Imported Upstream version 5.18.0.167

Former-commit-id: 289509151e0fee68a1b591a20c9f109c3c789d3a

external/llvm/test/Instrumentation/DataFlowSanitizer/union.ll

@@ -1,53 +0,0 @@
-; RUN: opt < %s -dfsan -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"
-
-@a = common global i32 0
-@b = common global i32 0
-
-; Check that we reuse unions where possible.
-
-; CHECK-LABEL: @"dfs$f"
-define void @f(i32 %x, i32 %y) {
-  ; CHECK: call{{.*}}__dfsan_union
-  %xay = add i32 %x, %y
-  store i32 %xay, i32* @a
-  ; CHECK-NOT: call{{.*}}__dfsan_union
-  %xmy = mul i32 %x, %y
-  store i32 %xmy, i32* @b
-  ret void
-}
-
-; In this case, we compute the unions on both sides because neither block
-; dominates the other.
-
-; CHECK-LABEL: @"dfs$g"
-define void @g(i1 %p, i32 %x, i32 %y) {
-  br i1 %p, label %l1, label %l2
-
-l1:
-  ; CHECK: call{{.*}}__dfsan_union
-  %xay = add i32 %x, %y
-  store i32 %xay, i32* @a
-  br label %l3
-
-l2:
-  ; CHECK: call{{.*}}__dfsan_union
-  %xmy = mul i32 %x, %y
-  store i32 %xmy, i32* @b
-  br label %l3
-
-l3:
-  ret void
-}
-
-; In this case, we know that the label for %xayax subsumes the label for %xay.
-
-; CHECK-LABEL: @"dfs$h"
-define i32 @h(i32 %x, i32 %y) {
-  ; CHECK: call{{.*}}__dfsan_union
-  %xay = add i32 %x, %y
-  ; CHECK-NOT: call{{.*}}__dfsan_union
-  %xayax = add i32 %xay, %x
-  ret i32 %xayax
-}