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f91045042a
This adds support for the 'nest' attribute, which allows the static chain register to be set for functions calls under non-Darwin PPC/PPC64 targets. r11 is the chain register (which the PPC64 ELF ABI calls the "environment pointer"). For indirect calls under PPC64 ELFv1, this would normally be loaded from the function descriptor, but providing an explicit 'nest' parameter will override that process and use the value provided. This allows __builtin_call_with_static_chain to work as expected on PowerPC. llvm-svn: 241984
27 lines
617 B
LLVM
27 lines
617 B
LLVM
; RUN: llc < %s | FileCheck %s
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target datalayout = "E-m:e-p:32:32-i64:64-n32"
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target triple = "powerpc-unknown-linux-gnu"
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; Tests that the 'nest' parameter attribute causes the relevant parameter to be
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; passed in the right register (r11 for PPC).
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define i8* @nest_receiver(i8* nest %arg) nounwind {
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; CHECK-LABEL: nest_receiver:
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; CHECK: # BB#0:
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; CHECK-NEXT: mr 3, 11
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; CHECK-NEXT: blr
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ret i8* %arg
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}
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define i8* @nest_caller(i8* %arg) nounwind {
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; CHECK-LABEL: nest_caller:
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; CHECK: mr 11, 3
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; CHECK-NEXT: bl nest_receiver
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; CHECK: blr
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%result = call i8* @nest_receiver(i8* nest %arg)
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ret i8* %result
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}
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