| # RUN: llc -mtriple=powerpc64le--linux-gnu -start-before ppc-mi-peepholes %s -o - -verify-machineinstrs | FileCheck %s |
| # RUN: llc -mtriple=powerpc64le--linux-gnu -run-pass ppc-mi-peepholes %s -o - -verify-machineinstrs | FileCheck %s --check-prefix=CHECK-PASS |
| |
| # The differential revision https://reviews.llvm.org/D60402 was supposed to |
| # collapse RLDICL/RLDICR into RLDIC when possible, but it missed removing the |
| # RLDICL instruction. This test case tests the fix for the bug. |
| |
| --- | |
| ; ModuleID = 'jump-tables-collapse-rotate-remove-SrcMI.ll' |
| source_filename = "jump-tables-collapse-rotate-remove-SrcMI.ll" |
| target datalayout = "e-m:e-i64:64-n32:64" |
| |
| define dso_local i64 @test(i64 %a, i64 %b) local_unnamed_addr { |
| entry: |
| %add = add nsw i64 %b, %a |
| ret i64 %add |
| } |
| |
| ... |
| --- |
| name: test |
| alignment: 16 |
| tracksRegLiveness: true |
| registers: |
| - { id: 0, class: g8rc } |
| - { id: 1, class: g8rc } |
| - { id: 2, class: g8rc } |
| liveins: |
| - { reg: '$x3', virtual-reg: '%0' } |
| - { reg: '$x4', virtual-reg: '%1' } |
| frameInfo: |
| maxAlignment: 1 |
| machineFunctionInfo: {} |
| body: | |
| body: | |
| bb.0.entry: |
| liveins: $x3, $x4 |
| |
| %1:g8rc = COPY $x4 |
| %0:g8rc = COPY $x3 |
| %2:g8rc = RLDICL killed %1, 0, 32 |
| %3:g8rc = RLDICR %2, 2, 61 |
| $x3 = COPY %3 |
| BLR8 implicit $lr8, implicit $rm, implicit $x3 |
| |
| ... |
| # CHECK-LABEL: test: |
| # CHECK: # %bb.0: # %entry |
| # CHECK-NEXT: rldic 3, 4, 2, 30 |
| # CHECK-NEXT: blr |
| # |
| # CHECK-PASS-NOT: %2:g8rc = RLDICL killed %1, 0, 32 |
| # CHECK-PASS-NOT: %3:g8rc = RLDICR %2, 2, 61 |
| # CHECK-PASS: %3:g8rc = RLDIC killed %1, 2, 30 |