Skip to content

[LV] Enable auto-vectorisation of loops with uncountable exits #133099

New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

Sign up for GitHub

By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.

Already on GitHub? Sign in to your account

Merged
merged 2 commits into from
Jun 27, 2025
Merged

[LV] Enable auto-vectorisation of loops with uncountable exits #133099

Show file tree
Hide file tree
Changes from all commits
Commits
Show all changes
2 commits
Select commit Hold shift + click to select a range
dafaf13
[LV] Enable auto-vectorisation of loops with uncountable exits
david-arm Jun 24, 2025
2c05804
Merge branch 'main' into ee_enable
david-arm Jun 27, 2025
File filter

Filter by extension

Filter by extension
Conversations
Failed to load comments.
Loading
Jump to
Jump to file
Failed to load files.
Loading
Diff view
Diff view
2 changes: 1 addition & 1 deletion llvm/lib/Transforms/Vectorize/LoopVectorize.cpp
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -395,7 +395,7 @@ static cl::opt<bool> UseWiderVFIfCallVariantsPresent(
cl::desc("Try wider VFs if they enable the use of vector variants"));

static cl::opt<bool> EnableEarlyExitVectorization(
"enable-early-exit-vectorization", cl::init(false), cl::Hidden,
"enable-early-exit-vectorization", cl::init(true), cl::Hidden,
cl::desc(
"Enable vectorization of early exit loops with uncountable exits."));

Expand Down
2 changes: 1 addition & 1 deletion llvm/test/Transforms/LoopVectorize/AArch64/early_exit_costs.ll
View file
Open in desktop
Original file line number Diff line number Diff line change
@@ -1,5 +1,5 @@
; REQUIRES: asserts
; RUN: opt -S < %s -p loop-vectorize -enable-early-exit-vectorization -disable-output \
; RUN: opt -S < %s -p loop-vectorize -disable-output \
; RUN: -debug-only=loop-vectorize 2>&1 | FileCheck %s --check-prefixes=CHECK

target triple = "aarch64-unknown-linux-gnu"
Expand Down
2 changes: 1 addition & 1 deletion llvm/test/Transforms/LoopVectorize/AArch64/simple_early_exit.ll
View file
Open in desktop
Original file line number Diff line number Diff line change
@@ -1,5 +1,5 @@
; NOTE: Assertions have been autogenerated by utils/update_test_checks.py UTC_ARGS: --version 4
; RUN: opt -S < %s -p loop-vectorize -enable-early-exit-vectorization | FileCheck %s --check-prefixes=CHECK
; RUN: opt -S < %s -p loop-vectorize | FileCheck %s --check-prefixes=CHECK

target triple = "aarch64-unknown-linux-gnu"

Expand Down
2 changes: 1 addition & 1 deletion llvm/test/Transforms/LoopVectorize/AArch64/single-early-exit-interleave.ll
View file
Open in desktop
Original file line number Diff line number Diff line change
@@ -1,5 +1,5 @@
; NOTE: Assertions have been autogenerated by utils/update_test_checks.py UTC_ARGS: --check-globals none --version 4
; RUN: opt -p loop-vectorize -enable-early-exit-vectorization -force-vector-interleave=4 -S %s | FileCheck %s
; RUN: opt -p loop-vectorize -force-vector-interleave=4 -S %s | FileCheck %s

target triple = "aarch64-unknown-linux-gnu"

Expand Down
2 changes: 1 addition & 1 deletion llvm/test/Transforms/LoopVectorize/early_exit_legality.ll
View file
Open in desktop
Original file line number Diff line number Diff line change
@@ -1,6 +1,6 @@
; NOTE: Assertions have been autogenerated by utils/update_test_checks.py UTC_ARGS: --version 4
; REQUIRES: asserts
; RUN: opt -S < %s -p loop-vectorize -debug-only=loop-vectorize -enable-early-exit-vectorization -force-vector-width=4 -disable-output 2>&1 | FileCheck %s
; RUN: opt -S < %s -p loop-vectorize -debug-only=loop-vectorize -force-vector-width=4 -disable-output 2>&1 | FileCheck %s

declare void @init_mem(ptr, i64);

Expand Down
2 changes: 1 addition & 1 deletion llvm/test/Transforms/LoopVectorize/early_exit_store_legality.ll
View file
Open in desktop
Original file line number Diff line number Diff line change
@@ -1,5 +1,5 @@
; REQUIRES: asserts
; RUN: opt -S < %s -p loop-vectorize -debug-only=loop-vectorize -enable-early-exit-vectorization -force-vector-width=4 -disable-output 2>&1 | FileCheck %s
; RUN: opt -S < %s -p loop-vectorize -debug-only=loop-vectorize -force-vector-width=4 -disable-output 2>&1 | FileCheck %s

define i64 @loop_contains_store(ptr %dest) {
; CHECK-LABEL: LV: Checking a loop in 'loop_contains_store'
Expand Down
2 changes: 1 addition & 1 deletion llvm/test/Transforms/LoopVectorize/multi_early_exit.ll
View file
Open in desktop
Original file line number Diff line number Diff line change
@@ -1,5 +1,5 @@
; NOTE: Assertions have been autogenerated by utils/update_test_checks.py UTC_ARGS: --version 4
; RUN: opt -S < %s -p loop-vectorize -enable-early-exit-vectorization | FileCheck %s
; RUN: opt -S < %s -p loop-vectorize | FileCheck %s

declare void @init_mem(ptr, i64);

Expand Down
2 changes: 1 addition & 1 deletion llvm/test/Transforms/LoopVectorize/multi_early_exit_live_outs.ll
View file
Open in desktop
Original file line number Diff line number Diff line change
@@ -1,5 +1,5 @@
; NOTE: Assertions have been autogenerated by utils/update_test_checks.py UTC_ARGS: --version 4
; RUN: opt -S < %s -p loop-vectorize -enable-early-exit-vectorization | FileCheck %s
; RUN: opt -S < %s -p loop-vectorize | FileCheck %s

declare void @init_mem(ptr, i64);

Expand Down
2 changes: 1 addition & 1 deletion llvm/test/Transforms/LoopVectorize/single-early-exit-interleave.ll
View file
Open in desktop
Original file line number Diff line number Diff line change
@@ -1,5 +1,5 @@
; NOTE: Assertions have been autogenerated by utils/update_test_checks.py UTC_ARGS: --check-globals none --version 4
; RUN: opt -p loop-vectorize -enable-early-exit-vectorization -force-vector-width=4 -force-vector-interleave=4 -S %s | FileCheck --check-prefix=VF4IC4 %s
; RUN: opt -p loop-vectorize -force-vector-width=4 -force-vector-interleave=4 -S %s | FileCheck --check-prefix=VF4IC4 %s

declare void @init_mem(ptr, i64);

Expand Down
2 changes: 1 addition & 1 deletion llvm/test/Transforms/LoopVectorize/single_early_exit.ll
View file
Open in desktop
Original file line number Diff line number Diff line change
@@ -1,5 +1,5 @@
; NOTE: Assertions have been autogenerated by utils/update_test_checks.py UTC_ARGS: --version 4
; RUN: opt -S < %s -p loop-vectorize -enable-early-exit-vectorization -force-vector-width=4 | FileCheck %s
; RUN: opt -S < %s -p loop-vectorize -force-vector-width=4 | FileCheck %s

declare void @init_mem(ptr, i64);

Expand Down
2 changes: 1 addition & 1 deletion llvm/test/Transforms/LoopVectorize/single_early_exit_live_outs.ll
View file
Open in desktop
Original file line number Diff line number Diff line change
@@ -1,5 +1,5 @@
; NOTE: Assertions have been autogenerated by utils/update_test_checks.py UTC_ARGS: --version 4
; RUN: opt -S < %s -p loop-vectorize -enable-early-exit-vectorization -force-vector-width=4 | FileCheck %s
; RUN: opt -S < %s -p loop-vectorize -force-vector-width=4 | FileCheck %s

declare void @init_mem(ptr, i64);

Expand Down
2 changes: 1 addition & 1 deletion llvm/test/Transforms/LoopVectorize/single_early_exit_with_outer_loop.ll
View file
Open in desktop
Original file line number Diff line number Diff line change
@@ -1,4 +1,4 @@
; RUN: opt -S < %s -passes='loop-vectorize,verify<loops>,print<loops>' -disable-output -enable-early-exit-vectorization 2>&1 | FileCheck %s
; RUN: opt -S < %s -passes='loop-vectorize,verify<loops>,print<loops>' -disable-output 2>&1 | FileCheck %s

declare void @init_mem(ptr, i64);

Expand Down
2 changes: 1 addition & 1 deletion llvm/test/Transforms/LoopVectorize/uncountable-early-exit-vplan.ll
View file
Open in desktop
Original file line number Diff line number Diff line change
@@ -1,5 +1,5 @@
; NOTE: Assertions have been autogenerated by utils/update_test_checks.py UTC_ARGS: --version 5
; RUN: opt -p loop-vectorize -force-vector-width=4 -force-vector-interleave=1 -S -enable-early-exit-vectorization -debug %s 2>&1 | FileCheck %s
; RUN: opt -p loop-vectorize -force-vector-width=4 -force-vector-interleave=1 -S -debug %s 2>&1 | FileCheck %s

; REQUIRES: asserts

Expand Down
2 changes: 1 addition & 1 deletion llvm/test/Transforms/LoopVectorize/unsupported_early_exit.ll
View file
Open in desktop
Original file line number Diff line number Diff line change
@@ -1,5 +1,5 @@
; NOTE: Assertions have been autogenerated by utils/update_test_checks.py UTC_ARGS: --version 4
; RUN: opt -S < %s -p loop-vectorize -enable-early-exit-vectorization -force-vector-width=4 | FileCheck %s
; RUN: opt -S < %s -p loop-vectorize -force-vector-width=4 | FileCheck %s

declare void @init_mem(ptr, i64);

Expand Down
6 changes: 3 additions & 3 deletions llvm/test/Transforms/LoopVectorize/vector-loop-backedge-elimination-early-exit.ll
View file
Open in desktop
Original file line number Diff line number Diff line change
@@ -1,7 +1,7 @@
; NOTE: Assertions have been autogenerated by utils/update_test_checks.py UTC_ARGS: --check-globals none --version 5
; RUN: opt -passes='loop-vectorize,verify<loops>' -force-vector-width=8 -force-vector-interleave=1 -enable-early-exit-vectorization -S %s | FileCheck --check-prefixes=VF8UF1 %s
; RUN: opt -passes='loop-vectorize,verify<loops>' -force-vector-width=8 -force-vector-interleave=2 -enable-early-exit-vectorization -S %s | FileCheck --check-prefixes=VF8UF2 %s
; RUN: opt -passes='loop-vectorize,verify<loops>' -force-vector-width=16 -force-vector-interleave=1 -enable-early-exit-vectorization -S %s | FileCheck --check-prefixes=VF16UF1 %s
; RUN: opt -passes='loop-vectorize,verify<loops>' -force-vector-width=8 -force-vector-interleave=1 -S %s | FileCheck --check-prefixes=VF8UF1 %s
; RUN: opt -passes='loop-vectorize,verify<loops>' -force-vector-width=8 -force-vector-interleave=2 -S %s | FileCheck --check-prefixes=VF8UF2 %s
; RUN: opt -passes='loop-vectorize,verify<loops>' -force-vector-width=16 -force-vector-interleave=1 -S %s | FileCheck --check-prefixes=VF16UF1 %s

target datalayout = "e-m:o-i64:64-i128:128-n32:64-S128"

Expand Down