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llvm-project/lld/test/wasm/undefined.ll

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[WebAssembly] Use inline target tripple in test cases This is somewhat preferable since (in many cases) it allows llc to be run directly on the .ll files without having to pass the `-mtriple` argument. Differential Revision: https://reviews.llvm.org/D42438 llvm-svn: 323299
2018-01-24 11:29:47 +08:00
; RUN: llc -filetype=obj %s -o %t.o
[WebAssembly] Check function signatures by default But only produce a warning (for now) unless --fatal-warnings is passed. Differential Revision: https://reviews.llvm.org/D46484 llvm-svn: 331574
2018-05-05 09:23:07 +08:00
; RUN: wasm-ld --allow-undefined -o %t.wasm %t.o
[WebAssembly] Initial wasm linker implementation This linker backend is still a work in progress but is enough to link simple programs including linking against library archives. Differential Revision: https://reviews.llvm.org/D34851 llvm-svn: 318539
2017-11-18 02:14:09 +08:00
[lld][WebAssembly] Report undefined symbols during scanRelocations This puts handling of undefined symbols in a single location. Its also more in line with the ELF backend which only reports undefined symbols based on relocations. One side effect is that we no longer report undefined symbols that are only referenced in GC'd sections. This also fixes a crash reported in the emscripten toolchain: https://github.com/emscripten-core/emscripten/issues/8930. Differential Revision: https://reviews.llvm.org/D64280 llvm-svn: 365553
2019-07-10 04:45:20 +08:00
; Fails due to undefined 'foo'
[WebAssembly] Check function signatures by default But only produce a warning (for now) unless --fatal-warnings is passed. Differential Revision: https://reviews.llvm.org/D46484 llvm-svn: 331574
2018-05-05 09:23:07 +08:00
; RUN: not wasm-ld --undefined=baz -o %t.wasm %t.o 2>&1 | FileCheck %s
[WebAssembly] Initial wasm linker implementation This linker backend is still a work in progress but is enough to link simple programs including linking against library archives. Differential Revision: https://reviews.llvm.org/D34851 llvm-svn: 318539
2017-11-18 02:14:09 +08:00
; CHECK: error: {{.*}}.o: undefined symbol: foo
[WebAssembly] Don't error when --undefined symbols are not found This matches the behavior of the ELF linker where -u/--undefined means symbols will get pulled in from archives but won't result in link error if they are missing. Also, don't actually great symbol table entries for the undefined symbols, again matching more closely the ELF linker. This also results in simplification of the code. Differential Revision: https://reviews.llvm.org/D50279 llvm-svn: 338938
2018-08-04 08:04:06 +08:00
; CHECK-NOT: undefined symbol: baz
[WebAssembly] Initial wasm linker implementation This linker backend is still a work in progress but is enough to link simple programs including linking against library archives. Differential Revision: https://reviews.llvm.org/D34851 llvm-svn: 318539
2017-11-18 02:14:09 +08:00
[WebAssembly] Honor --allow-undefined even for explicit exports When a symbol is exported via --export=foo but --allow-undefined is also specified, the symbol is now allowed to be undefined. Previously we were special casing such symbols. This combinations of behavior is exactly what emescripten requires. Although we are trying hard not to allow emscripten specific features in lld, this one makes sense. Enforce this behavior by added this case to test/wasm/undefined.ll. Differential Revision: https://reviews.llvm.org/D44237 llvm-svn: 326976
2018-03-08 09:16:05 +08:00
; Succeeds if we pass a file containing 'foo' as --allow-undefined-file.
[WebAssembly] Initial wasm linker implementation This linker backend is still a work in progress but is enough to link simple programs including linking against library archives. Differential Revision: https://reviews.llvm.org/D34851 llvm-svn: 318539
2017-11-18 02:14:09 +08:00
; RUN: echo 'foo' > %t.txt
[WebAssembly] Check function signatures by default But only produce a warning (for now) unless --fatal-warnings is passed. Differential Revision: https://reviews.llvm.org/D46484 llvm-svn: 331574
2018-05-05 09:23:07 +08:00
; RUN: wasm-ld --allow-undefined-file=%t.txt -o %t.wasm %t.o
[WebAssembly] Initial wasm linker implementation This linker backend is still a work in progress but is enough to link simple programs including linking against library archives. Differential Revision: https://reviews.llvm.org/D34851 llvm-svn: 318539
2017-11-18 02:14:09 +08:00
[WebAssembly] Honor --allow-undefined even for explicit exports When a symbol is exported via --export=foo but --allow-undefined is also specified, the symbol is now allowed to be undefined. Previously we were special casing such symbols. This combinations of behavior is exactly what emescripten requires. Although we are trying hard not to allow emscripten specific features in lld, this one makes sense. Enforce this behavior by added this case to test/wasm/undefined.ll. Differential Revision: https://reviews.llvm.org/D44237 llvm-svn: 326976
2018-03-08 09:16:05 +08:00
; Succeeds even if a missing symbol is added via --export
[WebAssembly] Check function signatures by default But only produce a warning (for now) unless --fatal-warnings is passed. Differential Revision: https://reviews.llvm.org/D46484 llvm-svn: 331574
2018-05-05 09:23:07 +08:00
; RUN: wasm-ld --allow-undefined --export=xxx -o %t.wasm %t.o
[WebAssembly] Honor --allow-undefined even for explicit exports When a symbol is exported via --export=foo but --allow-undefined is also specified, the symbol is now allowed to be undefined. Previously we were special casing such symbols. This combinations of behavior is exactly what emescripten requires. Although we are trying hard not to allow emscripten specific features in lld, this one makes sense. Enforce this behavior by added this case to test/wasm/undefined.ll. Differential Revision: https://reviews.llvm.org/D44237 llvm-svn: 326976
2018-03-08 09:16:05 +08:00
[WebAssembly] Remove final -wasm component of target triple. NFC. This has been the default for a while now. llvm-svn: 332009
2018-05-11 01:59:41 +08:00
target triple = "wasm32-unknown-unknown"
[WebAssembly] Use inline target tripple in test cases This is somewhat preferable since (in many cases) it allows llc to be run directly on the .ll files without having to pass the `-mtriple` argument. Differential Revision: https://reviews.llvm.org/D42438 llvm-svn: 323299
2018-01-24 11:29:47 +08:00
[WebAssembly] Initial wasm linker implementation This linker backend is still a work in progress but is enough to link simple programs including linking against library archives. Differential Revision: https://reviews.llvm.org/D34851 llvm-svn: 318539
2017-11-18 02:14:09 +08:00
; Takes the address of the external foo() resulting in undefined external
[lld][WebAssembly] Report undefined symbols during scanRelocations This puts handling of undefined symbols in a single location. Its also more in line with the ELF backend which only reports undefined symbols based on relocations. One side effect is that we no longer report undefined symbols that are only referenced in GC'd sections. This also fixes a crash reported in the emscripten toolchain: https://github.com/emscripten-core/emscripten/issues/8930. Differential Revision: https://reviews.llvm.org/D64280 llvm-svn: 365553
2019-07-10 04:45:20 +08:00
@bar = global i8* bitcast (i32 ()* @foo to i8*), align 4
@llvm.used = appending global [1 x i8**] [i8** @bar], section "llvm.metadata"
[WebAssembly] Initial wasm linker implementation This linker backend is still a work in progress but is enough to link simple programs including linking against library archives. Differential Revision: https://reviews.llvm.org/D34851 llvm-svn: 318539
2017-11-18 02:14:09 +08:00
declare i32 @foo() #0
define hidden void @_start() local_unnamed_addr #0 {
entry:
ret void
}