[cfe-commits] r153290 - in /cfe/trunk: lib/CodeGen/CGStmt.cpp test/CodeGen/asm-inout.c

[Bill Wendling]

Author: void
Date: Thu Mar 22 18:25:07 2012
New Revision: 153290

URL: http://llvm.org/viewvc/llvm-project?rev=153290&view=rev
Log:
When an MMX output variable is tied to the input variable, we have to implicitly
cast the value to x86_mmx. This gives the ASM string the correct call signature.
<rdar://problem/10919182>

Modified:
    cfe/trunk/lib/CodeGen/CGStmt.cpp
    cfe/trunk/test/CodeGen/asm-inout.c

Modified: cfe/trunk/lib/CodeGen/CGStmt.cpp
URL: http://llvm.org/viewvc/llvm-project/cfe/trunk/lib/CodeGen/CGStmt.cpp?rev=153290&r1=153289&r2=153290&view=diff
==============================================================================
--- cfe/trunk/lib/CodeGen/CGStmt.cpp (original)
+++ cfe/trunk/lib/CodeGen/CGStmt.cpp Thu Mar 22 18:25:07 2012
@@ -1507,6 +1507,11 @@
       llvm::Value *Arg = EmitAsmInputLValue(S, Info, Dest, InputExpr->getType(),
                                             InOutConstraints);
 
+      if (llvm::Type* AdjTy =
+            getTargetHooks().adjustInlineAsmType(*this, OutputConstraint,
+                                                 Arg->getType()))
+        Arg = Builder.CreateBitCast(Arg, AdjTy);
+
       if (Info.allowsRegister())
         InOutConstraints += llvm::utostr(i);
       else
@@ -1565,7 +1570,7 @@
         }
       }
     }
-    if (llvm::Type* AdjTy = 
+    if (llvm::Type* AdjTy =
               getTargetHooks().adjustInlineAsmType(*this, InputConstraint,
                                                    Arg->getType()))
       Arg = Builder.CreateBitCast(Arg, AdjTy);

Modified: cfe/trunk/test/CodeGen/asm-inout.c
URL: http://llvm.org/viewvc/llvm-project/cfe/trunk/test/CodeGen/asm-inout.c?rev=153290&r1=153289&r2=153290&view=diff
==============================================================================
--- cfe/trunk/test/CodeGen/asm-inout.c (original)
+++ cfe/trunk/test/CodeGen/asm-inout.c Thu Mar 22 18:25:07 2012
@@ -37,3 +37,12 @@
   return (int)oldval;
 // CHECK: call i8 asm "frob $0", "=r,0{{.*}}"(i8 -1)
 }
+
+// <rdar://problem/10919182> - This should have both inputs be of type x86_mmx.
+// CHECK: @test5
+typedef long long __m64 __attribute__((__vector_size__(8)));
+__m64 test5(__m64 __A, __m64 __B) {
+  // CHECK: call x86_mmx asm "pmulhuw $1, $0\0A\09", "=y,y,0,~{dirflag},~{fpsr},~{flags}"(x86_mmx %{{.}}, x86_mmx %{{.}})
+  asm("pmulhuw %1, %0\n\t" : "+y" (__A) : "y" (__B));
+  return __A;
+}