llvm-6502/test/Instrumentation/MemorySanitizer/unreachable.ll
David Blaikie 7c9c6ed761 [opaque pointer type] Add textual IR support for explicit type parameter to load instruction
Essentially the same as the GEP change in r230786.

A similar migration script can be used to update test cases, though a few more
test case improvements/changes were required this time around: (r229269-r229278)

import fileinput
import sys
import re

pat = re.compile(r"((?:=|:|^)\s*load (?:atomic )?(?:volatile )?(.*?))(| addrspace\(\d+\) *)\*($| *(?:%|@|null|undef|blockaddress|getelementptr|addrspacecast|bitcast|inttoptr|\[\[[a-zA-Z]|\{\{).*$)")

for line in sys.stdin:
  sys.stdout.write(re.sub(pat, r"\1, \2\3*\4", line))

Reviewers: rafael, dexonsmith, grosser

Differential Revision: http://reviews.llvm.org/D7649

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@230794 91177308-0d34-0410-b5e6-96231b3b80d8
2015-02-27 21:17:42 +00:00

40 lines
813 B
LLVM

; RUN: opt < %s -msan -S | FileCheck %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 that MemorySanitizer correctly handles unreachable blocks.
define i32 @Func(i32* %p) nounwind uwtable {
entry:
br label %exit
unreachable:
%x = load i32, i32* %p
br label %exit
exit:
%z = phi i32 [ 42, %entry ], [ %x, %unreachable ]
ret i32 %z
}
; CHECK: @Func
; CHECK: store i32 0, {{.*}} @__msan_retval_tls
; CHECK: ret i32 42
define i32 @UnreachableLoop() nounwind uwtable {
entry:
ret i32 0
zzz:
br label %xxx
xxx:
br label %zzz
}
; CHECK: @UnreachableLoop
; CHECK: store i32 0, {{.*}} @__msan_retval_tls
; CHECK: ret i32 0