Checking testcases for cee pass

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@3764 91177308-0d34-0410-b5e6-96231b3b80d8

test/Transforms/CorrelatedExprs/Makefile

@@ -0,0 +1,10 @@
+
+LEVEL = ../../../..
+include $(LEVEL)/test/Makefile.tests
+
+TESTS := $(wildcard *.ll)
+
+all:: $(addprefix Output/, $(TESTS:%.ll=%.ll.out))
+
+Output/%.ll.out: %.ll Output/.dir $(LOPT)
+	-$(TESTRUNR) $<

test/Transforms/CorrelatedExprs/basictest.ll

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+; RUN: if as < %s | opt -cee -constprop -instcombine -dce | dis | grep 'REMOVE'
+; RUN: then exit 1
+; RUN: else exit 0
+; RUN: fi
+
+int %test1(int %A) {
+	%cond = seteq int %A, 40
+	br bool %cond, label %T, label %F
+T:
+	%REMOVE = add int %A, 2  ; Should become = 42
+	ret int %REMOVE
+F:
+	ret int 8
+}
+
+bool %test2(int %A) {
+        %cond = seteq int %A, 40
+        br bool %cond, label %T, label %F
+T:
+        %REMOVE = seteq int %A, 2  ; Should become = false
+        ret bool %REMOVE
+F:
+        ret bool false
+}
+
+bool %test3(int %A) {
+        %cond = setlt int %A, 40
+        br bool %cond, label %T, label %F
+T:
+        %REMOVE = setgt int %A, 47  ; Should become = false
+        ret bool %REMOVE
+F:
+        %REMOVE2 = setge int %A, 40  ; Should become = true
+        ret bool %REMOVE2
+}
+
+bool %test4(int %A) {
+        %cond = setlt int %A, 40
+        br bool %cond, label %T, label %F
+T:
+        %REMOVE = setgt int %A, 47  ; Should become = false
+        ret bool %REMOVE
+F:
+        ret bool false
+}
+
+int %test5(int %A, int %B) {
+	%cond = setne int %A, %B
+	br bool %cond, label %F, label %T
+T:
+	%C = sub int %A, %B  ; = 0
+	ret int %C
+F:
+	ret int 0
+}
+
+bool %test6(int %A) {
+        %REMOVE = setlt int %A, 47  ; Should become dead
+        %cond = setlt int %A, 40
+        br bool %cond, label %T, label %F
+T:
+        ret bool %REMOVE  ;; == true
+F:
+        ret bool false
+}
+
+bool %test7(int %A) {
+	%cond = setlt int %A, 40
+	br bool %cond, label %T, label %F
+T:
+	%REMOVE = xor bool %cond, true
+	ret bool %REMOVE
+F:
+	ret bool false
+}
+
+; Test that and expressions are handled...
+bool %test8(int %A, int %B) {
+	%cond1 = setle int %A, 7
+	%cond2 = setle int %B, 7
+	%cond = and bool %cond1, %cond2
+	br bool %cond, label %T, label %F
+T:
+	%REMOVE1 = seteq int %A, 9             ; false
+	%REMOVE2 = setge int %B, 9             ; false
+	%REMOVE = or bool %REMOVE1, %REMOVE2   ; false
+	ret bool %REMOVE
+F:
+	ret bool false
+}
+
+; Test that or expressions are handled...
+bool %test9(int %A, int %B) {
+	%cond1 = setle int %A, 7
+	%cond2 = setle int %B, 7
+	%cond = or bool %cond1, %cond2
+	br bool %cond, label %T, label %F
+T:
+	ret bool false
+F:
+	%REMOVE1 = setge int %A, 8             ; true
+	%REMOVE2 = setge int %B, 8             ; true
+	%REMOVE = or bool %REMOVE1, %REMOVE2   ; true
+	ret bool %REMOVE
+}
+
+bool %test10(int %A) {
+	%cond = setle int %A, 7
+	br bool %cond, label %T, label %F
+T:
+	ret bool false
+F:
+	%REMOVE = setge int %A, 8
+	ret bool %REMOVE
+}
+
+; Implement correlated comparisons against non-constants
+bool %test11(int %A, int %B) {
+	%cond = setlt int %A, %B
+	br bool %cond, label %T, label %F
+T:
+	%REMOVE1 = seteq int %A, %B    ; false
+	%REMOVE2 = setle int %A, %B    ; true
+	%cond2 = and bool %REMOVE1, %REMOVE2
+	ret bool %cond2
+F:
+	ret bool true
+}
+
+bool %test12(int %A) {
+	%cond = setlt int %A, 0
+	br bool %cond, label %T, label %F
+T:
+	%REMOVE = setne int %A, 0    ; true
+	ret bool %REMOVE
+F:
+	ret bool false
+}

test/Transforms/CorrelatedExprs/branchtest.ll

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+; RUN: if as < %s | opt -cee -simplifycfg | dis | grep 'REMOVE'
+; RUN: then exit 1
+; RUN: else exit 0
+; RUN: fi
+
+implementation
+
+declare void %foo(int)
+
+void %test(int %A) {
+bb1:                                    ;[#uses=0]
+        %cond212 = setgt int %A, 9              ; <bool> [#uses=1]
+        br bool %cond212, label %REMOVEbb3, label %bb2
+
+bb2:                                    ;[#uses=1]
+        call void %foo( int 123 )
+        br label %REMOVEbb3
+
+REMOVEbb3:                                    ;[#uses=2]
+        %cond217 = setle int %A, 9            ; <bool> [#uses=1]
+        br bool %cond217, label %REMOVEbb5, label %bb4
+
+bb4:                                    ;[#uses=1]
+        call void %foo( int 234 )
+        br label %REMOVEbb5
+
+REMOVEbb5:                                    ;[#uses=2]
+        %cond222 = setgt int %A, 9             ; <bool> [#uses=1]
+        br bool %cond222, label %bb7, label %REMOVEbb6
+
+REMOVEbb6:                                    ;[#uses=1]
+        call void %foo( int 456 )
+        br label %bb7
+
+bb7:                                    ;[#uses=2]
+        ret void
+}
+