mirror of
https://github.com/c64scene-ar/llvm-6502.git
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ec9a35a6f9
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47793 91177308-0d34-0410-b5e6-96231b3b80d8
77 lines
1.8 KiB
LLVM
77 lines
1.8 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 rem
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define i32 @test1(i32 %A) {
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%B = srem i32 %A, 1 ; <i32> [#uses=1]
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ret i32 %B
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}
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define i32 @test2(i32 %A) {
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%B = srem i32 0, %A ; <i32> [#uses=1]
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ret i32 %B
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}
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define i32 @test3(i32 %A) {
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%B = urem i32 %A, 8 ; <i32> [#uses=1]
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ret i32 %B
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}
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define i1 @test3a(i32 %A) {
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%B = srem i32 %A, -8 ; <i32> [#uses=1]
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%C = icmp ne i32 %B, 0 ; <i1> [#uses=1]
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ret i1 %C
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}
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define i32 @test4(i32 %X, i1 %C) {
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%V = select i1 %C, i32 1, i32 8 ; <i32> [#uses=1]
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%R = urem i32 %X, %V ; <i32> [#uses=1]
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ret i32 %R
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}
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define i32 @test5(i32 %X, i8 %B) {
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%shift.upgrd.1 = zext i8 %B to i32 ; <i32> [#uses=1]
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%Amt = shl i32 32, %shift.upgrd.1 ; <i32> [#uses=1]
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%V = urem i32 %X, %Amt ; <i32> [#uses=1]
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ret i32 %V
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}
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define i32 @test6(i32 %A) {
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%B = srem i32 %A, 0 ; <i32> [#uses=1]
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ret i32 %B
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}
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define i32 @test7(i32 %A) {
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%B = mul i32 %A, 26 ; <i32> [#uses=1]
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%C = srem i32 %B, 13 ; <i32> [#uses=1]
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ret i32 %C
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}
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define i32 @test8(i32 %A) {
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%B = shl i32 %A, 4 ; <i32> [#uses=1]
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%C = srem i32 %B, 8 ; <i32> [#uses=1]
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ret i32 %C
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}
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define i32 @test9(i32 %A) {
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%B = mul i32 %A, 124 ; <i32> [#uses=1]
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%C = urem i32 %B, 62 ; <i32> [#uses=1]
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ret i32 %C
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}
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define i32 @test10(i8 %c) {
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%tmp.1 = zext i8 %c to i32 ; <i32> [#uses=1]
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%tmp.2 = mul i32 %tmp.1, 3 ; <i32> [#uses=1]
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%tmp.3 = sext i32 %tmp.2 to i64 ; <i64> [#uses=1]
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%tmp.5 = urem i64 %tmp.3, 3 ; <i64> [#uses=1]
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%tmp.6 = trunc i64 %tmp.5 to i32 ; <i32> [#uses=1]
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ret i32 %tmp.6
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}
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define i32 @test11(i32 %i) {
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%tmp.1 = and i32 %i, -2 ; <i32> [#uses=1]
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%tmp.3 = mul i32 %tmp.1, 3 ; <i32> [#uses=1]
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%tmp.5 = srem i32 %tmp.3, 6 ; <i32> [#uses=1]
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ret i32 %tmp.5
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}
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