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Also CSE non-pic load from constant pools.

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llvm-svn: 89440
This commit is contained in:
Evan Cheng 2009-11-20 02:10:27 +00:00
parent 1c98078e57
commit 5fe8b0b3c5
2 changed files with 15 additions and 3 deletions
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5
lib/Target/ARM/ARMBaseInstrInfo.cpp
View File

@ -978,7 +978,10 @@ bool ARMBaseInstrInfo::isIdentical(const MachineInstr *MI0,
const MachineInstr *MI1,
const MachineRegisterInfo *MRI) const {
int Opcode = MI0->getOpcode();
if (Opcode == ARM::t2LDRpci_pic || Opcode == ARM::tLDRpci_pic) {
if (Opcode == ARM::t2LDRpci ||
Opcode == ARM::t2LDRpci_pic ||
Opcode == ARM::tLDRpci ||
Opcode == ARM::tLDRpci_pic) {
if (MI1->getOpcode() != Opcode)
return false;
if (MI0->getNumOperands() != MI1->getNumOperands())

13
test/CodeGen/Thumb2/machine-licm.ll
View File

@ -1,4 +1,5 @@
; RUN: llc < %s -mtriple=thumbv7-apple-darwin -relocation-model=pic -disable-fp-elim | FileCheck %s
; RUN: llc < %s -mtriple=thumbv7-apple-darwin -disable-fp-elim | FileCheck %s
; RUN: llc < %s -mtriple=thumbv7-apple-darwin -relocation-model=pic -disable-fp-elim | FileCheck %s --check-prefix=PIC
; rdar://7353541
; rdar://7354376
@ -17,12 +18,20 @@ entry:
bb.nph: ; preds = %entry
; CHECK: BB#1
; CHECK: ldr.n r2, LCPI1_0
; CHECK: add r2, pc
; CHECK: ldr r{{[0-9]+}}, [r2]
; CHECK: LBB1_2
; CHECK: LCPI1_0:
; CHECK-NOT: LCPI1_1:
; CHECK: .section
; PIC: BB#1
; PIC: ldr.n r2, LCPI1_0
; PIC: add r2, pc
; PIC: ldr r{{[0-9]+}}, [r2]
; PIC: LBB1_2
; PIC: LCPI1_0:
; PIC-NOT: LCPI1_1:
; PIC: .section
%.pre = load i32* @GV, align 4 ; <i32> [#uses=1]
br label %bb