Imported Upstream version 5.18.0.167

Former-commit-id: 289509151e0fee68a1b591a20c9f109c3c789d3a

external/llvm/test/Analysis/BasicAA/gcsetest.ll

@@ -1,61 +0,0 @@
-; Test that GCSE uses basicaa to do alias analysis, which is capable of
-; disambiguating some obvious cases.  All loads should be removable in
-; this testcase.
-
-; RUN: opt < %s -basicaa -gvn -instcombine -dce -S | FileCheck %s
-
-@A = global i32 7
-@B = global i32 8
-
-; CHECK:      define i32 @test()
-; CHECK-NEXT:   store i32 123, i32* @B
-; CHECK-NEXT:   ret i32 0
-
-define i32 @test() {
-	%A1 = load i32, i32* @A
-
-	store i32 123, i32* @B  ; Store cannot alias @A
-
-	%A2 = load i32, i32* @A
-	%X = sub i32 %A1, %A2
-	ret i32 %X
-}
-
-; CHECK:      define i32 @test2()
-; CHECK-NEXT:   br label %Loop
-; CHECK:      Loop:
-; CHECK-NEXT:   store i32 0, i32* @B
-; CHECK-NEXT:   br i1 true, label %out, label %Loop
-; CHECK:      out:
-; CHECK-NEXT:   ret i32 0
-
-define i32 @test2() {
-        %A1 = load i32, i32* @A
-        br label %Loop
-Loop:
-        %AP = phi i32 [0, %0], [%X, %Loop]
-        store i32 %AP, i32* @B  ; Store cannot alias @A
-
-        %A2 = load i32, i32* @A
-        %X = sub i32 %A1, %A2
-        %c = icmp eq i32 %X, 0
-        br i1 %c, label %out, label %Loop
-
-out:
-        ret i32 %X
-}
-
-declare void @external()
-
-; CHECK:      define i32 @test3()
-; CHECK-NEXT:   call void @external()
-; CHECK-NEXT:   ret i32 7
-
-define i32 @test3() {
-	%X = alloca i32
-	store i32 7, i32* %X
-	call void @external()
-	%V = load i32, i32* %X
-	ret i32 %V
-}
-