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llvm-project/llvm/test/CodeGen/MIR/AArch64/cfi-def-cfa.mir

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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 08:18:46 +08:00
# RUN: llc -mtriple=aarch64-none-linux-gnu -start-after branch-folder -stop-after branch-folder -o /dev/null %s 2>&1 | FileCheck %s
MIR Serialization: Serialize the '.cfi_def_cfa' CFI instruction. llvm-svn: 243554
2015-07-30 02:57:23 +08:00
# This test ensures that the MIR parser parses the .cfi_def_cfa operands
# correctly.
--- |
declare void @foo()
define void @trivial_fp_func() {
entry:
call void @foo()
ret void
}
...
---
name: trivial_fp_func
MIR Serialization: Change MIR syntax - use custom syntax for MBBs. This commit modifies the way the machine basic blocks are serialized - now the machine basic blocks are serialized using a custom syntax instead of relying on YAML primitives. Instead of using YAML mappings to represent the individual machine basic blocks in a machine function's body, the new syntax uses a single YAML block scalar which contains all of the machine basic blocks and instructions for that function. This is an example of a function's body that uses the old syntax: body: - id: 0 name: entry instructions: - '%eax = MOV32r0 implicit-def %eflags' - 'RETQ %eax' ... The same body is now written like this: body: | bb.0.entry: %eax = MOV32r0 implicit-def %eflags RETQ %eax ... This syntax change is motivated by the fact that the bundled machine instructions didn't map that well to the old syntax which was using a single YAML sequence to store all of the machine instructions in a block. The bundled machine instructions internally use flags like BundledPred and BundledSucc to determine the bundles, and serializing them as MI flags using the old syntax would have had a negative impact on the readability and the ease of editing for MIR files. The new syntax allows me to serialize the bundled machine instructions using a block construct without relying on the internal flags, for example: BUNDLE implicit-def dead %itstate, implicit-def %s1 ... { t2IT 1, 24, implicit-def %itstate %s1 = VMOVS killed %s0, 1, killed %cpsr, implicit killed %itstate } This commit also converts the MIR testcases to the new syntax. I developed a script that can convert from the old syntax to the new one. I will post the script on the llvm-commits mailing list in the thread for this commit. llvm-svn: 244982
2015-08-14 07:10:16 +08:00
body: |
bb.0.entry:
liveins: %lr, %fp, %lr, %fp
%sp = frame-setup STPXpre killed %fp, killed %lr, %sp, -2
%fp = frame-setup ADDXri %sp, 0, 0
; CHECK: CFI_INSTRUCTION .cfi_def_cfa %w29, 16
frame-setup CFI_INSTRUCTION .cfi_def_cfa %w29, 16
frame-setup CFI_INSTRUCTION .cfi_offset %w30, -8
frame-setup CFI_INSTRUCTION .cfi_offset %w29, -16
BL @foo, csr_aarch64_aapcs, implicit-def dead %lr, implicit %sp, implicit-def %sp
%sp, %fp, %lr = LDPXpost %sp, 2
RET_ReallyLR
MIR Serialization: Serialize the '.cfi_def_cfa' CFI instruction. llvm-svn: 243554
2015-07-30 02:57:23 +08:00
...