Imported Upstream version 5.18.0.167

Former-commit-id: 289509151e0fee68a1b591a20c9f109c3c789d3a

external/llvm/test/Transforms/Mem2Reg/pr24179.ll

@@ -1,45 +0,0 @@
-; RUN: opt -mem2reg < %s -S | FileCheck %s
-; RUN: opt -passes=mem2reg < %s -S | FileCheck %s
-
-declare i32 @def(i32)
-declare i1 @use(i32)
-
-; Special case of a single-BB alloca does not apply here since the load
-; is affected by the following store. Expect this case to be identified
-; and a PHI node to be created.
-define void @test1() {
-; CHECK-LABEL: @test1(
- entry:
-  %t = alloca i32
-  br label %loop
-
- loop:
-  %v = load i32, i32* %t
-  %c = call i1 @use(i32 %v)
-; CHECK: [[PHI:%.*]] = phi i32 [ undef, %entry ], [ %n, %loop ]
-; CHECK: call i1 @use(i32 [[PHI]])
-  %n = call i32 @def(i32 7)
-  store i32 %n, i32* %t
-  br i1 %c, label %loop, label %exit
-
- exit:
-  ret void
-}
-
-; Same as above, except there is no following store. The alloca should just be
-; replaced with an undef
-define void @test2() {
-; CHECK-LABEL: @test2(
- entry:
-  %t = alloca i32
-  br label %loop
-
- loop:
-  %v = load i32, i32* %t
-  %c = call i1 @use(i32 %v)
-; CHECK: %c = call i1 @use(i32 undef)
-  br i1 %c, label %loop, label %exit
-
- exit:
-  ret void
-}