21 lines
		
	
	
		
			460 B
		
	
	
	
		
			LLVM
		
	
	
	
			
		
		
	
	
			21 lines
		
	
	
		
			460 B
		
	
	
	
		
			LLVM
		
	
	
	
; RUN: opt < %s -basicaa -newgvn -S | FileCheck %s
 | 
						|
 | 
						|
%t = type { i32 }
 | 
						|
declare void @test1f(i8*)
 | 
						|
 | 
						|
define void @test1(%t* noalias %stuff ) {
 | 
						|
    %p = getelementptr inbounds %t, %t* %stuff, i32 0, i32 0
 | 
						|
    %before = load i32, i32* %p
 | 
						|
 | 
						|
    call void @test1f(i8* null)
 | 
						|
 | 
						|
    %after = load i32, i32* %p ; <--- This should be a dead load
 | 
						|
    %sum = add i32 %before, %after
 | 
						|
 | 
						|
    store i32 %sum, i32* %p
 | 
						|
    ret void
 | 
						|
; CHECK: load
 | 
						|
; CHECK-NOT: load
 | 
						|
; CHECK: ret void
 | 
						|
}
 |