Imported Upstream version 5.18.0.207

Former-commit-id: 3b152f462918d427ce18620a2cbe4f8b79650449

external/llvm/test/Transforms/DeadArgElim/deadretval2.ll

@@ -1,59 +0,0 @@
-; RUN: opt < %s -deadargelim -die -S > %t
-; RUN: cat %t | not grep DEAD
-; RUN: cat %t | grep LIVE | count 4
-
-@P = external global i32                ; <i32*> [#uses=1]
-
-; Dead arg only used by dead retval
-define internal i32 @test(i32 %DEADARG) {
-        ret i32 %DEADARG
-}
-
-define internal i32 @test2(i32 %DEADARG) {
-        %DEADRETVAL = call i32 @test( i32 %DEADARG )            ; <i32> [#uses=1]
-        ret i32 %DEADRETVAL
-}
-
-define void @test3(i32 %X) {
-        %DEADRETVAL = call i32 @test2( i32 %X )         ; <i32> [#uses=0]
-        ret void
-}
-
-define internal i32 @foo() {
-        %DEAD = load i32, i32* @P            ; <i32> [#uses=1]
-        ret i32 %DEAD
-}
-
-define internal i32 @id(i32 %X) {
-        ret i32 %X
-}
-
-define void @test4() {
-        %DEAD = call i32 @foo( )                ; <i32> [#uses=1]
-        %DEAD2 = call i32 @id( i32 %DEAD )              ; <i32> [#uses=0]
-        ret void
-}
-
-; These test if returning another functions return value properly marks that
-; other function's return value as live. We do this twice, with the functions in
-; different orders (ie, first the caller, than the callee and first the callee
-; and then the caller) since DAE processes functions one by one and handles
-; these cases slightly different.
-
-define internal i32 @test5() {
-  ret i32 123 
-}
-
-define i32 @test6() {
-  %LIVE = call i32 @test5()
-  ret i32 %LIVE
-}
-
-define i32 @test7() {
-  %LIVE = call i32 @test8()
-  ret i32 %LIVE
-}
-
-define internal i32 @test8() {
-  ret i32 124
-}