diff options
| author | Kyle Butt <kyle+llvm@iteratee.net> | 2017-01-10 23:04:30 +0000 |
|---|---|---|
| committer | Kyle Butt <kyle+llvm@iteratee.net> | 2017-01-10 23:04:30 +0000 |
| commit | ada6595a526d71df04988eb0a4b4fe84df398ded (patch) | |
| tree | 4c83d26a15416cef84ca179748260d8663ac6221 /test/CodeGen/Thumb | |
| parent | d8c5040a18d991281e69411cdf77061c7155750b (diff) | |
CodeGen: Allow small copyable blocks to "break" the CFG.
When choosing the best successor for a block, ordinarily we would have preferred
a block that preserves the CFG unless there is a strong probability the other
direction. For small blocks that can be duplicated we now skip that requirement
as well.
Differential revision: https://reviews.llvm.org/D27742
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@291609 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'test/CodeGen/Thumb')
| -rw-r--r-- | test/CodeGen/Thumb/thumb-shrink-wrapping.ll | 11 |
1 files changed, 7 insertions, 4 deletions
diff --git a/test/CodeGen/Thumb/thumb-shrink-wrapping.ll b/test/CodeGen/Thumb/thumb-shrink-wrapping.ll index 6114b72569e..f6c137b9e41 100644 --- a/test/CodeGen/Thumb/thumb-shrink-wrapping.ll +++ b/test/CodeGen/Thumb/thumb-shrink-wrapping.ll @@ -1,11 +1,12 @@ -; RUN: llc %s -o - -enable-shrink-wrap=true -ifcvt-fn-start=1 -ifcvt-fn-stop=0 -mtriple=thumb-macho \ +; RUN: llc %s -o - -enable-shrink-wrap=true -ifcvt-fn-start=1 -ifcvt-fn-stop=0 -tail-dup-placement=0 -mtriple=thumb-macho \ ; RUN: | FileCheck %s --check-prefix=CHECK --check-prefix=ENABLE --check-prefix=ENABLE-V4T -; RUN: llc %s -o - -enable-shrink-wrap=true -ifcvt-fn-start=1 -ifcvt-fn-stop=0 -mtriple=thumbv5-macho \ +; RUN: llc %s -o - -enable-shrink-wrap=true -ifcvt-fn-start=1 -ifcvt-fn-stop=0 -tail-dup-placement=0 -mtriple=thumbv5-macho \ ; RUN: | FileCheck %s --check-prefix=CHECK --check-prefix=ENABLE --check-prefix=ENABLE-V5T -; RUN: llc %s -o - -enable-shrink-wrap=false -ifcvt-fn-start=1 -ifcvt-fn-stop=0 -mtriple=thumb-macho \ +; RUN: llc %s -o - -enable-shrink-wrap=false -ifcvt-fn-start=1 -ifcvt-fn-stop=0 -tail-dup-placement=0 -mtriple=thumb-macho \ ; RUN: | FileCheck %s --check-prefix=CHECK --check-prefix=DISABLE --check-prefix=DISABLE-V4T -; RUN: llc %s -o - -enable-shrink-wrap=false -ifcvt-fn-start=1 -ifcvt-fn-stop=0 -mtriple=thumbv5-macho \ +; RUN: llc %s -o - -enable-shrink-wrap=false -ifcvt-fn-start=1 -ifcvt-fn-stop=0 -tail-dup-placement=0 -mtriple=thumbv5-macho \ ; RUN: | FileCheck %s --check-prefix=CHECK --check-prefix=DISABLE --check-prefix=DISABLE-V5T + ; ; Note: Lots of tests use inline asm instead of regular calls. ; This allows to have a better control on what the allocation will do. @@ -15,6 +16,8 @@ ; edges. ; Also disable the late if-converter as it makes harder to reason on ; the diffs. +; Disable tail-duplication during placement, as v4t vs v5t get different +; results due to branches not being analyzable under v5 ; Initial motivating example: Simple diamond with a call just on one side. ; CHECK-LABEL: foo: |