Rebased PNaCl localmods in LLVM to 223109

test/Transforms/NaCl/rewrite-prefetch.ll

+; RUN: opt < %s -rewrite-llvm-intrinsic-calls -S | FileCheck %s
+; RUN: opt < %s -rewrite-llvm-intrinsic-calls -S | FileCheck %s -check-prefix=CLEANED
+; Test the @llvm.prefetch part of the RewriteLLVMIntrinsics pass
+
+declare void @llvm.prefetch(i8 *%ptr, i32 %rw, i32 %locality, i32 %cache_type)
+
+; No declaration or definition of llvm.prefetch() should remain.
+; CLEANED-NOT: @llvm.prefetch
+
+define void @call_prefetch(i8 *%ptr, i32 %rw, i32 %locality, i32 %cache_type) {
+; CHECK: call_prefetch
+; CHECK-NEXT: ret void
+  call void @llvm.prefetch(i8 *%ptr, i32 %rw, i32 %locality, i32 %cache_type)
+  ret void
+}
+
+; A more complex example with a number of calls in several BBs.
+define void @multiple_calls(i8 *%ptr, i32 %rw, i32 %locality, i32 %cache_type) {
+; CHECK: multiple_calls
+entryblock:
+; CHECK: entryblock
+; CHECK-NEXT: br
+  call void @llvm.prefetch(i8 *%ptr, i32 %rw, i32 %locality, i32 %cache_type)
+  br label %block1
+block1:
+; CHECK: block1:
+; CHECK-NEXT: br
+  call void @llvm.prefetch(i8 *%ptr, i32 %rw, i32 %locality, i32 %cache_type)
+  br label %exitblock
+exitblock:
+; CHECK: exitblock:
+; CHECK-NEXT: ret void
+  call void @llvm.prefetch(i8 *%ptr, i32 %rw, i32 %locality, i32 %cache_type)
+  ret void
+}