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Diffstat (limited to 'test/Transforms/InstCombine/set.ll')
-rw-r--r-- | test/Transforms/InstCombine/set.ll | 171 |
1 files changed, 171 insertions, 0 deletions
diff --git a/test/Transforms/InstCombine/set.ll b/test/Transforms/InstCombine/set.ll new file mode 100644 index 0000000..daa9148 --- /dev/null +++ b/test/Transforms/InstCombine/set.ll @@ -0,0 +1,171 @@ +; 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 +} + |