mirror of
https://github.com/c64scene-ar/llvm-6502.git
synced 2024-12-22 07:32:48 +00:00
86 lines
3.1 KiB
LLVM
86 lines
3.1 KiB
LLVM
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; RUN: llvm-as < %s | llc -mtriple=i386-apple-darwin9 -stats |& grep regcoalescing | grep commuting
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@lookupTable5B = external global [64 x i32], align 32 ; <[64 x i32]*> [#uses=1]
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@lookupTable3B = external global [16 x i32], align 32 ; <[16 x i32]*> [#uses=1]
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@disparity0 = external global i32 ; <i32*> [#uses=5]
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@disparity1 = external global i32 ; <i32*> [#uses=3]
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define i32 @calc(i32 %theWord, i32 %k) nounwind {
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entry:
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%0 = lshr i32 %theWord, 3 ; <i32> [#uses=1]
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%1 = and i32 %0, 31 ; <i32> [#uses=1]
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%2 = shl i32 %k, 5 ; <i32> [#uses=1]
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%3 = or i32 %1, %2 ; <i32> [#uses=1]
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%4 = and i32 %theWord, 7 ; <i32> [#uses=1]
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%5 = shl i32 %k, 3 ; <i32> [#uses=1]
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%6 = or i32 %5, %4 ; <i32> [#uses=1]
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%7 = getelementptr [64 x i32]* @lookupTable5B, i32 0, i32 %3 ; <i32*> [#uses=1]
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%8 = load i32* %7, align 4 ; <i32> [#uses=5]
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%9 = getelementptr [16 x i32]* @lookupTable3B, i32 0, i32 %6 ; <i32*> [#uses=1]
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%10 = load i32* %9, align 4 ; <i32> [#uses=5]
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%11 = and i32 %8, 65536 ; <i32> [#uses=1]
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%12 = icmp eq i32 %11, 0 ; <i1> [#uses=1]
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br i1 %12, label %bb1, label %bb
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bb: ; preds = %entry
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%13 = and i32 %8, 994 ; <i32> [#uses=1]
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%14 = load i32* @disparity0, align 4 ; <i32> [#uses=2]
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store i32 %14, i32* @disparity1, align 4
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br label %bb8
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bb1: ; preds = %entry
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%15 = lshr i32 %8, 18 ; <i32> [#uses=1]
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%16 = and i32 %15, 1 ; <i32> [#uses=1]
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%17 = load i32* @disparity0, align 4 ; <i32> [#uses=4]
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%18 = icmp eq i32 %16, %17 ; <i1> [#uses=1]
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%not = select i1 %18, i32 0, i32 994 ; <i32> [#uses=1]
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%.masked = and i32 %8, 994 ; <i32> [#uses=1]
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%result.1 = xor i32 %not, %.masked ; <i32> [#uses=2]
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%19 = and i32 %8, 524288 ; <i32> [#uses=1]
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%20 = icmp eq i32 %19, 0 ; <i1> [#uses=1]
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br i1 %20, label %bb7, label %bb6
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bb6: ; preds = %bb1
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%21 = xor i32 %17, 1 ; <i32> [#uses=2]
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store i32 %21, i32* @disparity1, align 4
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br label %bb8
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bb7: ; preds = %bb1
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store i32 %17, i32* @disparity1, align 4
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br label %bb8
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bb8: ; preds = %bb7, %bb6, %bb
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%22 = phi i32 [ %17, %bb7 ], [ %21, %bb6 ], [ %14, %bb ] ; <i32> [#uses=4]
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%result.0 = phi i32 [ %result.1, %bb7 ], [ %result.1, %bb6 ], [ %13, %bb ] ; <i32> [#uses=2]
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%23 = and i32 %10, 65536 ; <i32> [#uses=1]
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%24 = icmp eq i32 %23, 0 ; <i1> [#uses=1]
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br i1 %24, label %bb10, label %bb9
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bb9: ; preds = %bb8
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%25 = and i32 %10, 29 ; <i32> [#uses=1]
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%26 = or i32 %result.0, %25 ; <i32> [#uses=1]
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store i32 %22, i32* @disparity0, align 4
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ret i32 %26
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bb10: ; preds = %bb8
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%27 = lshr i32 %10, 18 ; <i32> [#uses=1]
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%28 = and i32 %27, 1 ; <i32> [#uses=1]
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%29 = icmp eq i32 %28, %22 ; <i1> [#uses=1]
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%not13 = select i1 %29, i32 0, i32 29 ; <i32> [#uses=1]
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%.masked20 = and i32 %10, 29 ; <i32> [#uses=1]
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%.pn = xor i32 %not13, %.masked20 ; <i32> [#uses=1]
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%result.3 = or i32 %.pn, %result.0 ; <i32> [#uses=2]
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%30 = and i32 %10, 524288 ; <i32> [#uses=1]
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%31 = icmp eq i32 %30, 0 ; <i1> [#uses=1]
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br i1 %31, label %bb17, label %bb16
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bb16: ; preds = %bb10
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%32 = xor i32 %22, 1 ; <i32> [#uses=1]
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store i32 %32, i32* @disparity0, align 4
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ret i32 %result.3
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bb17: ; preds = %bb10
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store i32 %22, i32* @disparity0, align 4
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ret i32 %result.3
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}
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