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b3a8585bc1
`llc -march` is problematic because it only switches the target architecture, but leaves the operating system unchanged. This occasionally leads to indeterministic tests because the OS from LLVM_DEFAULT_TARGET_TRIPLE is used. However we can simply always use `llc -mtriple` instead. This changes all the tests to do this to avoid people using -march when they copy and paste parts of tests. This patch: - Removes -march if the .ll file already has a matching `target triple` directive or -mtriple argument. - In all other cases changes -march=ppc32/-march=ppc64 to -mtriple=ppc32--/-mtriple=ppc64-- See also the discussion in https://reviews.llvm.org/D35287 llvm-svn: 309754
37 lines
1.3 KiB
LLVM
37 lines
1.3 KiB
LLVM
; RUN: llc -verify-machineinstrs -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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