New testcase distilled from:

[oota-llvm.git] / test / Transforms / InstCombine / or.ll

diff --git a/test/Transforms/InstCombine/or.ll b/test/Transforms/InstCombine/or.ll
index 838e75ec1dc1063c814c4d02517ede4c791210f1..e4d5bb7df801c4ca5592256a082e393fcd3ee1be 100644 (file)
--- a/test/Transforms/InstCombine/or.ll
+++ b/test/Transforms/InstCombine/or.ll
@@ -1,7 +1,7 @@
 ; This test makes sure that these instructions are properly eliminated.
 ;
 
-; RUN: as < %s | opt -instcombine | dis | grep -v '%OROK = or' | not grep 'or '
+; RUN: llvm-as < %s | opt -instcombine | llvm-dis | grep -v xor | not grep 'or '
 
 implementation
 
@@ -31,101 +31,42 @@ bool %test4(bool %A) {
 }
 
 bool %test5(bool %A) {
-       %B = xor bool %A, false
-       ret bool %B
-}
-
-int %test6(int %A) {
-       %B = xor int %A, 0
-       ret int %B
-}
-
-bool %test7(bool %A) {
-       %B = xor bool %A, %A
-       ret bool %B
-}
-
-int %test8(int %A) {
-       %B = xor int %A, %A
-       ret int %B
-}
-
-bool %test9(bool %A) {
        %B = or bool %A, %A
        ret bool %B
 }
 
-int %test10(int %A) {
+int %test6(int %A) {
        %B = or int %A, %A
        ret int %B
 }
 
-int %test11(int %A) {    ; A ^ ~A == -1
-        %NotA = xor int -1, %A
-        %B = xor int %A, %NotA
-        ret int %B
-}
-
-int %test12(int %A) {    ; A | ~A == -1
+int %test7(int %A) {    ; A | ~A == -1
         %NotA = xor int -1, %A
         %B = or int %A, %NotA
         ret int %B
 }
 
-uint %test13(uint %A) { ; (A|B)^B == A & (~B)
-       %t1 = or uint %A, 123
-       %r  = xor uint %t1, 123
-       ret uint %r
-}
-
-ubyte %test14(ubyte %A) {
+ubyte %test8(ubyte %A) {
        %B = or ubyte %A, 254
        %C = or ubyte %B, 1
        ret ubyte %C
 }
-ubyte %test15(ubyte %A) {
-       %B = xor ubyte %A, 17
-       %C = xor ubyte %B, 17
-       ret ubyte %C
-}
 
-int %test16(int %A, int %B) {     ; (A & C1)^(B & C2) -> (A & C1)|(B & C2) iff C1&C2 == 0
-        %A1 = and int %A, 7
-        %B1 = and int %B, 128
-        %OROK = xor int %A1, %B1
-        ret int %OROK
-}
-
-ubyte %test17(ubyte %A, ubyte %B) {  ; Test that (A|c1)|(B|c2) == (A|B)|(c1|c2)
+ubyte %test9(ubyte %A, ubyte %B) {  ; Test that (A|c1)|(B|c2) == (A|B)|(c1|c2)
        %C = or ubyte %A, 1
        %D = or ubyte %B, 254
        %E = or ubyte %C, %D
        ret ubyte %E
 }
 
-ubyte %test18(bool %c) {
-       %d = xor bool %c, true    ; invert the condition
-       br bool %d, label %True, label %False
-True:
-       ret ubyte 1
-False:
-       ret ubyte 3
-}
-
-bool %test19(ubyte %A) {
-       %B = xor ubyte %A, 123      ; xor can be eliminated
-       %C = seteq ubyte %B, 34
-       ret bool %C
-}
-
-ubyte %test21(ubyte %A) {
+ubyte %test10(ubyte %A) {
        %B = or ubyte %A, 1
        %C = and ubyte %B, 254
        %D = or ubyte %C, 254  ; (X & C1) | C2 --> (X | C2) & (C1|C2)
        ret ubyte %D
 }
 
-ubyte %test22(ubyte %A) {
+ubyte %test11(ubyte %A) {
        %B = or ubyte %A, 254
        %C = xor ubyte %B, 13
        %D = or ubyte %C, 1    ; (X ^ C1) | C2 --> (X | C2) ^ (C1&~C2)
@@ -133,15 +74,42 @@ ubyte %test22(ubyte %A) {
        ret ubyte %E
 }
 
-uint %test23(uint %A) {
+uint %test12(uint %A) {
        %B = or uint %A, 4     ; Should be eliminated
        %C = and uint %B, 8
        ret uint %C
 }
 
-uint %test24(uint %A) {
+uint %test13(uint %A) {
        %B = or uint %A, 12
        %C = and uint %B, 8    ; Always equal to 8
        ret uint %C 
 }
 
+bool %test14(uint %A, uint %B) {
+       %C1 = setlt uint %A, %B
+       %C2 = setgt uint %A, %B
+       %D = or bool %C1, %C2      ; (A < B) | (A > B) === A != B
+       ret bool %D
+}
+
+bool %test15(uint %A, uint %B) {
+        %C1 = setlt uint %A, %B
+        %C2 = seteq uint %A, %B
+        %D = or bool %C1, %C2      ; (A < B) | (A == B) === A <= B
+        ret bool %D
+}
+
+int %test16(int %A) {
+       %B = and int %A, 1
+       %C = and int %A, -2       ; -2 = ~1
+       %D = or int %B, %C        ; %D = and int %B, -1 == %B
+       ret int %D
+}
+
+int %test17(int %A) {
+       %B = and int %A, 1
+       %C = and int %A, 4
+       %D = or int %B, %C        ; %D = and int %B, 5
+       ret int %D
+}