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[WebAssembly] Add test of indirect call to an otherwise unused type 

In this case we are calling a function pointer which
a type that doesn't otherwise exist in the code.
Clearly this code can't would trap if it was ever
called (because there is not such function that
the pointer can resolve to).

But it should valid and compile and link and validation
time.

llvm-svn: 321134
This commit is contained in:
Sam Clegg 2017-12-20 01:17:45 +00:00
parent fee10106d9
commit 7075d3fc1c
1 changed files with 22 additions and 2 deletions
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24
lld/test/wasm/call-indirect.ll
View File

@ -20,10 +20,17 @@ entry:
define i32 @_start() local_unnamed_addr #1 {
entry:
%0 = load i32 ()*, i32 ()** @indirect_func, align 4
%call = tail call i32 %0() #2
%call = call i32 %0() #2
ret i32 0
}
; Indirect function call where no function actually has this type.
; Ensures that the type entry is still created in this case.
define void @call_ptr(i64 (i64)* %arg) {
%1 = call i64 %arg(i64 1)
ret void
}
; CHECK: !WASM
; CHECK-NEXT: FileHeader:
; CHECK-NEXT: Version: 0x00000001
@ -36,8 +43,16 @@ entry:
; CHECK-NEXT: - Index: 1
; CHECK-NEXT: ReturnType: NORESULT
; CHECK-NEXT: ParamTypes:
; CHECK-NEXT: - Index: 2
; CHECK-NEXT: ReturnType: NORESULT
; CHECK-NEXT: ParamTypes:
; CHECK-NEXT: - I32
; CHECK-NEXT: - Index: 3
; CHECK-NEXT: ReturnType: I64
; CHECK-NEXT: ParamTypes:
; CHECK-NEXT: - I64
; CHECK-NEXT: - Type: FUNCTION
; CHECK-NEXT: FunctionTypes: [ 0, 1, 0, 0 ]
; CHECK-NEXT: FunctionTypes: [ 0, 1, 0, 0, 2 ]
; CHECK-NEXT: - Type: TABLE
; CHECK-NEXT: Tables:
; CHECK-NEXT: - ElemType: ANYFUNC
@ -72,6 +87,9 @@ entry:
; CHECK-NEXT: - Name: call_bar_indirect
; CHECK-NEXT: Kind: FUNCTION
; CHECK-NEXT: Index: 1
; CHECK-NEXT: - Name: call_ptr
; CHECK-NEXT: Kind: FUNCTION
; CHECK-NEXT: Index: 4
; CHECK-NEXT: - Type: ELEM
; CHECK-NEXT: Segments:
; CHECK-NEXT: - Offset:
@ -88,6 +106,8 @@ entry:
; CHECK-NEXT: Body: 41020B
; CHECK-NEXT: - Locals:
; CHECK-NEXT: Body: 410028028888808000118080808000001A41000B
; CHECK-NEXT: - Locals:
; CHECK-NEXT: Body: 42012000118380808000001A0B
; CHECK-NEXT: - Type: DATA
; CHECK-NEXT: Segments:
; CHECK-NEXT: - SectionOffset: 7