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