gecko-dev/mozglue
Markus Stange 4c59aa793c Bug 1499507 - Don't collect line numbers for profiling stack frames. r=njn
They were not displayed in the UI, and the instructions to initialize the line
field of a stack frame increased code size unnecessarily.

This change reduces the binary size on Linux x64 by around 100KB.

Here's a diff of the impact on the code generated for Attr_Binding::get_specified
in the Mac build:

@@ -20,17 +20,16 @@
    movq       0x8(%rbx), %rax
    movq       %r12, %rcx
    shlq       $0x5, %rcx
    leaq       aGetAttrspecifi, %rdx                       ; "get Attr.specified"
    movq       %rdx, (%rax,%rcx)
    movq       $0x0, 0x8(%rax,%rcx)
    leaq       -40(%rbp), %rdx
    movq       %rdx, 0x10(%rax,%rcx)
-   movl       $0x106, 0x18(%rax,%rcx)
    movl       $0x1c, 0x1c(%rax,%rcx)
    leal       0x1(%r12), %eax
    movl       %eax, 0x10(%rbx)

    movq       %r15, %rdi
    call       __ZNK7mozilla3dom4Attr9SpecifiedEv          ; mozilla::dom::Attr::Specified() const
    movzxl     %al, %eax
    movabsq    $0xfff9000000000000, %rcx

Depends on D9193

Differential Revision: https://phabricator.services.mozilla.com/D9195

--HG--
extra : moz-landing-system : lando
2018-11-05 20:55:10 +00:00
..
android Bug 1471025: Part 3c - Also pass the shared preference map handle to Android content processes. r=jld 2018-07-13 11:06:58 -07:00
build Bug 1499507 - Don't collect line numbers for profiling stack frames. r=njn 2018-11-05 20:55:10 +00:00
linker Bug 1480834 - 3. Fix linker compile errors under x86-64; r=glandium 2018-09-13 12:09:25 -04:00
misc Bug 1499507 - Don't collect line numbers for profiling stack frames. r=njn 2018-11-05 20:55:10 +00:00
tests Bug 1490624: Correcting incorrect captitalization of windows.h r=bustage-fix 2018-09-12 12:14:10 +02:00
moz.build Bug 1407468 - Replace multiple !JS_STANDALONE with MOZ_WIDGET_TOOLKIT. r=mshal 2017-10-05 14:50:01 +09:00