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	git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@26468 91177308-0d34-0410-b5e6-96231b3b80d8
		
			
				
	
	
		
			80 lines
		
	
	
		
			1.5 KiB
		
	
	
	
		
			LLVM
		
	
	
	
	
	
			
		
		
	
	
			80 lines
		
	
	
		
			1.5 KiB
		
	
	
	
		
			LLVM
		
	
	
	
	
	
| ; This test makes sure that these instructions are properly eliminated.
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| ;
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| ; RUN: llvm-as < %s | opt -instcombine -disable-output &&
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| ; RUN: llvm-as < %s | opt -instcombine | llvm-dis | not grep rem
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| 
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| implementation
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| 
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| int %test1(int %A) {
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| 	%B = rem int %A, 1    ; ISA constant 0
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| 	ret int %B
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| }
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| 
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| int %test2(int %A) {          ; 0 % X = 0, we don't need to preserve traps
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| 	%B = rem int 0, %A
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| 	ret int %B
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| }
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| 
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| uint %test3(uint %A) {
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| 	%B = rem uint %A, 8   ; & 7
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| 	ret uint %B
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| }
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| 
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| bool %test3(int %A) {
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| 	%B = rem int %A, -8   ; & 7
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| 	%C = setne int %B, 0
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| 	ret bool %C
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| }
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| 
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| uint %test4(uint %X, bool %C) {
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| 	%V = select bool %C, uint 1, uint 8
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| 	%R = rem uint %X, %V
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| 	ret uint %R
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| }
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| 
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| uint %test5(uint %X, ubyte %B) {
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|         %Amt = shl uint 32, ubyte %B
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|         %V = rem uint %X, %Amt
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|         ret uint %V
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| }
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| 
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| int %test6(int %A) {
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| 	%B = rem int %A, 0   ;; undef
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| 	ret int %B
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| }
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| 
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| int %test7(int %A) {
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| 	%B = mul int %A, 26
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| 	%C = rem int %B, 13
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| 	ret int %C
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| }
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| 
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| int %test8(int %A) {
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| 	%B = shl int %A, ubyte 4
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| 	%C = rem int %B, 8 
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| 	ret int %C
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| }
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| 
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| uint %test9(uint %A) {
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| 	%B = mul uint %A, 124
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| 	%C = rem uint %B, 62 
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| 	ret uint %C
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| }
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| 
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| int %test10(ubyte %c) {
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|         %tmp.1 = cast ubyte %c to int
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|         %tmp.2 = mul int %tmp.1, 3
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|         %tmp.3 = cast int %tmp.2 to ulong
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|         %tmp.5 = rem ulong %tmp.3, 3
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|         %tmp.6 = cast ulong %tmp.5 to int
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|         ret int %tmp.6
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| }
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| 
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| int %test11(int %i) {
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|         %tmp.1 = and int %i, -2
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|         %tmp.3 = mul int %tmp.1, 3
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|         %tmp.5 = rem int %tmp.3, 6
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|         ret int %tmp.5
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| }
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| 
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