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llvm-mirror/test/CodeGen/X86/virtual-registers-cleared-in-machine-functions-liveins.ll
Justin Lebar 975bf7a977 When printing MIR, output to errs() rather than outs().
Summary:
Without this, this command

  $ llvm-run llc -stop-after machine-cp -o - <( echo '' )

outputs an error, because we close stdout twice -- once when closing the
file opened for "-o", and again when closing outs().

Also clarify in the outs() definition that you can't ever call it if you
want to open your own raw_fd_ostream on stdout.

Reviewers: jroelofs, tstellarAMD

Subscribers: jholewinski, qcolombet, dsanders, llvm-commits

Differential Revision: http://reviews.llvm.org/D17422

llvm-svn: 261286
2016-02-19 00:18:46 +00:00

20 lines
680 B
LLVM

; RUN: llc -mtriple=x86_64-unknown-unknown -o /dev/null -stop-after machine-scheduler %s 2>&1 | FileCheck %s --check-prefix=PRE-RA
; RUN: llc -mtriple=x86_64-unknown-unknown -o /dev/null -stop-after prologepilog %s 2>&1 | FileCheck %s --check-prefix=POST-RA
; This test verifies that the virtual register references in machine function's
; liveins are cleared after register allocation.
define i32 @test(i32 %a, i32 %b) {
body:
%c = mul i32 %a, %b
ret i32 %c
}
; PRE-RA: liveins:
; PRE-RA-NEXT: - { reg: '%edi', virtual-reg: '%0' }
; PRE-RA-NEXT: - { reg: '%esi', virtual-reg: '%1' }
; POST-RA: liveins:
; POST-RA-NEXT: - { reg: '%edi' }
; POST-RA-NEXT: - { reg: '%esi' }