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Revert r260979 "[X86] Enable the LEA optimization pass by default."

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Asserts are still firing in Chromium builds. PR26575.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@261058 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Hans Wennborg 2016-02-17 02:49:59 +00:00
parent 1c988595b7
commit 84b54daea5
3 changed files with 6 additions and 7 deletions
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9
lib/Target/X86/X86OptimizeLEAs.cpp
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@ -35,10 +35,9 @@ using namespace llvm;
#define DEBUG_TYPE "x86-optimize-LEAs"
static cl::opt<bool>
DisableX86LEAOpt("disable-x86-lea-opt", cl::Hidden,
cl::desc("X86: Disable LEA optimizations."),
cl::init(false));
static cl::opt<bool> EnableX86LEAOpt("enable-x86-lea-opt", cl::Hidden,
cl::desc("X86: Enable LEA optimizations."),
cl::init(false));
STATISTIC(NumSubstLEAs, "Number of LEA instruction substitutions");
STATISTIC(NumRedundantLEAs, "Number of redundant LEA instructions removed");
@ -574,7 +573,7 @@ bool OptimizeLEAPass::runOnMachineFunction(MachineFunction &MF) {
bool Changed = false;
// Perform this optimization only if we care about code size.
if (DisableX86LEAOpt || !MF.getFunction()->optForSize())
if (!EnableX86LEAOpt || !MF.getFunction()->optForSize())
return false;
MRI = &MF.getRegInfo();

2
test/CodeGen/X86/lea-opt-memop-check.ll
View File

@ -1,5 +1,5 @@
; REQUIRES: asserts
; RUN: llc < %s -march=x86 -mtriple=i686-pc-win32 | FileCheck %s
; RUN: llc < %s -march=x86 -mtriple=i686-pc-win32 -enable-x86-lea-opt | FileCheck %s
; PR26575
; Assertion `(Disp->isImm() || Disp->isGlobal()) && (Other.Disp->isImm() || Other.Disp->isGlobal()) && "Address displacement operand is always an immediate or a global"' failed.

2
test/CodeGen/X86/lea-opt.ll
View File

@ -1,4 +1,4 @@
; RUN: llc < %s -mtriple=x86_64-linux | FileCheck %s
; RUN: llc < %s -mtriple=x86_64-linux -enable-x86-lea-opt | FileCheck %s
%struct.anon1 = type { i32, i32, i32 }
%struct.anon2 = type { i32, [32 x i32], i32 }