1; RUN: opt < %s -wasm-lower-em-ehsjlj -enable-emscripten-sjlj -S | FileCheck %s 2 3target datalayout = "e-m:e-p:32:32-i64:64-n32:64-S128" 4target triple = "wasm32-unknown-emscripten" 5 6; Tests if an alias to a function (here malloc) is correctly handled as a 7; function that cannot longjmp. 8 9%struct.__jmp_buf_tag = type { [6 x i32], i32, [32 x i32] } 10@malloc = weak alias ptr (i32), ptr @dlmalloc 11 12; CHECK-LABEL: @malloc_test 13define void @malloc_test() { 14entry: 15 ; CHECK: alloca i32 16 %retval = alloca i32, align 4 17 %jmp = alloca [1 x %struct.__jmp_buf_tag], align 16 18 store i32 0, ptr %retval, align 4 19 %call = call i32 @setjmp(ptr %jmp) #0 20 call void @foo() 21 ret void 22} 23 24; This is a dummy dlmalloc implemenation only to make compiler pass, because an 25; alias (malloc) has to point an actual definition. 26define ptr @dlmalloc(i32) { 27 %p = inttoptr i32 0 to ptr 28 ret ptr %p 29} 30 31declare void @foo() 32; Function Attrs: returns_twice 33declare i32 @setjmp(ptr) #0 34 35attributes #0 = { returns_twice } 36