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llvm-project/llvm/test/CodeGen/PowerPC/ppc64-icbt-pwr8.ll

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[PPC64] Add support for the ICBT instruction on POWER8. Patch by Kit Barton. Support for the ICBT instruction is currently present, but limited to embedded processors. This change adds a new FeatureICBT that can be used to identify whether the ICBT instruction is available on a specific processor. Two new tests are added: * Positive test to ensure the icbt instruction is present when using -mcpu=pwr8 * Negative test to ensure the icbt instruction is not generated when using -mcpu=pwr7 Both test cases use the Prefetch opcode in LLVM. They are based on the ppc64-prefetch.ll test case. llvm-svn: 226033
2015-01-15 04:17:10 +08:00
; Test the ICBT instruction on POWER8
; Copied from the ppc64-prefetch.ll test
Adding -verify-machineinstrs option to PowerPC tests Currently we have a number of tests that fail with -verify-machineinstrs. To detect this cases earlier we add the option to the testcases with the exception of tests that will currently fail with this option. PR 27456 keeps track of this failures. No code review, as discussed with Hal Finkel. llvm-svn: 277624
2016-08-04 02:17:35 +08:00
; RUN: llc -verify-machineinstrs -mtriple=powerpc64-unknown-linux-gnu -mcpu=pwr8 < %s | FileCheck %s
[PPC64] Add support for the ICBT instruction on POWER8. Patch by Kit Barton. Support for the ICBT instruction is currently present, but limited to embedded processors. This change adds a new FeatureICBT that can be used to identify whether the ICBT instruction is available on a specific processor. Two new tests are added: * Positive test to ensure the icbt instruction is present when using -mcpu=pwr8 * Negative test to ensure the icbt instruction is not generated when using -mcpu=pwr7 Both test cases use the Prefetch opcode in LLVM. They are based on the ppc64-prefetch.ll test case. llvm-svn: 226033
2015-01-15 04:17:10 +08:00
declare void @llvm.prefetch(i8*, i32, i32, i32)
define void @test(i8* %a, ...) nounwind {
entry:
call void @llvm.prefetch(i8* %a, i32 0, i32 3, i32 0)
ret void
; CHECK-LABEL: @test
; CHECK: icbt
}