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; RUN: llc < %s -O0 -wasm-disable-explicit-locals -wasm-keep-registers | FileCheck %s
; Regression test for bug 40172. The problem was that FastISel assumed
; that CmpInst results did not need to be zero extended because
; WebAssembly's compare instructions always return 0 or 1. But in this
; test case FastISel falls back to DAG ISel, which combines away the
; comparison, invalidating FastISel's assumption.
target triple = "wasm32-unknown-unknown"
; CHECK: i32.sub $[[BASE:[0-9]+]]=,
; CHECK: local.copy $[[ARG:[0-9]+]]=, $0{{$}}
; CHECK: i32.const $[[A0:[0-9]+]]=, 1{{$}}
; CHECK: i32.and $[[A1:[0-9]+]]=, $[[ARG]], $[[A0]]{{$}}
; CHECK: i32.store8 8($[[BASE]]), $[[A1]]{{$}}
define void @test(i8 %byte) {
%t = alloca { i8, i8 }, align 1
%x4 = and i8 %byte, 1
%x5 = icmp eq i8 %x4, 1
%x6 = and i8 %byte, 2
%x7 = icmp eq i8 %x6, 2
%x8 = bitcast { i8, i8 }* %t to i8*
%x9 = zext i1 %x5 to i8
store i8 %x9, i8* %x8, align 1
%x10 = getelementptr inbounds { i8, i8 }, { i8, i8 }* %t, i32 0, i32 1
%x11 = zext i1 %x7 to i8
store i8 %x11, i8* %x10, align 1
ret void
}
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