forked from OSchip/llvm-project
64 lines
2.0 KiB
LLVM
64 lines
2.0 KiB
LLVM
; RUN: llc < %s -asm-verbose=false -verify-machineinstrs -disable-block-placement -wasm-disable-explicit-locals -wasm-keep-registers | 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 an interesting pattern of nested irreducibility.
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; Just check we resolve all the irreducibility here (if not we'd crash).
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; CHECK-LABEL: tre_parse:
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define void @tre_parse() {
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entry:
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br label %for.cond.outer
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for.cond.outer: ; preds = %do.body14, %entry
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br label %for.cond
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for.cond: ; preds = %for.cond.backedge, %for.cond.outer
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%nbranch.0 = phi i32* [ null, %for.cond.outer ], [ %call188, %for.cond.backedge ]
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switch i8 undef, label %if.else [
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i8 40, label %do.body14
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i8 41, label %if.then63
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]
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do.body14: ; preds = %for.cond
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br label %for.cond.outer
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if.then63: ; preds = %for.cond
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unreachable
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if.else: ; preds = %for.cond
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switch i8 undef, label %if.then84 [
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i8 92, label %if.end101
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i8 42, label %if.end101
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]
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if.then84: ; preds = %if.else
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switch i8 undef, label %cleanup.thread [
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i8 43, label %if.end101
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i8 63, label %if.end101
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i8 123, label %if.end101
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]
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if.end101: ; preds = %if.then84, %if.then84, %if.then84, %if.else, %if.else
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unreachable
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cleanup.thread: ; preds = %if.then84
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%call188 = tail call i32* undef(i32* %nbranch.0)
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switch i8 undef, label %for.cond.backedge [
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i8 92, label %land.lhs.true208
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i8 0, label %if.else252
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]
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land.lhs.true208: ; preds = %cleanup.thread
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unreachable
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for.cond.backedge: ; preds = %cleanup.thread
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br label %for.cond
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if.else252: ; preds = %cleanup.thread
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unreachable
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}
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