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-rw-r--r--test/Instrumentation/MemorySanitizer/wrap_indirect_calls.ll34
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diff --git a/test/Instrumentation/MemorySanitizer/wrap_indirect_calls.ll b/test/Instrumentation/MemorySanitizer/wrap_indirect_calls.ll
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+++ b/test/Instrumentation/MemorySanitizer/wrap_indirect_calls.ll
@@ -0,0 +1,34 @@
+; RUN: opt < %s -msan -msan-check-access-address=0 -msan-wrap-indirect-calls=zzz -msan-wrap-indirect-calls-fast=0 -S | FileCheck %s
+; RUN: opt < %s -msan -msan-check-access-address=0 -msan-wrap-indirect-calls=zzz -msan-wrap-indirect-calls-fast=1 -S | FileCheck -check-prefix=CHECK-FAST %s
+target datalayout = "e-p:64:64:64-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:64:64-f32:32:32-f64:64:64-v64:64:64-v128:128:128-a0:0:64-s0:64:64-f80:128:128-n8:16:32:64-S128"
+target triple = "x86_64-unknown-linux-gnu"
+
+; Test for -msan-wrap-indirect-calls functionality.
+; Replaces indirect call to %f with a call to whatever is returned from the
+; wrapper function.
+
+; This does not depend on the sanitize_memory attribute.
+define i32 @func(i32 (i32, i32)* nocapture %f, i32 %x, i32 %y) {
+entry:
+ %call = tail call i32 %f(i32 %x, i32 %y)
+ ret i32 %call
+}
+
+; CHECK: @func
+; CHECK: bitcast i32 (i32, i32)* %f to void ()*
+; CHECK: call void ()* (void ()*)* @zzz(void ()*
+; CHECK: [[A:%[01-9a-z_.]+]] = bitcast void ()* {{.*}} to i32 (i32, i32)*
+; CHECK: call i32 {{.*}}[[A]](i32 {{.*}}, i32 {{.*}})
+; CHECK: ret i32
+
+; CHECK-FAST: @func
+; CHECK-FAST: bitcast i32 (i32, i32)* %f to void ()*
+; CHECK-FAST-DAG: icmp ult void ()* {{.*}}, bitcast (i32* @__executable_start to void ()*)
+; CHECK-FAST-DAG: icmp uge void ()* {{.*}}, bitcast (i32* @_end to void ()*)
+; CHECK-FAST: or i1
+; CHECK-FAST: br i1
+; CHECK-FAST: call void ()* (void ()*)* @zzz(void ()*
+; CHECK-FAST: br label
+; CHECK-FAST: [[A:%[01-9a-z_.]+]] = phi i32 (i32, i32)* [ %f, %entry ], [ {{.*}} ]
+; CHECK-FAST: call i32 {{.*}}[[A]](i32 {{.*}}, i32 {{.*}})
+; CHECK-FAST: ret i32