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Do not attempt to use ROR for Thumb1. 

Patch by Matt Fischer!

llvm-svn: 159538
This commit is contained in:
Bob Wilson 2012-07-02 17:22:47 +00:00
parent d0bcfe4d9d
commit 2297221028
2 changed files with 6 additions and 4 deletions
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4
llvm/lib/Target/ARM/ARMInstrThumb2.td
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@ -2161,8 +2161,8 @@ defm t2ROR : T2I_sh_ir<0b11, "ror", imm0_31,
BinOpFrag<(rotr node:$LHS, node:$RHS)>, "t2ROR">;
// (rotr x, (and y, 0x...1f)) ==> (ROR x, y)
def : Pat<(rotr rGPR:$lhs, (and rGPR:$rhs, lo5AllOne)),
(t2RORrr rGPR:$lhs, rGPR:$rhs)>;
def : T2Pat<(rotr rGPR:$lhs, (and rGPR:$rhs, lo5AllOne)),
(t2RORrr rGPR:$lhs, rGPR:$rhs)>;
let Uses = [CPSR] in {
def t2RRX : T2sTwoReg<(outs rGPR:$Rd), (ins rGPR:$Rm), IIC_iMOVsi,

4
llvm/test/CodeGen/Thumb2/thumb2-ror.ll
View File

@ -1,5 +1,5 @@
; RUN: llc < %s -march=thumb -mattr=+thumb2 | FileCheck %s
; RUN: llc < %s -march=thumb | FileCheck %s -check-prefix=THUMB1
; CHECK: f1:
; CHECK: ror.w r0, r0, #22
@ -13,6 +13,8 @@ define i32 @f1(i32 %a) {
; CHECK: f2:
; CHECK-NOT: and
; CHECK: ror
; THUMB1: f2
; THUMB1: and
define i32 @f2(i32 %v, i32 %nbits) {
entry:
%and = and i32 %nbits, 31