File: msan_llvm_is_constant.ll

package info (click to toggle)
llvm-toolchain-20 1%3A20.1.8-1
  • links: PTS, VCS
  • area: main
  • in suites: experimental
  • size: 2,111,696 kB
  • sloc: cpp: 7,438,781; ansic: 1,393,871; asm: 1,012,926; python: 241,771; f90: 86,635; objc: 75,411; lisp: 42,144; pascal: 17,286; sh: 8,596; ml: 5,082; perl: 4,730; makefile: 3,591; awk: 3,523; javascript: 2,251; xml: 892; fortran: 672
file content (21 lines) | stat: -rw-r--r-- 708 bytes parent folder | download | duplicates (4) 
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
 
; Make sure MSan doesn't insert shadow checks for @llvm.is.constant.* arguments.

; RUN: opt < %s -msan-kernel=1 -S -passes=msan 2>&1 | FileCheck -check-prefixes=CHECK %s
; RUN: opt < %s -S -passes=msan 2>&1 | FileCheck -check-prefixes=CHECK %s

target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128"
target triple = "x86_64-unknown-linux-gnu"

; Function Attrs: nounwind readnone uwtable
define dso_local i32 @bar(i32 %v) local_unnamed_addr sanitize_memory {
entry:
  %0 = tail call i1 @llvm.is.constant.i32(i32 %v)
  %1 = zext i1 %0 to i32
  ret i32 %1
}

; CHECK-LABEL: bar
; CHECK-NOT: call void @__msan_warning_with_origin

; Function Attrs: nounwind readnone
declare i1 @llvm.is.constant.i32(i32)