forked from OSchip/llvm-project
51 lines
1.4 KiB
LLVM
51 lines
1.4 KiB
LLVM
; RUN: opt -S -simplifycfg < %s -mtriple=x86_64-apple-darwin12.0.0 | FileCheck %s
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; rdar://17887153
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target datalayout = "e-p:64:64:64-S128-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:64:64-f16:16:16-f32:32:32-f64:64:64-f128:128:128-v64:64:64-v128:128:128-a0:0:64-s0:64:64-f80:128:128-n8:16:32:64"
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target triple = "x86_64-apple-darwin12.0.0"
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; When we have a covered lookup table, make sure we don't delete PHINodes that
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; are cached in PHIs.
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; CHECK-LABEL: @test
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; CHECK: entry:
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; CHECK-NEXT: sub i3 %arg, -4
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; CHECK-NEXT: zext i3 %switch.tableidx to i4
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; CHECK-NEXT: getelementptr inbounds [8 x i64], [8 x i64]* @switch.table, i32 0, i4 %switch.tableidx.zext
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; CHECK-NEXT: load i64, i64* %switch.gep
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; CHECK-NEXT: add i64
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; CHECK-NEXT: ret i64
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define i64 @test(i3 %arg) {
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entry:
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switch i3 %arg, label %Default [
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i3 -2, label %Label6
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i3 1, label %Label1
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i3 2, label %Label2
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i3 3, label %Label3
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i3 -4, label %Label4
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i3 -3, label %Label5
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]
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Default:
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%v1 = phi i64 [ 7, %Label6 ], [ 11, %Label5 ], [ 6, %Label4 ], [ 13, %Label3 ], [ 9, %Label2 ], [ 15, %Label1 ], [ 8, %entry ]
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%v2 = phi i64 [ 0, %Label6 ], [ 0, %Label5 ], [ 0, %Label4 ], [ 0, %Label3 ], [ 0, %Label2 ], [ 0, %Label1 ], [ 0, %entry ]
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%v3 = add i64 %v1, %v2
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ret i64 %v3
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Label1:
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br label %Default
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Label2:
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br label %Default
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Label3:
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br label %Default
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Label4:
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br label %Default
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Label5:
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br label %Default
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Label6:
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br label %Default
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}
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