1# RUN: llc -mtriple=powerpc64le--linux-gnu -start-before ppc-mi-peepholes %s -o - -verify-machineinstrs | FileCheck %s 2# RUN: llc -mtriple=powerpc64le--linux-gnu -run-pass ppc-mi-peepholes %s -o - -verify-machineinstrs | FileCheck %s --check-prefix=CHECK-PASS 3 4# The differential revision https://reviews.llvm.org/D60402 was supposed to 5# collapse RLDICL/RLDICR into RLDIC when possible, but it missed removing the 6# RLDICL instruction. This test case tests the fix for the bug. 7 8--- | 9 ; ModuleID = 'jump-tables-collapse-rotate-remove-SrcMI.ll' 10 source_filename = "jump-tables-collapse-rotate-remove-SrcMI.ll" 11 target datalayout = "e-m:e-i64:64-n32:64" 12 13 define dso_local i64 @test(i64 %a, i64 %b) local_unnamed_addr { 14 entry: 15 %add = add nsw i64 %b, %a 16 ret i64 %add 17 } 18 19... 20--- 21name: test 22alignment: 16 23tracksRegLiveness: true 24registers: 25 - { id: 0, class: g8rc } 26 - { id: 1, class: g8rc } 27 - { id: 2, class: g8rc } 28liveins: 29 - { reg: '$x3', virtual-reg: '%0' } 30 - { reg: '$x4', virtual-reg: '%1' } 31frameInfo: 32 maxAlignment: 1 33machineFunctionInfo: {} 34body: | 35body: | 36 bb.0.entry: 37 liveins: $x3, $x4 38 39 %1:g8rc = COPY $x4 40 %0:g8rc = COPY $x3 41 %2:g8rc = RLDICL killed %1, 0, 32 42 %3:g8rc = RLDICR %2, 2, 61 43 $x3 = COPY %3 44 BLR8 implicit $lr8, implicit $rm, implicit $x3 45 46... 47# CHECK-LABEL: test: 48# CHECK: # %bb.0: # %entry 49# CHECK-NEXT: rldic 3, 4, 2, 30 50# CHECK-NEXT: blr 51# 52# CHECK-PASS-NOT: %2:g8rc = RLDICL killed %1, 0, 32 53# CHECK-PASS-NOT: %3:g8rc = RLDICR %2, 2, 61 54# CHECK-PASS: %3:g8rc = RLDIC killed %1, 2, 30 55