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llvm-mirror/test/CodeGen/WebAssembly/main-three-args.ll
Dan Gohman 9634c88c3c [WebAssembly] Re-enable main-function signature rewriting
Re-enable the code to rewrite main-function signatures into
"int main(int argc, char *argv[])", but limited to only handling
the case of "int main(void)", so that it doesn't silently strip
an argument in the "int main(int argc, char *argv[], char *envp[])"
case.

This allows main to be called by C startup code, since WebAssembly
requires caller and callee signatures to match, so it can't rely
on passing main a different number of arguments than it expects.

Differential Revision: https://reviews.llvm.org/D57323

llvm-svn: 352479
2019-01-29 10:53:42 +00:00

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LLVM

; RUN: llc < %s -asm-verbose=false | FileCheck %s
; Test that main function with a non-standard third argument is
; not wrapped.
target datalayout = "e-m:e-p:32:32-i64:64-n32:64-S128"
target triple = "wasm32-unknown-unknown"
define i32 @main(i32 %a, i8** %b, i8** %c) {
ret i32 0
}
; CHECK-LABEL: main:
; CHECK-NEXT: .functype main (i32, i32, i32) -> (i32)
; CHECK-NOT: __original_main: