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1; RUN: llc < %s -fast-isel -asm-verbose=false -wasm-keep-registers | FileCheck %s2 3target triple = "wasm32-unknown-unknown"4 5; Fast-isel uses a 32-bit xor with -1 to negate i1 values, because it doesn't6; make any guarantees about the contents of the high bits of a register holding7; an i1 value. Test that when we do a `br_if` or `br_unless` with what what an8; i1 value in LLVM IR, that we only test the low bit.9 10; CHECK: i32.xor11; CHECK: i32.const $push[[L0:[0-9]+]]=, 1{{$}}12; CHECK: i32.and $push[[L1:[0-9]+]]=, $pop{{[0-9]+}}, $pop[[L0]]{{$}}13; CHECK: br_if 0, $pop[[L1]]{{$}}14 15; CHECK: i32.xor16; CHECK: i32.const $push[[L2:[0-9]+]]=, 1{{$}}17; CHECK: i32.and $push[[L3:[0-9]+]]=, $pop{{[0-9]+}}, $pop[[L2]]{{$}}18; CHECK: br_if 0, $pop[[L3]]{{$}}19 20define void @test() {21start:22 %0 = call i32 @return_one()23 br label %bb124 25bb1:26 %1 = icmp eq i32 %0, 127 %2 = xor i1 %1, true28 br i1 %2, label %bb2, label %bb329 30bb2:31 call void @panic()32 unreachable33 34bb3:35 %3 = xor i1 %2, true36 br i1 %3, label %bb4, label %bb537 38bb4:39 call void @panic()40 unreachable41 42bb5:43 ret void44}45 46declare i32 @return_one()47declare void @panic()48