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ARM: Fix crash in ARM backend inside of ARMConstantIslandPass

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The ARM backend did not expect LDRBi12 to hold a constant pool operand.
Allow for LLVM to deal with the instruction similar to how it deals with
LDRi12.

This fixes PR16215.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@183238 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
David Majnemer 2013-06-04 17:46:15 +00:00
parent 8240ef0410
commit 35e7751af4
2 changed files with 15 additions and 0 deletions
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1
lib/Target/ARM/ARMConstantIslandPass.cpp
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@ -753,6 +753,7 @@ initializeFunctionInfo(const std::vector<MachineInstr*> &CPEMIs) {
Scale = 4;
break;
case ARM::LDRBi12:
case ARM::LDRi12:
case ARM::LDRcp:
case ARM::t2LDRpci:

14
test/CodeGen/ARM/load-address-masked.ll Normal file
View File

@ -0,0 +1,14 @@
; RUN: llc < %s -mtriple=armv4t-unknown-linux-gnueabi -verify-machineinstrs | FileCheck %s
target datalayout = "e-p:32:32:32-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:64:64-f32:32:32-f64:64:64-v64:64:64-v128:64:128-a0:0:64-n32-S64"
target triple = "armv4t-unknown-linux-gnueabi"
@a = global i32 0, align 4
define i32 @foo() {
entry:
ret i32 and (i32 ptrtoint (i32* @a to i32), i32 255)
}
; CHECK: foo:
; CHECK: ldrb r0, .LCPI0_0