Imported Upstream version 5.18.0.167

Former-commit-id: 289509151e0fee68a1b591a20c9f109c3c789d3a

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

@@ -1,36 +0,0 @@
-; RUN: opt < %s -basicaa -gvn -instcombine -S | FileCheck %s
-
-declare i32* @test(i32* nocapture)
-
-define i32 @test2() {
-; CHECK: ret i32 0
-       %P = alloca i32
-       %Q = call i32* @test(i32* %P)
-       %a = load i32, i32* %P
-       store i32 4, i32* %Q   ;; cannot clobber P since it is nocapture.
-       %b = load i32, i32* %P
-       %c = sub i32 %a, %b
-       ret i32 %c
-}
-
-declare void @test3(i32** %p, i32* %q) nounwind
-
-define i32 @test4(i32* noalias nocapture %p) nounwind {
-; CHECK: call void @test3
-; CHECK: store i32 0, i32* %p
-; CHECK: store i32 1, i32* %x
-; CHECK: %y = load i32, i32* %p
-; CHECK: ret i32 %y
-entry:
-       %q = alloca i32*
-       ; Here test3 might store %p to %q. This doesn't violate %p's nocapture
-       ; attribute since the copy doesn't outlive the function.
-       call void @test3(i32** %q, i32* %p) nounwind
-       store i32 0, i32* %p
-       %x = load i32*, i32** %q
-       ; This store might write to %p and so we can't eliminate the subsequent
-       ; load
-       store i32 1, i32* %x
-       %y = load i32, i32* %p
-       ret i32 %y
-}