2018-08-11 05:32:47 +08:00
|
|
|
; RUN: llc < %s -fast-isel -asm-verbose=false -wasm-explicit-locals-codegen-test-mode | FileCheck %s
|
2018-07-03 03:45:57 +08:00
|
|
|
|
|
|
|
|
target datalayout = "e-m:e-p:32:32-i64:64-n32:64-S128"
|
|
|
|
|
target triple = "wasm32-unknown-unknown"
|
|
|
|
|
|
|
|
|
|
; Fast-isel uses a 32-bit xor with -1 to negate i1 values, because it doesn't
|
|
|
|
|
; make any guarantees about the contents of the high bits of a register holding
|
|
|
|
|
; an i1 value. Test that when we do a `br_if` or `br_unless` with what what an
|
|
|
|
|
; i1 value in LLVM IR, that we only test the low bit.
|
|
|
|
|
|
|
|
|
|
; CHECK: i32.xor
|
|
|
|
|
; CHECK: i32.const $push[[L0:[0-9]+]]=, 1{{$}}
|
|
|
|
|
; CHECK: i32.and $push[[L1:[0-9]+]]=, $pop{{[0-9]+}}, $pop[[L0]]{{$}}
|
|
|
|
|
; CHECK: br_if 0, $pop[[L1]]{{$}}
|
|
|
|
|
|
|
|
|
|
; CHECK: i32.xor
|
|
|
|
|
; CHECK: i32.const $push[[L2:[0-9]+]]=, 1{{$}}
|
|
|
|
|
; CHECK: i32.and $push[[L3:[0-9]+]]=, $pop{{[0-9]+}}, $pop[[L2]]{{$}}
|
|
|
|
|
; CHECK: br_if 0, $pop[[L3]]{{$}}
|
|
|
|
|
|
|
|
|
|
define void @test() {
|
|
|
|
|
start:
|
|
|
|
|
%0 = call i32 @return_one()
|
|
|
|
|
br label %bb1
|
|
|
|
|
|
|
|
|
|
bb1:
|
|
|
|
|
%1 = icmp eq i32 %0, 1
|
|
|
|
|
%2 = xor i1 %1, true
|
|
|
|
|
br i1 %2, label %bb2, label %bb3
|
|
|
|
|
|
|
|
|
|
bb2:
|
|
|
|
|
call void @panic()
|
|
|
|
|
unreachable
|
|
|
|
|
|
|
|
|
|
bb3:
|
|
|
|
|
%3 = xor i1 %2, true
|
|
|
|
|
br i1 %3, label %bb4, label %bb5
|
|
|
|
|
|
|
|
|
|
bb4:
|
|
|
|
|
call void @panic()
|
|
|
|
|
unreachable
|
|
|
|
|
|
|
|
|
|
bb5:
|
|
|
|
|
ret void
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
declare i32 @return_one()
|
|
|
|
|
declare void @panic()
|
