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1649380df8
This allows us to add addtional instrumentation before the function start, without splitting the first BB. Differential Revision: https://reviews.llvm.org/D85985
22 lines
766 B
LLVM
22 lines
766 B
LLVM
; Regression test for https://bugs.llvm.org/show_bug.cgi?id=32842
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;
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; RUN: opt < %s -S -passes=msan 2>&1 | FileCheck %s
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; RUN: opt < %s -msan -S | FileCheck %s
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;target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128"
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target triple = "x86_64-unknown-linux-gnu"
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define zeroext i1 @_Z1fii(i32 %x, i32 %y) sanitize_memory {
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entry:
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%cmp = icmp slt i32 %x, %y
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ret i1 %cmp
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}
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; CHECK: [[X:[^ ]+]] = load{{.*}}__msan_param_tls{{.*}}
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; CHECK: [[Y:[^ ]+]] = load{{.*}}__msan_param_tls{{.*}}
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; CHECK: [[OR:[^ ]+]] = or i32 [[X]], [[Y]]
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; Make sure the shadow of the (x < y) comparison isn't truncated to i1.
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; CHECK-NOT: trunc i32 [[OR]] to i1
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; CHECK: [[CMP:[^ ]+]] = icmp ne i32 [[OR]], 0
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; CHECK: store i1 [[CMP]],{{.*}}__msan_retval_tls
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