mirror of
				https://github.com/c64scene-ar/llvm-6502.git
				synced 2025-11-04 05:17:07 +00:00 
			
		
		
		
	input filename so that opt doesn't print the input filename in the output so that grep lines in the tests don't unintentionally match strings in the input filename. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@81537 91177308-0d34-0410-b5e6-96231b3b80d8
		
			
				
	
	
		
			172 lines
		
	
	
		
			4.6 KiB
		
	
	
	
		
			LLVM
		
	
	
	
	
	
			
		
		
	
	
			172 lines
		
	
	
		
			4.6 KiB
		
	
	
	
		
			LLVM
		
	
	
	
	
	
; This test makes sure that these instructions are properly eliminated.
 | 
						|
;
 | 
						|
; RUN: opt < %s -instcombine -S | not grep icmp
 | 
						|
; END.
 | 
						|
	
 | 
						|
@X = external global i32                ; <i32*> [#uses=2]
 | 
						|
 | 
						|
define i1 @test1(i32 %A) {
 | 
						|
        %B = icmp eq i32 %A, %A         ; <i1> [#uses=1]
 | 
						|
        ; Never true
 | 
						|
        %C = icmp eq i32* @X, null              ; <i1> [#uses=1]
 | 
						|
        %D = and i1 %B, %C              ; <i1> [#uses=1]
 | 
						|
        ret i1 %D
 | 
						|
}
 | 
						|
 | 
						|
define i1 @test2(i32 %A) {
 | 
						|
        %B = icmp ne i32 %A, %A         ; <i1> [#uses=1]
 | 
						|
        ; Never false
 | 
						|
        %C = icmp ne i32* @X, null              ; <i1> [#uses=1]
 | 
						|
        %D = or i1 %B, %C               ; <i1> [#uses=1]
 | 
						|
        ret i1 %D
 | 
						|
}
 | 
						|
 | 
						|
define i1 @test3(i32 %A) {
 | 
						|
        %B = icmp slt i32 %A, %A                ; <i1> [#uses=1]
 | 
						|
        ret i1 %B
 | 
						|
}
 | 
						|
 | 
						|
 | 
						|
define i1 @test4(i32 %A) {
 | 
						|
        %B = icmp sgt i32 %A, %A                ; <i1> [#uses=1]
 | 
						|
        ret i1 %B
 | 
						|
}
 | 
						|
 | 
						|
define i1 @test5(i32 %A) {
 | 
						|
        %B = icmp sle i32 %A, %A                ; <i1> [#uses=1]
 | 
						|
        ret i1 %B
 | 
						|
}
 | 
						|
 | 
						|
define i1 @test6(i32 %A) {
 | 
						|
        %B = icmp sge i32 %A, %A                ; <i1> [#uses=1]
 | 
						|
        ret i1 %B
 | 
						|
}
 | 
						|
 | 
						|
define i1 @test7(i32 %A) {
 | 
						|
        ; true
 | 
						|
        %B = icmp uge i32 %A, 0         ; <i1> [#uses=1]
 | 
						|
        ret i1 %B
 | 
						|
}
 | 
						|
 | 
						|
define i1 @test8(i32 %A) {
 | 
						|
        ; false
 | 
						|
        %B = icmp ult i32 %A, 0         ; <i1> [#uses=1]
 | 
						|
        ret i1 %B
 | 
						|
}
 | 
						|
 | 
						|
;; test operations on boolean values these should all be eliminated$a
 | 
						|
define i1 @test9(i1 %A) {
 | 
						|
        ; false
 | 
						|
        %B = icmp ult i1 %A, false              ; <i1> [#uses=1]
 | 
						|
        ret i1 %B
 | 
						|
}
 | 
						|
 | 
						|
define i1 @test10(i1 %A) {
 | 
						|
        ; false
 | 
						|
        %B = icmp ugt i1 %A, true               ; <i1> [#uses=1]
 | 
						|
        ret i1 %B
 | 
						|
}
 | 
						|
 | 
						|
define i1 @test11(i1 %A) {
 | 
						|
        ; true
 | 
						|
        %B = icmp ule i1 %A, true               ; <i1> [#uses=1]
 | 
						|
        ret i1 %B
 | 
						|
}
 | 
						|
 | 
						|
define i1 @test12(i1 %A) {
 | 
						|
        ; true
 | 
						|
        %B = icmp uge i1 %A, false              ; <i1> [#uses=1]
 | 
						|
        ret i1 %B
 | 
						|
}
 | 
						|
 | 
						|
define i1 @test13(i1 %A, i1 %B) {
 | 
						|
        ; A | ~B
 | 
						|
        %C = icmp uge i1 %A, %B         ; <i1> [#uses=1]
 | 
						|
        ret i1 %C
 | 
						|
}
 | 
						|
 | 
						|
define i1 @test14(i1 %A, i1 %B) {
 | 
						|
        ; ~(A ^ B)
 | 
						|
        %C = icmp eq i1 %A, %B          ; <i1> [#uses=1]
 | 
						|
        ret i1 %C
 | 
						|
}
 | 
						|
 | 
						|
define i1 @test16(i32 %A) {
 | 
						|
        %B = and i32 %A, 5              ; <i32> [#uses=1]
 | 
						|
        ; Is never true
 | 
						|
        %C = icmp eq i32 %B, 8          ; <i1> [#uses=1]
 | 
						|
        ret i1 %C
 | 
						|
}
 | 
						|
 | 
						|
define i1 @test17(i8 %A) {
 | 
						|
        %B = or i8 %A, 1                ; <i8> [#uses=1]
 | 
						|
        ; Always false
 | 
						|
        %C = icmp eq i8 %B, 2           ; <i1> [#uses=1]
 | 
						|
        ret i1 %C
 | 
						|
}
 | 
						|
 | 
						|
define i1 @test18(i1 %C, i32 %a) {
 | 
						|
entry:
 | 
						|
        br i1 %C, label %endif, label %else
 | 
						|
 | 
						|
else:           ; preds = %entry
 | 
						|
        br label %endif
 | 
						|
 | 
						|
endif:          ; preds = %else, %entry
 | 
						|
        %b.0 = phi i32 [ 0, %entry ], [ 1, %else ]              ; <i32> [#uses=1]
 | 
						|
        %tmp.4 = icmp slt i32 %b.0, 123         ; <i1> [#uses=1]
 | 
						|
        ret i1 %tmp.4
 | 
						|
}
 | 
						|
 | 
						|
define i1 @test19(i1 %A, i1 %B) {
 | 
						|
        %a = zext i1 %A to i32          ; <i32> [#uses=1]
 | 
						|
        %b = zext i1 %B to i32          ; <i32> [#uses=1]
 | 
						|
        %C = icmp eq i32 %a, %b         ; <i1> [#uses=1]
 | 
						|
        ret i1 %C
 | 
						|
}
 | 
						|
 | 
						|
define i32 @test20(i32 %A) {
 | 
						|
        %B = and i32 %A, 1              ; <i32> [#uses=1]
 | 
						|
        %C = icmp ne i32 %B, 0          ; <i1> [#uses=1]
 | 
						|
        %D = zext i1 %C to i32          ; <i32> [#uses=1]
 | 
						|
        ret i32 %D
 | 
						|
}
 | 
						|
 | 
						|
define i32 @test21(i32 %a) {
 | 
						|
        %tmp.6 = and i32 %a, 4          ; <i32> [#uses=1]
 | 
						|
        %not.tmp.7 = icmp ne i32 %tmp.6, 0              ; <i1> [#uses=1]
 | 
						|
        %retval = zext i1 %not.tmp.7 to i32             ; <i32> [#uses=1]
 | 
						|
        ret i32 %retval
 | 
						|
}
 | 
						|
 | 
						|
define i1 @test22(i32 %A, i32 %X) {
 | 
						|
        %B = and i32 %A, 100663295              ; <i32> [#uses=1]
 | 
						|
        %C = icmp ult i32 %B, 268435456         ; <i1> [#uses=1]
 | 
						|
        %Y = and i32 %X, 7              ; <i32> [#uses=1]
 | 
						|
        %Z = icmp sgt i32 %Y, -1                ; <i1> [#uses=1]
 | 
						|
        %R = or i1 %C, %Z               ; <i1> [#uses=1]
 | 
						|
        ret i1 %R
 | 
						|
}
 | 
						|
 | 
						|
define i32 @test23(i32 %a) {
 | 
						|
        %tmp.1 = and i32 %a, 1          ; <i32> [#uses=1]
 | 
						|
        %tmp.2 = icmp eq i32 %tmp.1, 0          ; <i1> [#uses=1]
 | 
						|
        %tmp.3 = zext i1 %tmp.2 to i32          ; <i32> [#uses=1]
 | 
						|
        ret i32 %tmp.3
 | 
						|
}
 | 
						|
 | 
						|
define i32 @test24(i32 %a) {
 | 
						|
        %tmp1 = and i32 %a, 4           ; <i32> [#uses=1]
 | 
						|
        %tmp.1 = lshr i32 %tmp1, 2              ; <i32> [#uses=1]
 | 
						|
        %tmp.2 = icmp eq i32 %tmp.1, 0          ; <i1> [#uses=1]
 | 
						|
        %tmp.3 = zext i1 %tmp.2 to i32          ; <i32> [#uses=1]
 | 
						|
        ret i32 %tmp.3
 | 
						|
}
 | 
						|
 | 
						|
define i1 @test25(i32 %A) {
 | 
						|
        %B = and i32 %A, 2              ; <i32> [#uses=1]
 | 
						|
        %C = icmp ugt i32 %B, 2         ; <i1> [#uses=1]
 | 
						|
        ret i1 %C
 | 
						|
}
 | 
						|
 |