1; Test for -msan-disable-checks, which should treat every function in the file 2; as if it didn't have the sanitize_memory attribute. 3; RUN: opt < %s -msan-check-access-address=0 -S -passes='module(msan)' 2>&1 | FileCheck -allow-deprecated-dag-overlap -check-prefixes=CHECK,INSTR %s 4; RUN: opt < %s -msan-check-access-address=0 -S -passes='module(msan)' -msan-disable-checks=1 2>&1 | FileCheck -allow-deprecated-dag-overlap -check-prefixes=CHECK,NOSANITIZE %s 5 6target 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" 7target triple = "x86_64-unknown-linux-gnu" 8 9declare void @bar() 10 11define i32 @SanitizeFn(i32 %x) uwtable sanitize_memory { 12entry: 13 %tobool = icmp eq i32 %x, 0 14 br i1 %tobool, label %if.end, label %if.then 15 16if.then: ; preds = %entry 17 tail call void @bar() 18 br label %if.end 19 20if.end: ; preds = %entry, %if.then 21 ret i32 %x 22} 23 24; CHECK-LABEL: @SanitizeFn 25; INSTR: @__msan_warning 26; NOSANITIZE-NOT: @__msan_warning 27; NOSANITIZE: store i32 0, {{.*}} @__msan_retval_tls 28; CHECK: ret i32 29 30 31define i32 @NoSanitizeFn(i32 %x) uwtable { 32entry: 33 %tobool = icmp eq i32 %x, 0 34 br i1 %tobool, label %if.end, label %if.then 35 36if.then: ; preds = %entry 37 tail call void @bar() 38 br label %if.end 39 40if.end: ; preds = %entry, %if.then 41 ret i32 %x 42} 43 44 45; CHECK-LABEL: @NoSanitizeFn 46; CHECK-NOT: @__msan_warning 47; CHECK: store i32 0, {{.*}} @__msan_retval_tls 48; CHECK: ret i32 49 50