eb7d16ea25
mflr is kind of expensive on Power version smaller than 10, so we should schedule the store for the mflr's def away from mflr. In epilogue, the expensive mtlr has no user for its def, so it doesn't matter that the load and the mtlr are back-to-back. Reviewed By: RolandF Differential Revision: https://reviews.llvm.org/D137423
28 lines
662 B
LLVM
28 lines
662 B
LLVM
; RUN: llc -verify-machineinstrs < %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 ptr @nest_receiver(ptr 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 ptr %arg
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}
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define ptr @nest_caller(ptr %arg) nounwind {
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; CHECK-LABEL: nest_caller:
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; CHECK: mr 11, 3
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; CHECK: stw 0, 20(1)
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; CHECK-NEXT: bl nest_receiver
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; CHECK: blr
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%result = call ptr @nest_receiver(ptr nest %arg)
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ret ptr %result
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}
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