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>
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@153290 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/CodeGen/CGStmt.cpp b/lib/CodeGen/CGStmt.cpp
index e65c5f4..670167b 100644
--- a/lib/CodeGen/CGStmt.cpp
+++ b/lib/CodeGen/CGStmt.cpp
@@ -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);
diff --git a/test/CodeGen/asm-inout.c b/test/CodeGen/asm-inout.c
index ce524fe..423bc4e 100644
--- a/test/CodeGen/asm-inout.c
+++ b/test/CodeGen/asm-inout.c
@@ -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;
+}