forked from OSchip/llvm-project
28 lines
1.1 KiB
LLVM
28 lines
1.1 KiB
LLVM
; RUN: llc < %s -asm-verbose=false -enable-emscripten-sjlj -wasm-keep-registers | FileCheck %s
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target datalayout = "e-m:e-p:32:32-i64:64-n32:64-S128"
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target triple = "wasm32-unknown-unknown"
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%struct.__jmp_buf_tag = type { [6 x i32], i32, [32 x i32] }
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declare i32 @setjmp(%struct.__jmp_buf_tag*) #0
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declare {i32, i32} @returns_struct()
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; Test the combination of backend legalization of large return types and the
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; Emscripten sjlj transformation
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define {i32, i32} @legalized_to_sret() {
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entry:
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%env = alloca [1 x %struct.__jmp_buf_tag], align 16
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%arraydecay = getelementptr inbounds [1 x %struct.__jmp_buf_tag], [1 x %struct.__jmp_buf_tag]* %env, i32 0, i32 0
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%call = call i32 @setjmp(%struct.__jmp_buf_tag* %arraydecay) #0
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; This is the function pointer to pass to invoke.
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; It needs to be the first argument (that's what we're testing here)
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; CHECK: i32.const $push[[FPTR:[0-9]+]]=, returns_struct
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; This is the sret stack region (as an offset from the stack pointer local)
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; CHECK: call "__invoke_{i32.i32}", $pop[[FPTR]]
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%ret = call {i32, i32} @returns_struct()
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ret {i32, i32} %ret
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}
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attributes #0 = { returns_twice }
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