath
for
asm ond obj streamer and incidentelly fixes a crash when EmitRawText was
called on a obj streamer.

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/branches/release_34@205820 91177308-0d34-0410-b5e6-96231b3b80d8

diff --git a/lib/Target/PowerPC/PPCAsmPrinter.cpp b/lib/Target/PowerPC/PPCAsmPrinter.cpp
index ada34ed9e18af0a744b58fb04b36dbe8c0459281..2d92a112d5eff653bfb53c11bf757485e9f18145 100644 (file)
--- a/lib/Target/PowerPC/PPCAsmPrinter.cpp
+++ b/lib/Target/PowerPC/PPCAsmPrinter.cpp
@@ -701,13 +701,6 @@ void PPCAsmPrinter::EmitInstruction(const MachineInstr *MI) {
       return;
     }
     break;
-  case PPC::SYNC:
-    // In Book E sync is called msync, handle this special case here...
-    if (Subtarget.isBookE()) {
-      OutStreamer.EmitRawText(StringRef("\tmsync"));
-      return;
-    }
-    break;
   case PPC::LD:
   case PPC::STD:
   case PPC::LWA_32:

diff --git a/lib/Target/PowerPC/PPCInstrInfo.td b/lib/Target/PowerPC/PPCInstrInfo.td
index 2bd3aadc798d07ceaffd7d4d0715efac4e21ed4b..fc29c69642bf5c7e8ffacc15e804de6f5e33c1a0 100644 (file)
--- a/lib/Target/PowerPC/PPCInstrInfo.td
+++ b/lib/Target/PowerPC/PPCInstrInfo.td
@@ -580,6 +580,7 @@ def iaddroff : ComplexPattern<iPTR, 1, "SelectAddrImmOffs", [], []>;
 def In32BitMode  : Predicate<"!PPCSubTarget.isPPC64()">;
 def In64BitMode  : Predicate<"PPCSubTarget.isPPC64()">;
 def IsBookE  : Predicate<"PPCSubTarget.isBookE()">;
+def IsNotBookE  : Predicate<"!PPCSubTarget.isBookE()">;
 
 //===----------------------------------------------------------------------===//
 // PowerPC Multiclass Definitions.
@@ -1541,8 +1542,17 @@ def STMW : DForm_1<47, (outs), (ins gprc:$rS, memri:$dst),
                    "stmw $rS, $dst", LdStLMW, []>;
 
 def SYNC : XForm_24_sync<31, 598, (outs), (ins i32imm:$L),
-                        "sync $L", LdStSync, []>;
-def : Pat<(int_ppc_sync), (SYNC 0)>;
+                        "sync $L", LdStSync, []>, Requires<[IsNotBookE]>;
+
+let isCodeGenOnly = 1 in {
+  def MSYNC : XForm_24_sync<31, 598, (outs), (ins),
+                           "msync", LdStSync, []>, Requires<[IsBookE]> {
+    let L = 0;
+  }
+}
+
+def : Pat<(int_ppc_sync), (SYNC 0)>, Requires<[IsNotBookE]>;
+def : Pat<(int_ppc_sync), (MSYNC)>, Requires<[IsBookE]>;
 
 //===----------------------------------------------------------------------===//
 // PPC32 Arithmetic Instructions.
@@ -2284,7 +2294,8 @@ def : Pat<(f64 (extloadf32 xaddr:$src)),
 def : Pat<(f64 (fextend f32:$src)),
           (COPY_TO_REGCLASS $src, F8RC)>;
 
-def : Pat<(atomic_fence (imm), (imm)), (SYNC 0)>;
+def : Pat<(atomic_fence (imm), (imm)), (SYNC 0)>, Requires<[IsNotBookE]>;
+def : Pat<(atomic_fence (imm), (imm)), (MSYNC)>, Requires<[IsBookE]>;
 
 // Additional FNMSUB patterns: -a*c + b == -(a*c - b)
 def : Pat<(fma (fneg f64:$A), f64:$C, f64:$B),
@@ -2373,10 +2384,10 @@ class PPCAsmPseudo<string asm, dag iops>
 
 def : InstAlias<"sc", (SC 0)>;
 
-def : InstAlias<"sync", (SYNC 0)>;
-def : InstAlias<"msync", (SYNC 0)>;
-def : InstAlias<"lwsync", (SYNC 1)>;
-def : InstAlias<"ptesync", (SYNC 2)>;
+def : InstAlias<"sync", (SYNC 0)>, Requires<[IsNotBookE]>;
+def : InstAlias<"msync", (SYNC 0)>, Requires<[IsNotBookE]>;
+def : InstAlias<"lwsync", (SYNC 1)>, Requires<[IsNotBookE]>;
+def : InstAlias<"ptesync", (SYNC 2)>, Requires<[IsNotBookE]>;
 
 def : InstAlias<"wait", (WAIT 0)>;
 def : InstAlias<"waitrsv", (WAIT 1)>;