forked from OSchip/llvm-project
39 lines
1.5 KiB
LLVM
39 lines
1.5 KiB
LLVM
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; This function contains two selects which differ only by having reversed
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; operand order. They are in fact equivalent, since the icmps that preceede
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; them also are the same except for reversed conditions. SelectionDAG will
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; discover this and return the other SELECT_CCMASK when the operands are
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; canonicalized. This must be handled by SystemZDAGToDAGISel::Select, or
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; instruction selection will fail.
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;
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; RUN: llc < %s -mtriple=s390x-linux-gnu -mcpu=z13
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@g_1531 = external global [7 x i64], align 8
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@g_277 = external global <{ i64, i8, i8, i8, i8, i8, i8 }>, align 8
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@g_62.6 = external global i32, align 4
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define dso_local void @fun() {
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entry:
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%tmp = add nuw nsw i16 0, 238
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%tmp4 = sub nsw i16 %tmp, 0
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store i64 4, i64* getelementptr inbounds (<{ i64, i8, i8, i8, i8, i8, i8 }>, <{ i64, i8, i8, i8, i8, i8, i8 }>* @g_277, i64 0, i32 0), align 8
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%tmp5 = load i64, i64* getelementptr inbounds ([7 x i64], [7 x i64]* @g_1531, i64 0, i64 5), align 8
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%tmp6 = trunc i64 %tmp5 to i32
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%tmp7 = trunc i64 %tmp5 to i16
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%tmp8 = shl i32 %tmp6, 24
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%tmp9 = ashr exact i32 %tmp8, 24
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%tmp10 = urem i16 %tmp7, %tmp4
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%tmp11 = icmp eq i16 %tmp10, 0
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%tmp12 = select i1 %tmp11, i32 0, i32 %tmp9
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%tmp13 = icmp sge i32 %tmp12, undef
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%tmp14 = zext i1 %tmp13 to i32
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%tmp15 = or i32 0, %tmp14
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%tmp16 = icmp ne i16 %tmp10, 0
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%tmp17 = select i1 %tmp16, i32 %tmp9, i32 0
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%tmp18 = icmp sge i32 %tmp17, undef
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%tmp19 = zext i1 %tmp18 to i32
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%tmp20 = or i32 %tmp15, %tmp19
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store i32 %tmp20, i32* @g_62.6, align 4
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unreachable
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}
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