1 ; RUN: opt < %s -deadargelim -die -S > %t 2 ; RUN: cat %t | grep 123 3 4 ; This test tries to catch wrongful removal of return values for a specific case 5 ; that was breaking llvm-gcc builds. 6 7 ; This function has a live return value, it is used by @alive. 8 define internal i32 @test5() { 9 ret i32 123 10 } 11 12 ; This function doesn't use the return value @test5 and tries to lure DAE into 13 ; marking @test5's return value dead because only this call is unused. 14 define i32 @dead() { 15 %DEAD = call i32 @test5() 16 ret i32 0 17 } 18 19 ; This function ensures the retval of @test5 is live. 20 define i32 @alive() { 21 %LIVE = call i32 @test5() 22 ret i32 %LIVE 23 } 24
