25 lines
		
	
	
		
			638 B
		
	
	
	
		
			LLVM
		
	
	
	
			
		
		
	
	
			25 lines
		
	
	
		
			638 B
		
	
	
	
		
			LLVM
		
	
	
	
| ; RUN: llc < %s -march=arm -mattr=+v6 | grep uxtb | count 1
 | |
| ; RUN: llc < %s -march=arm -mattr=+v6 | grep uxtab | count 1
 | |
| ; RUN: llc < %s -march=arm -mattr=+v6 | grep uxth | count 1
 | |
| 
 | |
| define zeroext i8 @test1(i32 %A.u) {
 | |
|     %B.u = trunc i32 %A.u to i8
 | |
|     ret i8 %B.u
 | |
| }
 | |
| 
 | |
| define zeroext i32 @test2(i32 %A.u, i32 %B.u) {
 | |
|     %C.u = trunc i32 %B.u to i8
 | |
|     %D.u = zext i8 %C.u to i32
 | |
|     %E.u = add i32 %A.u, %D.u
 | |
|     ret i32 %E.u
 | |
| }
 | |
| 
 | |
| define zeroext i32 @test3(i32 %A.u) {
 | |
|     %B.u = lshr i32 %A.u, 8
 | |
|     %C.u = shl i32 %A.u, 24
 | |
|     %D.u = or i32 %B.u, %C.u
 | |
|     %E.u = trunc i32 %D.u to i16
 | |
|     %F.u = zext i16 %E.u to i32
 | |
|     ret i32 %F.u
 | |
| }
 |