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1; RUN: llc < %s -O0 -wasm-disable-explicit-locals -wasm-keep-registers | FileCheck %s2 3; Regression test for bug 40172. The problem was that FastISel assumed4; that CmpInst results did not need to be zero extended because5; WebAssembly's compare instructions always return 0 or 1. But in this6; test case FastISel falls back to DAG ISel, which combines away the7; comparison, invalidating FastISel's assumption.8 9target triple = "wasm32-unknown-unknown"10 11; CHECK: i32.sub $[[BASE:[0-9]+]]=,12; CHECK: local.copy $[[ARG:[0-9]+]]=, $0{{$}}13; CHECK: i32.const $push[[A0:[0-9]+]]=, 1{{$}}14; CHECK: i32.and $push[[A1:[0-9]+]]=, $[[ARG]], $pop[[A0]]{{$}}15; CHECK: i32.store8 8($[[BASE]]), $pop[[A1]]{{$}}16 17define void @test(i8 %byte) {18 %t = alloca { i8, i8 }, align 819 %x4 = and i8 %byte, 120 %x5 = icmp eq i8 %x4, 121 %x6 = and i8 %byte, 222 %x7 = icmp eq i8 %x6, 223 %x9 = zext i1 %x5 to i824 store i8 %x9, ptr %t, align 125 %x10 = getelementptr inbounds { i8, i8 }, ptr %t, i32 0, i32 126 %x11 = zext i1 %x7 to i827 store i8 %x11, ptr %x10, align 128 ret void29}30