mirror of
https://github.com/c64scene-ar/llvm-6502.git
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62 lines
1.9 KiB
LLVM
62 lines
1.9 KiB
LLVM
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; RUN: opt -inline -instcombine -S < %s
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; PR12967
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target datalayout = "e-p:64:64:64-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:64:64-f32:32:32-f64:64:64-v64:64:64-v128:128:128-a0:0:64-s0:64:64-f80:128:128-n8:16:32:64-S128"
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target triple = "x86_64-apple-macosx10.7.0"
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@d = common global i32 0, align 4
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@c = common global i32 0, align 4
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@e = common global i32 0, align 4
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@f = common global i32 0, align 4
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@a = common global i32 0, align 4
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@b = common global i32 0, align 4
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define signext i8 @fn1(i32 %p1) nounwind uwtable readnone ssp {
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entry:
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%shr = lshr i32 1, %p1
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%conv = trunc i32 %shr to i8
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ret i8 %conv
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}
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define void @fn4() nounwind uwtable ssp {
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entry:
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%0 = load i32* @d, align 4, !tbaa !0
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%cmp = icmp eq i32 %0, 0
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%conv = zext i1 %cmp to i32
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store i32 %conv, i32* @c, align 4, !tbaa !0
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tail call void @fn3(i32 %conv) nounwind
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ret void
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}
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define void @fn3(i32 %p1) nounwind uwtable ssp {
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entry:
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%and = and i32 %p1, 8
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store i32 %and, i32* @e, align 4, !tbaa !0
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%sub = add nsw i32 %and, -1
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store i32 %sub, i32* @f, align 4, !tbaa !0
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%0 = load i32* @a, align 4, !tbaa !0
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%tobool = icmp eq i32 %0, 0
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br i1 %tobool, label %if.else, label %if.then
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if.then: ; preds = %entry
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%1 = load i32* @b, align 4, !tbaa !0
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%.lobit = lshr i32 %1, 31
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%2 = trunc i32 %.lobit to i8
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%.not = xor i8 %2, 1
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br label %if.end
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if.else: ; preds = %entry
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%call = tail call signext i8 @fn1(i32 %sub) nounwind
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br label %if.end
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if.end: ; preds = %if.else, %if.then
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%storemerge.in = phi i8 [ %call, %if.else ], [ %.not, %if.then ]
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%storemerge = sext i8 %storemerge.in to i32
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store i32 %storemerge, i32* @b, align 4
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ret void
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}
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!0 = metadata !{metadata !"int", metadata !1}
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!1 = metadata !{metadata !"omnipotent char", metadata !2}
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!2 = metadata !{metadata !"Simple C/C++ TBAA"}
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