88 lines
1.6 KiB
LLVM
88 lines
1.6 KiB
LLVM
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; RUN: llc < %s -asm-verbose=false -verify-machineinstrs | FileCheck %s
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target datalayout = "e-m:e-p:32:32-i64:64-n32:64-S128"
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target triple = "wasm32-unknown-unknown"
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; Test that switches are lowered correctly in the presence of an
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; unreachable default branch target.
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; CHECK-LABEL: foo:
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; CHECK-NEXT: .functype foo (i32) -> (i32)
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; CHECK-NEXT: block
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; CHECK-NEXT: block
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; CHECK-NEXT: local.get 0
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; CHECK-NEXT: br_table {0, 1, 0}
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; CHECK-NEXT: .LBB0_1:
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; CHECK-NEXT: end_block
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; CHECK-NEXT: i32.const 0
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; CHECK-NEXT: return
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; CHECK-NEXT: .LBB0_2:
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; CHECK-NEXT: end_block
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; CHECK-NEXT: i32.const 1
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; CHECK-NEXT: end_function
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define i32 @foo(i32 %x) {
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entry:
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switch i32 %x, label %unreachable [
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i32 0, label %bb0
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i32 1, label %bb1
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]
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bb0:
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ret i32 0
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bb1:
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ret i32 1
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unreachable:
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unreachable
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}
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; CHECK-LABEL: split:
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; CHECK: .functype split (i32) -> ()
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; CHECK: block
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; CHECK: br_if 0
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; CHECK: block
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; CHECK: block
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; CHECK: br_table {1, 1, 0}
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; CHECK: .LBB1_2
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; CHECK: end_block
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; CHECK: br_table {0, 0, 0, 0, 0, 0, 0, 0}
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; CHECK: .LBB1_3
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; CHECK: end_block
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; CHECK: unreachable
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; CHECK: .LBB1_4
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; CHECK: end_block
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; CHECK: end_function
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define void @split(i8 %c) {
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entry:
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switch i8 %c, label %sw.default [
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i8 114, label %return
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i8 103, label %sw.bb1
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i8 98, label %sw.bb2
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i8 97, label %sw.bb3
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i8 48, label %sw.bb4
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i8 49, label %sw.bb5
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]
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sw.bb1:
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unreachable
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sw.bb2:
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unreachable
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sw.bb3:
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unreachable
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sw.bb4:
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unreachable
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sw.bb5:
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unreachable
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sw.default:
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unreachable
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return:
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ret void
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}
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