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db43217a24
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
37 lines
1.3 KiB
LLVM
37 lines
1.3 KiB
LLVM
; RUN: llc -verify-machineinstrs -march=ppc64 -mcpu=pwr7 -O2 -relocation-model=pic < %s | FileCheck %s
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target datalayout = "e-m:e-i64:64-n32:64"
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target triple = "powerpc64le-unknown-linux-gnu"
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; Test back-to-back stores of TLS variables to ensure call sequences no
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; longer overlap.
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@__once_callable = external thread_local global i8**
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@__once_call = external thread_local global void ()*
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define i64 @call_once(i64 %flag, i8* %ptr) {
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entry:
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%var = alloca i8*, align 8
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store i8* %ptr, i8** %var, align 8
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store i8** %var, i8*** @__once_callable, align 8
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store void ()* @__once_call_impl, void ()** @__once_call, align 8
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ret i64 %flag
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}
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; CHECK-LABEL: call_once:
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; CHECK: addi 3, {{[0-9]+}}, __once_callable@got@tlsgd@l
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; CHECK: bl __tls_get_addr(__once_callable@tlsgd)
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; CHECK-NEXT: nop
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; FIXME: We could check here for 'std {{[0-9]+}}, 0(3)', but that no longer
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; works because, with new scheduling freedom, we create a copy of R3 based on the
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; initial scheduling, but don't coalesce it again after we move the instructions
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; so that the copy is no longer necessary.
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; CHECK: addi 3, {{[0-9]+}}, __once_call@got@tlsgd@l
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; CHECK: bl __tls_get_addr(__once_call@tlsgd)
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; CHECK-NEXT: nop
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; FIXME: We don't really need the copy here either, we could move the store up.
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; CHECK: mr [[REG1:[0-9]+]], 3
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; CHECK: std {{[0-9]+}}, 0([[REG1]])
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declare void @__once_call_impl()
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