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920c7d7490
This saves a small amount of code size, and is a first small step toward passing values on the stack across block boundaries. Differential Review: http://reviews.llvm.org/D20450 llvm-svn: 270294
175 lines
5.0 KiB
LLVM
175 lines
5.0 KiB
LLVM
; RUN: llc < %s -asm-verbose=false -disable-wasm-fallthrough-return-opt -disable-block-placement -verify-machineinstrs | FileCheck %s
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; Test switch instructions. Block placement is disabled because it reorders
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; the blocks in a way that isn't interesting here.
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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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declare void @foo0()
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declare void @foo1()
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declare void @foo2()
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declare void @foo3()
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declare void @foo4()
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declare void @foo5()
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; CHECK-LABEL: bar32:
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; CHECK: block{{$}}
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; CHECK: block{{$}}
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; CHECK: block{{$}}
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; CHECK: block{{$}}
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; CHECK: block{{$}}
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; CHECK: block{{$}}
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; CHECK: block{{$}}
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; CHECK: br_table {{[^,]+}}, 0, 0, 0, 0, 0, 0, 0, 1, 1, 1, 1, 1, 1, 1, 1, 2, 2, 2, 2, 2, 2, 3, 4, 5, 0{{$}}
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; CHECK: .LBB0_2:
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; CHECK: call foo0@FUNCTION{{$}}
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; CHECK: .LBB0_3:
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; CHECK: call foo1@FUNCTION{{$}}
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; CHECK: .LBB0_4:
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; CHECK: call foo2@FUNCTION{{$}}
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; CHECK: .LBB0_5:
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; CHECK: call foo3@FUNCTION{{$}}
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; CHECK: .LBB0_6:
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; CHECK: call foo4@FUNCTION{{$}}
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; CHECK: .LBB0_7:
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; CHECK: call foo5@FUNCTION{{$}}
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; CHECK: .LBB0_8:
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; CHECK: return{{$}}
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define void @bar32(i32 %n) {
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entry:
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switch i32 %n, label %sw.epilog [
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i32 0, label %sw.bb
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i32 1, label %sw.bb
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i32 2, label %sw.bb
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i32 3, label %sw.bb
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i32 4, label %sw.bb
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i32 5, label %sw.bb
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i32 6, label %sw.bb
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i32 7, label %sw.bb.1
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i32 8, label %sw.bb.1
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i32 9, label %sw.bb.1
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i32 10, label %sw.bb.1
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i32 11, label %sw.bb.1
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i32 12, label %sw.bb.1
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i32 13, label %sw.bb.1
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i32 14, label %sw.bb.1
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i32 15, label %sw.bb.2
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i32 16, label %sw.bb.2
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i32 17, label %sw.bb.2
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i32 18, label %sw.bb.2
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i32 19, label %sw.bb.2
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i32 20, label %sw.bb.2
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i32 21, label %sw.bb.3
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i32 22, label %sw.bb.4
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i32 23, label %sw.bb.5
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]
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sw.bb: ; preds = %entry, %entry, %entry, %entry, %entry, %entry, %entry
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tail call void @foo0()
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br label %sw.epilog
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sw.bb.1: ; preds = %entry, %entry, %entry, %entry, %entry, %entry, %entry, %entry
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tail call void @foo1()
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br label %sw.epilog
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sw.bb.2: ; preds = %entry, %entry, %entry, %entry, %entry, %entry
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tail call void @foo2()
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br label %sw.epilog
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sw.bb.3: ; preds = %entry
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tail call void @foo3()
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br label %sw.epilog
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sw.bb.4: ; preds = %entry
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tail call void @foo4()
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br label %sw.epilog
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sw.bb.5: ; preds = %entry
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tail call void @foo5()
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br label %sw.epilog
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sw.epilog: ; preds = %entry, %sw.bb.5, %sw.bb.4, %sw.bb.3, %sw.bb.2, %sw.bb.1, %sw.bb
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ret void
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}
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; CHECK-LABEL: bar64:
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; CHECK: block{{$}}
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; CHECK: block{{$}}
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; CHECK: block{{$}}
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; CHECK: block{{$}}
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; CHECK: block{{$}}
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; CHECK: block{{$}}
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; CHECK: block{{$}}
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; CHECK: br_table {{[^,]+}}, 0, 0, 0, 0, 0, 0, 0, 1, 1, 1, 1, 1, 1, 1, 1, 2, 2, 2, 2, 2, 2, 3, 4, 5, 0{{$}}
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; CHECK: .LBB1_2:
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; CHECK: call foo0@FUNCTION{{$}}
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; CHECK: .LBB1_3:
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; CHECK: call foo1@FUNCTION{{$}}
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; CHECK: .LBB1_4:
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; CHECK: call foo2@FUNCTION{{$}}
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; CHECK: .LBB1_5:
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; CHECK: call foo3@FUNCTION{{$}}
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; CHECK: .LBB1_6:
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; CHECK: call foo4@FUNCTION{{$}}
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; CHECK: .LBB1_7:
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; CHECK: call foo5@FUNCTION{{$}}
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; CHECK: .LBB1_8:
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; CHECK: return{{$}}
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define void @bar64(i64 %n) {
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entry:
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switch i64 %n, label %sw.epilog [
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i64 0, label %sw.bb
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i64 1, label %sw.bb
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i64 2, label %sw.bb
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i64 3, label %sw.bb
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i64 4, label %sw.bb
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i64 5, label %sw.bb
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i64 6, label %sw.bb
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i64 7, label %sw.bb.1
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i64 8, label %sw.bb.1
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i64 9, label %sw.bb.1
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i64 10, label %sw.bb.1
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i64 11, label %sw.bb.1
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i64 12, label %sw.bb.1
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i64 13, label %sw.bb.1
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i64 14, label %sw.bb.1
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i64 15, label %sw.bb.2
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i64 16, label %sw.bb.2
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i64 17, label %sw.bb.2
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i64 18, label %sw.bb.2
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i64 19, label %sw.bb.2
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i64 20, label %sw.bb.2
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i64 21, label %sw.bb.3
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i64 22, label %sw.bb.4
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i64 23, label %sw.bb.5
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]
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sw.bb: ; preds = %entry, %entry, %entry, %entry, %entry, %entry, %entry
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tail call void @foo0()
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br label %sw.epilog
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sw.bb.1: ; preds = %entry, %entry, %entry, %entry, %entry, %entry, %entry, %entry
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tail call void @foo1()
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br label %sw.epilog
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sw.bb.2: ; preds = %entry, %entry, %entry, %entry, %entry, %entry
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tail call void @foo2()
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br label %sw.epilog
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sw.bb.3: ; preds = %entry
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tail call void @foo3()
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br label %sw.epilog
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sw.bb.4: ; preds = %entry
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tail call void @foo4()
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br label %sw.epilog
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sw.bb.5: ; preds = %entry
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tail call void @foo5()
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br label %sw.epilog
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sw.epilog: ; preds = %entry, %sw.bb.5, %sw.bb.4, %sw.bb.3, %sw.bb.2, %sw.bb.1, %sw.bb
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ret void
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}
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