Add more testcases for ADCE

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@2715 91177308-0d34-0410-b5e6-96231b3b80d8

test/Transforms/ADCE/adcetest.ll

@@ -1,7 +1,7 @@
 ; This is the test case taken from Appel's book that illustrates a hard case
 ; that SCCP gets right, and when followed by ADCE, is completely eliminated
 ;
-; RUN: if as < %s | opt -sccp -adce | dis | grep br
+; RUN: if as < %s | opt -sccp -adce -simplifycfg | dis | grep br
 ; RUN: then exit 1
 ; RUN: else exit 0
 ; RUN: fi

test/Transforms/ADCE/basictest.ll

@@ -0,0 +1,14 @@
+; RUN: as < %s | opt -adce -simplifycfg | dis
+
+int "Test"(int %A, int %B) {
+BB1:
+	br label %BB4
+BB2:
+	br label %BB3
+BB3:
+	%ret = phi int [%X, %BB4], [%B, %BB2]
+	ret int %ret
+BB4:
+	%X = phi int [%A, %BB1]
+	br label %BB3
+}

test/Transforms/ADCE/basictest1.ll

@@ -0,0 +1,96 @@
+; RUN: as < %s | opt -adce -simplifycfg | dis
+	
+%FILE = type { int, ubyte*, ubyte*, ubyte, ubyte, uint, uint, uint }
+	%spec_fd_t = type { int, int, int, ubyte* }
+%__iob = uninitialized global [20 x %FILE]		; <[20 x %FILE]*> [#uses=1]
+%dbglvl = global int 4		; <int*> [#uses=3]
+%spec_fd = uninitialized global [3 x %spec_fd_t]		; <[3 x %spec_fd_t]*> [#uses=4]
+%.LC9 = internal global [34 x sbyte] c"spec_read: fd=%d, > MAX_SPEC_FD!\0A\00"		; <[34 x sbyte]*> [#uses=1]
+%.LC10 = internal global [4 x sbyte] c"EOF\00"		; <[4 x sbyte]*> [#uses=1]
+%.LC11 = internal global [4 x sbyte] c"%d\0A\00"		; <[4 x sbyte]*> [#uses=1]
+%.LC12 = internal global [17 x sbyte] c"spec_getc: %d = \00"		; <[17 x sbyte]*> [#uses=1]
+
+implementation   ; Functions:
+
+declare int "fprintf"(%FILE*, sbyte*, ...)
+
+declare void "exit"(int)
+
+declare int "remove"(sbyte*)
+
+declare int "fputc"(int, %FILE*)
+
+declare uint "fwrite"(sbyte*, uint, uint, %FILE*)
+
+declare void "perror"(sbyte*)
+
+int "spec_getc"(int %fd) {
+; <label>:0					;[#uses=0]
+	%reg109 = load int* %dbglvl		; <int> [#uses=1]
+	%cond266 = setle int %reg109, 4		; <bool> [#uses=1]
+	br bool %cond266, label %bb3, label %bb2
+
+bb2:					;[#uses=1]
+	%cast273 = getelementptr [17 x sbyte]* %.LC12, uint 0, uint 0		; <sbyte*> [#uses=0]
+	br label %bb3
+
+bb3:					;[#uses=2]
+	%cond267 = setle int %fd, 3		; <bool> [#uses=1]
+	br bool %cond267, label %bb5, label %bb4
+
+bb4:					;[#uses=2]
+	%reg111 = getelementptr [20 x %FILE]* %__iob, uint 0, uint 1, ubyte 3		; <ubyte*> [#uses=1]
+	%cast274 = getelementptr [34 x sbyte]* %.LC9, uint 0, uint 0		; <sbyte*> [#uses=0]
+	%cast282 = cast ubyte* %reg111 to %FILE*		; <%FILE*> [#uses=0]
+	call void %exit( int 1 )
+	br label %UnifiedExitNode
+
+bb5:					;[#uses=1]
+	%reg107-idxcast1 = cast int %fd to uint		; <uint> [#uses=2]
+	%reg107-idxcast2 = cast int %fd to uint		; <uint> [#uses=1]
+	%reg1311 = getelementptr [3 x %spec_fd_t]* %spec_fd, uint 0, uint %reg107-idxcast2		; <%spec_fd_t*> [#uses=1]
+	%reg1321 = load [3 x %spec_fd_t]* %spec_fd, uint 0, uint %reg107-idxcast1, ubyte 2		; <int> [#uses=3]
+	%reg1331 = load %spec_fd_t* %reg1311, uint 0, ubyte 1		; <int> [#uses=1]
+	%cond270 = setlt int %reg1321, %reg1331		; <bool> [#uses=1]
+	br bool %cond270, label %bb9, label %bb6
+
+bb6:					;[#uses=1]
+	%reg134 = load int* %dbglvl		; <int> [#uses=1]
+	%cond271 = setle int %reg134, 4		; <bool> [#uses=1]
+	br bool %cond271, label %bb8, label %bb7
+
+bb7:					;[#uses=1]
+	%cast277 = getelementptr [4 x sbyte]* %.LC10, uint 0, uint 0		; <sbyte*> [#uses=0]
+	br label %bb8
+
+bb8:					;[#uses=3]
+	br label %UnifiedExitNode
+
+bb9:					;[#uses=1]
+	%reg107-idxcast3 = cast int %fd to uint		; <uint> [#uses=1]
+	%reg1601 = load [3 x %spec_fd_t]* %spec_fd, uint 0, uint %reg107-idxcast3, ubyte 3		; <ubyte*> [#uses=1]
+	%reg132-idxcast1 = cast int %reg1321 to uint		; <uint> [#uses=1]
+	%reg1621 = load ubyte* %reg1601, uint %reg132-idxcast1		; <ubyte> [#uses=2]
+	%cast108 = cast ubyte %reg1621 to uint		; <uint> [#uses=0]
+	%reg157 = add int %reg1321, 1		; <int> [#uses=1]
+	store int %reg157, [3 x %spec_fd_t]* %spec_fd, uint 0, uint %reg107-idxcast1, ubyte 2
+	%reg163 = load int* %dbglvl		; <int> [#uses=1]
+	%cond272 = setle int %reg163, 4		; <bool> [#uses=1]
+	br bool %cond272, label %bb11, label %bb10
+
+bb10:					;[#uses=1]
+	%cast279 = getelementptr [4 x sbyte]* %.LC11, uint 0, uint 0		; <sbyte*> [#uses=0]
+	br label %bb11
+
+bb11:					;[#uses=3]
+	%cast291 = cast ubyte %reg1621 to int		; <int> [#uses=1]
+	br label %UnifiedExitNode
+
+UnifiedExitNode:					;[#uses=3]
+	%UnifiedRetVal = phi int [ 42, %bb4 ], [ -1, %bb8 ], [ %cast291, %bb11 ]		; <int> [#uses=1]
+	ret int %UnifiedRetVal
+}
+
+declare int "puts"(sbyte*)
+
+declare int "printf"(sbyte*, ...)

test/Transforms/ADCE/basictest2.ll

@@ -0,0 +1,97 @@
+; RUN: as < %s | opt -adce -simplifycfg | dis	
+
+%FILE = type { int, ubyte*, ubyte*, ubyte, ubyte, uint, uint, uint }
+	%spec_fd_t = type { int, int, int, ubyte* }
+%__iob = uninitialized global [20 x %FILE]		; <[20 x %FILE]*> [#uses=1]
+%dbglvl = global int 4		; <int*> [#uses=3]
+%spec_fd = uninitialized global [3 x %spec_fd_t]		; <[3 x %spec_fd_t]*> [#uses=4]
+%.LC9 = internal global [34 x sbyte] c"spec_read: fd=%d, > MAX_SPEC_FD!\0A\00"		; <[34 x sbyte]*> [#uses=1]
+%.LC10 = internal global [4 x sbyte] c"EOF\00"		; <[4 x sbyte]*> [#uses=1]
+%.LC11 = internal global [4 x sbyte] c"%d\0A\00"		; <[4 x sbyte]*> [#uses=1]
+%.LC12 = internal global [17 x sbyte] c"spec_getc: %d = \00"		; <[17 x sbyte]*> [#uses=1]
+
+implementation   ; Functions:
+
+declare int "fprintf"(%FILE*, sbyte*, ...)
+
+declare void "exit"(int)
+
+declare int "remove"(sbyte*)
+
+declare int "fputc"(int, %FILE*)
+
+declare uint "fwrite"(sbyte*, uint, uint, %FILE*)
+
+declare void "perror"(sbyte*)
+
+int "spec_getc"(int %fd) {
+; <label>:0					;[#uses=0]
+	%reg109 = load int* %dbglvl		; <int> [#uses=1]
+	%cond266 = setle int %reg109, 4		; <bool> [#uses=1]
+	br bool %cond266, label %bb3, label %bb2
+
+bb2:					;[#uses=1]
+	%cast273 = getelementptr [17 x sbyte]* %.LC12, uint 0, uint 0		; <sbyte*> [#uses=0]
+	br label %bb3
+
+bb3:					;[#uses=2]
+	%cond267 = setle int %fd, 3		; <bool> [#uses=1]
+;	br bool %cond267, label %bb5, label %bb4
+	br label %bb5
+
+bb4:					;[#uses=2]
+	%reg111 = getelementptr [20 x %FILE]* %__iob, uint 0, uint 1, ubyte 3		; <ubyte*> [#uses=1]
+	%cast274 = getelementptr [34 x sbyte]* %.LC9, uint 0, uint 0		; <sbyte*> [#uses=0]
+	%cast282 = cast ubyte* %reg111 to %FILE*		; <%FILE*> [#uses=0]
+	call void %exit( int 1 )
+	br label %UnifiedExitNode
+
+bb5:					;[#uses=1]
+	%reg107-idxcast1 = cast int %fd to uint		; <uint> [#uses=2]
+	%reg107-idxcast2 = cast int %fd to uint		; <uint> [#uses=1]
+	%reg1311 = getelementptr [3 x %spec_fd_t]* %spec_fd, uint 0, uint %reg107-idxcast2		; <%spec_fd_t*> [#uses=1]
+	%reg1321 = load [3 x %spec_fd_t]* %spec_fd, uint 0, uint %reg107-idxcast1, ubyte 2		; <int> [#uses=3]
+	%reg1331 = load %spec_fd_t* %reg1311, uint 0, ubyte 1		; <int> [#uses=1]
+	%cond270 = setlt int %reg1321, %reg1331		; <bool> [#uses=1]
+	br bool %cond270, label %bb9, label %bb6
+
+bb6:					;[#uses=1]
+	%reg134 = load int* %dbglvl		; <int> [#uses=1]
+	%cond271 = setle int %reg134, 4		; <bool> [#uses=1]
+	br bool %cond271, label %bb8, label %bb7
+
+bb7:					;[#uses=1]
+	%cast277 = getelementptr [4 x sbyte]* %.LC10, uint 0, uint 0		; <sbyte*> [#uses=0]
+	br label %bb8
+
+bb8:					;[#uses=3]
+	br label %UnifiedExitNode
+
+bb9:					;[#uses=1]
+	%reg107-idxcast3 = cast int %fd to uint		; <uint> [#uses=1]
+	%reg1601 = load [3 x %spec_fd_t]* %spec_fd, uint 0, uint %reg107-idxcast3, ubyte 3		; <ubyte*> [#uses=1]
+	%reg132-idxcast1 = cast int %reg1321 to uint		; <uint> [#uses=1]
+	%reg1621 = load ubyte* %reg1601, uint %reg132-idxcast1		; <ubyte> [#uses=2]
+	%cast108 = cast ubyte %reg1621 to uint		; <uint> [#uses=0]
+	%reg157 = add int %reg1321, 1		; <int> [#uses=1]
+	store int %reg157, [3 x %spec_fd_t]* %spec_fd, uint 0, uint %reg107-idxcast1, ubyte 2
+	%reg163 = load int* %dbglvl		; <int> [#uses=1]
+	%cond272 = setle int %reg163, 4		; <bool> [#uses=1]
+	br bool %cond272, label %bb11, label %bb10
+
+bb10:					;[#uses=1]
+	%cast279 = getelementptr [4 x sbyte]* %.LC11, uint 0, uint 0		; <sbyte*> [#uses=0]
+	br label %bb11
+
+bb11:					;[#uses=3]
+	%cast291 = cast ubyte %reg1621 to int		; <int> [#uses=1]
+	br label %UnifiedExitNode
+
+UnifiedExitNode:					;[#uses=3]
+	%UnifiedRetVal = phi int [ 42, %bb4 ], [ -1, %bb8 ], [ %cast291, %bb11 ]		; <int> [#uses=1]
+	ret int %UnifiedRetVal
+}
+
+declare int "puts"(sbyte*)
+
+declare int "printf"(sbyte*, ...)