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| author | Derek Schuff <dschuff@google.com> | 2013-02-05 17:55:27 +0000 |
|---|---|---|
| committer | Derek Schuff <dschuff@google.com> | 2013-02-05 17:55:27 +0000 |
| commit | f918d7fd7393049bc87bc03fda2d2cd3cec1dacb (patch) | |
| tree | 1a4d4eb30a7e87383e67c3e47147fec66c04044c /test/MC/X86 | |
| parent | a499d2bcef0c1001c60d752d356e50eed2402ca8 (diff) | |
| download | llvm-f918d7fd7393049bc87bc03fda2d2cd3cec1dacb.tar.gz llvm-f918d7fd7393049bc87bc03fda2d2cd3cec1dacb.tar.bz2 llvm-f918d7fd7393049bc87bc03fda2d2cd3cec1dacb.tar.xz | |
[MC] Bundle alignment: Invalidate relaxed fragments
Currently, when a fragment is relaxed, its size is modified, but its
offset is not (it gets laid out as a side effect of checking whether
it needs relaxation), then all subsequent fragments are invalidated
because their offsets need to change. When bundling is enabled,
relaxed fragments need to get laid out again, because the increase in
size may push it over a bundle boundary. So instead of only
invalidating subsequent fragments, also invalidate the fragment that
gets relaxed, which causes it to get laid out again.
This patch also fixes some trailing whitespace and fixes the
bundling-related debug output of MCFragments.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@174401 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'test/MC/X86')
| -rw-r--r-- | test/MC/X86/AlignedBundling/relax-at-bundle-end.s | 16 |
1 files changed, 16 insertions, 0 deletions
diff --git a/test/MC/X86/AlignedBundling/relax-at-bundle-end.s b/test/MC/X86/AlignedBundling/relax-at-bundle-end.s new file mode 100644 index 0000000000..ab4affbbea --- /dev/null +++ b/test/MC/X86/AlignedBundling/relax-at-bundle-end.s @@ -0,0 +1,16 @@ +# RUN: llvm-mc -filetype=obj -triple x86_64-pc-linux-gnu %s -o - \ +# RUN: | llvm-objdump -disassemble -no-show-raw-insn - | FileCheck %s + +# Test that an instruction near a bundle end gets properly padded +# after it is relaxed. +.text +foo: + .bundle_align_mode 5 + .rept 29 + push %rax + .endr +# CHECK: 1c: push +# CHECK: 1d: nop +# CHECK: 20: jne + jne 0x100 + |