[llvm] def4253 - [NFC][CodeGen][AArch64] Add tests for unconditional branch duplication

[Daniel Hoekwater via llvm-commits]

Author: Daniel Hoekwater
Date: 2024-01-05T23:39:01Z
New Revision: def42537ee65fd5d309b7ab70a9ea4d32eb6aadd

URL: https://github.com/llvm/llvm-project/commit/def42537ee65fd5d309b7ab70a9ea4d32eb6aadd
DIFF: https://github.com/llvm/llvm-project/commit/def42537ee65fd5d309b7ab70a9ea4d32eb6aadd.diff

LOG: [NFC][CodeGen][AArch64] Add tests for unconditional branch duplication

c9f3288 introduced unconditional branch deduplication for basic block
sections and machine function splitting, but it didn't add tests for
AArch64 since prior behavior crashed the test.

This change adds tests for AArch64 and has no functional change.

Added: 
    

Modified: 
    llvm/test/CodeGen/Generic/machine-function-splitter.ll

Removed: 
    


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diff  --git a/llvm/test/CodeGen/Generic/machine-function-splitter.ll b/llvm/test/CodeGen/Generic/machine-function-splitter.ll
index a236f201eaafc5..d7cc3941ee7a37 100644
--- a/llvm/test/CodeGen/Generic/machine-function-splitter.ll
+++ b/llvm/test/CodeGen/Generic/machine-function-splitter.ll
@@ -12,6 +12,7 @@
 ; RUN: llc < %s -mtriple=aarch64-unknown-linux-gnu -aarch64-min-jump-table-entries=4 -enable-split-machine-functions -mfs-psi-cutoff=0 -mfs-count-threshold=2000 | FileCheck %s --dump-input=always -check-prefixes=MFS-OPTS1,MFS-OPTS1-AARCH64
 ; RUN: llc < %s -mtriple=aarch64-unknown-linux-gnu -aarch64-min-jump-table-entries=4 -enable-split-machine-functions -mfs-psi-cutoff=950000 | FileCheck %s -check-prefixes=MFS-OPTS2,MFS-OPTS2-AARCH64
 ; RUN: llc < %s -mtriple=aarch64-unknown-linux-gnu -aarch64-min-jump-table-entries=4 -enable-split-machine-functions -mfs-split-ehcode | FileCheck %s -check-prefixes=MFS-EH-SPLIT,MFS-EH-SPLIT-AARCH64
+; RUN: llc < %s -mtriple=aarch64 -split-machine-functions -O0 -mfs-psi-cutoff=0 -mfs-count-threshold=10000 | FileCheck %s -check-prefixes=MFS-O0,MFS-O0-AARCH64
 ; RUN: llc < %s -mtriple=aarch64 -enable-split-machine-functions -aarch64-redzone | FileCheck %s -check-prefixes=MFS-REDZONE-AARCH64
 
 ; COM: Machine function splitting with AFDO profiles
@@ -470,9 +471,8 @@ define void @foo16(i1 zeroext %0) nounwind !prof !14 !section_prefix !15 {
 ; MFS-O0-LABEL:               foo16
 ; MFS-O0-X86:                 jmp
 ; MFS-O0-X86-NOT:             jmp
-; MFS-O0-AARCH64:                 br
-; MFS-O0-AARCH64:                 br
-; MFS-O0-AARCH64-NOT:             br
+; MFS-O0-AARCH64:                 b       foo16.cold
+; MFS-O0-AARCH64-NOT:             b       foo16.cold
 ; MFS-O0:                     .section        .text.split.foo16
 ; MFS-O0-NEXT:                foo16.cold
   %2 = call i32 @baz()