mirror of
https://github.com/c64scene-ar/llvm-6502.git
synced 2024-08-18 12:29:21 +00:00
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@48103 91177308-0d34-0410-b5e6-96231b3b80d8
172 lines
4.7 KiB
LLVM
172 lines
4.7 KiB
LLVM
; This test makes sure that these instructions are properly eliminated.
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;
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; RUN: llvm-as < %s | opt -instcombine | llvm-dis | not grep icmp
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; END.
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@X = external global i32 ; <i32*> [#uses=2]
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define i1 @test1(i32 %A) {
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%B = icmp eq i32 %A, %A ; <i1> [#uses=1]
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; Never true
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%C = icmp eq i32* @X, null ; <i1> [#uses=1]
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%D = and i1 %B, %C ; <i1> [#uses=1]
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ret i1 %D
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}
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define i1 @test2(i32 %A) {
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%B = icmp ne i32 %A, %A ; <i1> [#uses=1]
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; Never false
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%C = icmp ne i32* @X, null ; <i1> [#uses=1]
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%D = or i1 %B, %C ; <i1> [#uses=1]
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ret i1 %D
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}
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define i1 @test3(i32 %A) {
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%B = icmp slt i32 %A, %A ; <i1> [#uses=1]
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ret i1 %B
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}
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define i1 @test4(i32 %A) {
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%B = icmp sgt i32 %A, %A ; <i1> [#uses=1]
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ret i1 %B
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}
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define i1 @test5(i32 %A) {
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%B = icmp sle i32 %A, %A ; <i1> [#uses=1]
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ret i1 %B
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}
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define i1 @test6(i32 %A) {
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%B = icmp sge i32 %A, %A ; <i1> [#uses=1]
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ret i1 %B
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}
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define i1 @test7(i32 %A) {
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; true
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%B = icmp uge i32 %A, 0 ; <i1> [#uses=1]
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ret i1 %B
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}
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define i1 @test8(i32 %A) {
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; false
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%B = icmp ult i32 %A, 0 ; <i1> [#uses=1]
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ret i1 %B
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}
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;; test operations on boolean values these should all be eliminated$a
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define i1 @test9(i1 %A) {
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; false
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%B = icmp ult i1 %A, false ; <i1> [#uses=1]
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ret i1 %B
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}
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define i1 @test10(i1 %A) {
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; false
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%B = icmp ugt i1 %A, true ; <i1> [#uses=1]
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ret i1 %B
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}
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define i1 @test11(i1 %A) {
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; true
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%B = icmp ule i1 %A, true ; <i1> [#uses=1]
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ret i1 %B
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}
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define i1 @test12(i1 %A) {
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; true
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%B = icmp uge i1 %A, false ; <i1> [#uses=1]
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ret i1 %B
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}
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define i1 @test13(i1 %A, i1 %B) {
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; A | ~B
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%C = icmp uge i1 %A, %B ; <i1> [#uses=1]
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ret i1 %C
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}
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define i1 @test14(i1 %A, i1 %B) {
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; ~(A ^ B)
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%C = icmp eq i1 %A, %B ; <i1> [#uses=1]
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ret i1 %C
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}
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define i1 @test16(i32 %A) {
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%B = and i32 %A, 5 ; <i32> [#uses=1]
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; Is never true
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%C = icmp eq i32 %B, 8 ; <i1> [#uses=1]
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ret i1 %C
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}
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define i1 @test17(i8 %A) {
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%B = or i8 %A, 1 ; <i8> [#uses=1]
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; Always false
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%C = icmp eq i8 %B, 2 ; <i1> [#uses=1]
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ret i1 %C
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}
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define i1 @test18(i1 %C, i32 %a) {
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entry:
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br i1 %C, label %endif, label %else
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else: ; preds = %entry
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br label %endif
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endif: ; preds = %else, %entry
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%b.0 = phi i32 [ 0, %entry ], [ 1, %else ] ; <i32> [#uses=1]
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%tmp.4 = icmp slt i32 %b.0, 123 ; <i1> [#uses=1]
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ret i1 %tmp.4
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}
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define i1 @test19(i1 %A, i1 %B) {
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%a = zext i1 %A to i32 ; <i32> [#uses=1]
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%b = zext i1 %B to i32 ; <i32> [#uses=1]
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%C = icmp eq i32 %a, %b ; <i1> [#uses=1]
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ret i1 %C
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}
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define i32 @test20(i32 %A) {
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%B = and i32 %A, 1 ; <i32> [#uses=1]
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%C = icmp ne i32 %B, 0 ; <i1> [#uses=1]
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%D = zext i1 %C to i32 ; <i32> [#uses=1]
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ret i32 %D
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}
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define i32 @test21(i32 %a) {
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%tmp.6 = and i32 %a, 4 ; <i32> [#uses=1]
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%not.tmp.7 = icmp ne i32 %tmp.6, 0 ; <i1> [#uses=1]
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%retval = zext i1 %not.tmp.7 to i32 ; <i32> [#uses=1]
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ret i32 %retval
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}
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define i1 @test22(i32 %A, i32 %X) {
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%B = and i32 %A, 100663295 ; <i32> [#uses=1]
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%C = icmp ult i32 %B, 268435456 ; <i1> [#uses=1]
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%Y = and i32 %X, 7 ; <i32> [#uses=1]
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%Z = icmp sgt i32 %Y, -1 ; <i1> [#uses=1]
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%R = or i1 %C, %Z ; <i1> [#uses=1]
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ret i1 %R
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}
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define i32 @test23(i32 %a) {
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%tmp.1 = and i32 %a, 1 ; <i32> [#uses=1]
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%tmp.2 = icmp eq i32 %tmp.1, 0 ; <i1> [#uses=1]
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%tmp.3 = zext i1 %tmp.2 to i32 ; <i32> [#uses=1]
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ret i32 %tmp.3
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}
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define i32 @test24(i32 %a) {
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%tmp1 = and i32 %a, 4 ; <i32> [#uses=1]
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%tmp.1 = lshr i32 %tmp1, 2 ; <i32> [#uses=1]
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%tmp.2 = icmp eq i32 %tmp.1, 0 ; <i1> [#uses=1]
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%tmp.3 = zext i1 %tmp.2 to i32 ; <i32> [#uses=1]
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ret i32 %tmp.3
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}
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define i1 @test25(i32 %A) {
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%B = and i32 %A, 2 ; <i32> [#uses=1]
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%C = icmp ugt i32 %B, 2 ; <i1> [#uses=1]
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ret i1 %C
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}
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