deab451e7a
Remove support for the icmp and fcmp constant expressions. This is part of: https://discourse.llvm.org/t/rfc-remove-most-constant-expressions/63179 As usual, many of the updated tests will no longer test what they were originally intended to -- this is hard to preserve when constant expressions get removed, and in many cases just impossible as the existence of a specific kind of constant expression was the cause of the issue in the first place.
34 lines
1.2 KiB
LLVM
34 lines
1.2 KiB
LLVM
; Check that we don't replace uses in cmp with wrapper (which would accidentally optimize out the cmp).
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; RUN: opt < %s -passes=dfsan -dfsan-abilist=%S/Inputs/abilist.txt -S | FileCheck %s
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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"
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target triple = "x86_64-unknown-linux-gnu"
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; CHECK: declare extern_weak i8 @ExternWeak(i8)
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declare extern_weak i8 @ExternWeak(i8)
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define noundef i8 @call_if_exists() local_unnamed_addr {
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; CHECK-LABEL: @call_if_exists.dfsan
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; Ensure comparison is preserved
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; CHECK: %cmp = icmp ne [[FUNCPTRTY:.*]] @ExternWeak, null
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%cmp = icmp ne ptr @ExternWeak, null
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br i1 %cmp, label %use_func, label %avoid_func
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use_func:
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; CHECK: use_func:
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; Ensure extern weak function is validated before being called.
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; CHECK: call void @__dfsan_wrapper_extern_weak_null({{[^,]*}}@ExternWeak{{[^,]*}}, {{.*}})
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; CHECK-NEXT: call i8 @ExternWeak(i8 {{.*}})
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%1 = call i8 @ExternWeak(i8 4)
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br label %end
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avoid_func:
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; CHECK: avoid_func:
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br label %end
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end:
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; CHECK: end:
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%r = phi i8 [ %1, %use_func ], [ 0, %avoid_func ]
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ret i8 %r
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}
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