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6591308b7e
Adds a flag to the MemorySanitizer pass that enables runtime rewriting of indirect calls. This is part of MSanDR implementation and is needed to return control to the DynamiRio-based helper tool on transition between instrumented and non-instrumented modules. Disabled by default. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@191006 91177308-0d34-0410-b5e6-96231b3b80d8
22 lines
906 B
LLVM
22 lines
906 B
LLVM
; RUN: opt < %s -msan -msan-check-access-address=0 -msan-wrap-indirect-calls=zzz -S | FileCheck %s
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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"
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target triple = "x86_64-unknown-linux-gnu"
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; Test for -msan-wrap-indirect-calls functionality.
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; Replaces indirect call to %f with a call to whatever is returned from the
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; wrapper function.
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; This does not depend on the sanitize_memory attribute.
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define i32 @func(i32 (i32, i32)* nocapture %f, i32 %x, i32 %y) {
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entry:
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%call = tail call i32 %f(i32 %x, i32 %y)
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ret i32 %call
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}
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; CHECK: @func
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; CHECK: bitcast i32 (i32, i32)* %f to void ()*
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; CHECK: call void ()* (void ()*)* @zzz(void ()*
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; CHECK: [[A:%[01-9a-z]+]] = bitcast void ()* {{.*}} to i32 (i32, i32)*
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; CHECK: call i32 {{.*}}[[A]](i32 {{.*}}, i32 {{.*}})
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; CHECK: ret i32
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