llvm-project.git/llvm/test/CodeGen/WebAssembly/stack-protector.ll, branch users/nico/python-2

[NFC][WebAssembly] Updated tests

2023-01-26T10:26:24+00:00

Run update_llc_test_checks on a number of codegen tests.

[WebAssembly] Convert some tests to opaque pointers (NFC)

2022-12-19T12:07:59+00:00

[WebAssembly] Always emit functype directives for defined functions

2022-03-22T09:24:58+00:00

This fixes bug . For
now this means that defined functions will have two .functype directives
emitted. Given discussion in that bug has suggested interest in moving
towards using something other than .functype to mark the beginning of a
function (which would, as a side-effect, solve this issue), this patch
doesn't attempt to avoid that duplication.

Some test cases that used CHECK-LABEL: foo rather than CHECK-LABEL: foo:
are broken by this change. This patch updates those test cases to always
have a colon at the end of the CHECK-LABEL string.

Differential Revision: https://reviews.llvm.org/D122134

[WebAssembly] Generate unreachable after __stack_chk_fail

2020-07-08T08:02:05+00:00

`__stack_chk_fail` does not return, but `unreachable` was not generated
following `call __stack_chk_fail`. This had a possibility to generate an
invalid binary for functions with a return type, because
`__stack_chk_fail`'s return type is void and `call __stack_chk_fail` can
be the last instruction in the function whose return type is non-void.
Generating `unreachable` after it makes sure CFGStackify's
`fixEndsAtEndOfFunction` handles it correctly.

Reviewed By: tlively

Differential Revision: https://reviews.llvm.org/D83277

Use SETNE directly rather than SUB/SETNE 0 for stack guard check

2020-02-18T13:21:26+00:00

Summary:
Backends should fold the subtraction into the comparison, but not all
seem to. Moreover, on targets where pointers are not integers, such as
CHERI, an integer subtraction is not appropriate. Instead we should just
compare the two pointers directly, as this should work everywhere and
potentially generate more efficient code.

Reviewers: bogner, lebedev.ri, efriedma, t.p.northover, uweigand, sunfish

Reviewed By: lebedev.ri

Subscribers: dschuff, sbc100, arichardson, jgravelle-google, hiraditya, aheejin, llvm-commits

Tags: #llvm

Differential Revision: https://reviews.llvm.org/D74454

[WebAssembly] Define the signature for __stack_chk_fail

2019-04-29T21:09:44+00:00

The WebAssembly backend needs to know the signatures of all runtime
libcall functions. This adds the signature for __stack_chk_fail which was
previously missing.

Also, make the error message for a missing libcall include the name of
the function.

Differential Revision: https://reviews.llvm.org/D59521

Reviewed By: sbc100

llvm-svn: 359505