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