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| author | Andrew Trick <atrick@apple.com> | 2013-07-25 18:35:19 +0000 |
|---|---|---|
| committer | Andrew Trick <atrick@apple.com> | 2013-07-25 18:35:19 +0000 |
| commit | 8adae96fd905daa8835b6fde5e74e25d818c7471 (patch) | |
| tree | 020563bcb74479535c2e949ca6916e2c277f307f /test/CodeGen/X86/legalize-shift-64.ll | |
| parent | 6ea2b9608a38e9b53d208ff85051e8e3ed53192c (diff) | |
| download | llvm-8adae96fd905daa8835b6fde5e74e25d818c7471.tar.gz llvm-8adae96fd905daa8835b6fde5e74e25d818c7471.tar.bz2 llvm-8adae96fd905daa8835b6fde5e74e25d818c7471.tar.xz | |
Evict local live ranges if they can be reassigned.
The previous change to local live range allocation also suppressed
eviction of local ranges. In rare cases, this could result in more
expensive register choices. This commit actually revives a feature
that I added long ago: check if live ranges can be reassigned before
eviction. But now it only happens in rare cases of evicting a local
live range because another local live range wants a cheaper register.
The benefit is improved code size for some benchmarks on x86 and armv7.
I measured no significant compile time increase and performance
changes are noise.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@187140 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'test/CodeGen/X86/legalize-shift-64.ll')
| -rw-r--r-- | test/CodeGen/X86/legalize-shift-64.ll | 4 |
1 files changed, 1 insertions, 3 deletions
diff --git a/test/CodeGen/X86/legalize-shift-64.ll b/test/CodeGen/X86/legalize-shift-64.ll index 3cdd49412a..77364688af 100644 --- a/test/CodeGen/X86/legalize-shift-64.ll +++ b/test/CodeGen/X86/legalize-shift-64.ll @@ -1,6 +1,4 @@ -; RUN: true -; disabled: llc -mcpu=generic -mtriple=i686-unknown-unknown < %s | FileCheck %s -; Disabled for a single commit only. +; RUN: llc -mcpu=generic -mtriple=i686-unknown-unknown < %s | FileCheck %s define i64 @test1(i32 %xx, i32 %test) nounwind { %conv = zext i32 %xx to i64 %and = and i32 %test, 7 |