diff options
Diffstat (limited to 'llvm/test/Instrumentation/MemorySanitizer/pr32842.ll')
| -rw-r--r-- | llvm/test/Instrumentation/MemorySanitizer/pr32842.ll | 20 |
1 files changed, 20 insertions, 0 deletions
diff --git a/llvm/test/Instrumentation/MemorySanitizer/pr32842.ll b/llvm/test/Instrumentation/MemorySanitizer/pr32842.ll new file mode 100644 index 00000000000..5d74c9a193b --- /dev/null +++ b/llvm/test/Instrumentation/MemorySanitizer/pr32842.ll @@ -0,0 +1,20 @@ +; Regression test for https://bugs.llvm.org/show_bug.cgi?id=32842 +; +; RUN: opt < %s -msan -S | FileCheck %s +;target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128" +target triple = "x86_64-unknown-linux-gnu" + +define zeroext i1 @_Z1fii(i32 %x, i32 %y) sanitize_memory { +entry: + %cmp = icmp slt i32 %x, %y + ret i1 %cmp +} + +; CHECK: [[X:[^ ]+]] = load{{.*}}__msan_param_tls{{.*}} +; CHECK: [[Y:[^ ]+]] = load{{.*}}__msan_param_tls{{.*}} +; CHECK: [[OR:[^ ]+]] = or i32 [[Y]], [[X]] + +; Make sure the shadow of the (x < y) comparison isn't truncated to i1. +; CHECK-NOT: trunc i32 [[OR]] to i1 +; CHECK: [[CMP:[^ ]+]] = icmp ne i32 [[OR]], 0 +; CHECK: store i1 [[CMP]],{{.*}}__msan_retval_tls |
