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Disable the PPC CTR-Loops pass by default.

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The pass itself works well, but the something in the Machine* infrastructure
does not understand terminators which define registers. Without the ability
to use the block-placement pass, etc. this causes performance regressions (and
so is turned off by default). Turning off the analysis turns off the problems
with the Machine* infrastructure.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@158206 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Hal Finkel
2012-06-08 15:38:25 +00:00
parent daa03ec604
commit 09fdc7baae
4 changed files with 19 additions and 6 deletions
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2
test/CodeGen/PowerPC/ctrloops.ll
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@@ -1,6 +1,6 @@
target datalayout = "E-p:64:64:64-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:64:64-f32:32:32-f64:64:64-v128:128:128-n32:64"
target triple = "powerpc64-unknown-freebsd10.0"
; RUN: llc < %s -march=ppc64 | FileCheck %s
; RUN: llc -enable-ppc-ctrloops -enable-ppc-ctrloop-analysis < %s -march=ppc64 | FileCheck %s
@a = common global i32 0, align 4