1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
|
; RUN: llc < %s -asm-verbose=false -enable-emscripten-sjlj -wasm-keep-registers | FileCheck %s
target triple = "wasm32-unknown-unknown"
%struct.__jmp_buf_tag = type { [6 x i32], i32, [32 x i32] }
declare i32 @setjmp(ptr) #0
declare {i32, i32} @returns_struct()
; Test the combination of backend legalization of large return types and the
; Emscripten sjlj transformation
define {i32, i32} @legalized_to_sret() {
entry:
%env = alloca [1 x %struct.__jmp_buf_tag], align 16
%call = call i32 @setjmp(ptr %env) #0
; This is the function pointer to pass to invoke.
; It needs to be the first argument (that's what we're testing here)
; CHECK: i32.const $push[[FPTR:[0-9]+]]=, returns_struct
; This is the sret stack region (as an offset from the stack pointer local)
; CHECK: call invoke_vi, $pop[[FPTR]]
%ret = call {i32, i32} @returns_struct()
ret {i32, i32} %ret
}
attributes #0 = { returns_twice }
|
