derek/TheRock
1
0 Fork 0
Code Issues Pull Requests Actions 1 Packages Projects Releases Wiki Activity
Files
1a182e2dac58879f215c0fad0f5f78c76dcafe56
TheRock/compiler/amd-llvm/llvm/test/Transforms/InstCombine/ctlz-cttz.ll
T
derek.holloway 7502bf64a4
CodeQL / Analyze (actions) (push) Canceled after 0s
Details
CodeQL / Analyze (python) (push) Canceled after 0s
Details
pre-commit / pre-commit (push) Canceled after 0s
Details
Multi-Arch CI / setup (push) Canceled after 0s
Details
Publish build_manylinux_x86_64 images / publish_build_manylinux_x86_64 (push) Canceled after 0s
Details
Setup (Multi-Arch) / setup (push) Canceled after 0s
Details
Multi-Arch CI / Linux::${{ fromJSON(needs.setup.outputs.linux_build_config || '{}').build_variant_label || 'skip' }} (push) Canceled after 0s
Details
Publish TheRock Docker image / build-and-push-image (push) Canceled after 0s
Details
Publish no_rocm_image_ubi10 image / publish_no_rocm_image_ubi10 (push) Canceled after 0s
Details
Multi-Arch CI / Windows::${{ fromJSON(needs.setup.outputs.windows_build_config || '{}').build_variant_label || 'skip' }} (push) Canceled after 0s
Details
Publish TheRock Docker image / build-and-push-image (push) Canceled after 0s
Details
Multi-Arch CI / Manifest Diff (push) Canceled after 0s
Details
TheRock Manifest Diff Report / Generate Manifest Diff Report (push) Canceled after 0s
Details
Multi-Arch CI / CI Summary (push) Canceled after 0s
Details
Publish no_rocm_image_ubuntu24_04 images / publish_no_rocm_image_ubuntu24_04 (push) Canceled after 0s
Details
Publish no_rocm_image_ubuntu24_04_ocl_rt images / publish_no_rocm_image_ubuntu24_04_ocl_rt (push) Canceled after 0s
Details
Publish TheRock Docker image / build-and-push-image (push) Canceled after 0s
Details
Publish TheRock Docker image / build-and-push-image (push) Canceled after 0s
Details
Publish no_rocm_image_ubuntu24_04 images / publish_no_rocm_image_ubuntu24_04_rocgdb (push) Canceled after 0s
Details
Publish no_rocm_image_ubuntu24_04_rocgdb images / publish_no_rocm_image_ubuntu24_04_rocgdb (push) Canceled after 0s
Details
Publish no_rocm_image_ubuntu24_04 images / publish_no_rocm_image_ubuntu24_04_ocl_rt (push) Canceled after 0s
Details
Publish TheRock Docker image / build-and-push-image (push) Canceled after 0s
Details
Unit Tests / Unit Tests :: ubuntu-24.04 (push) Canceled after 0s
Details
Unit Tests / Unit Tests :: windows-2022 (push) Canceled after 0s
Details
Publish no_rocm_image_ubuntu24_04 images / publish_no_rocm_image_ubuntu24_04_media (push) Canceled after 0s
Details
Unit Tests / Unit Tests Summary (push) Canceled after 0s
Details
Publish no_rocm_image_ubuntu24_04 images / publish_no_rocm_image_ubuntu24_04_openmpi (push) Canceled after 0s
Details
Flatten subprojects into a single base monorepo
2026-09-02 16:34:47 -07:00

146 lines
5.1 KiB
LLVM
Raw Blame History

; NOTE: Assertions have been autogenerated by utils/update_test_checks.py UTC_ARGS: --version 6
; RUN: opt < %s -S -passes=instcombine | FileCheck %s
; ctpop(~i & (i - 1)) -> bitwidth - cttz(i, false)
define i8 @ctlz_to_sub_bw_cttz(i8 %a0) {
; CHECK-LABEL: define i8 @ctlz_to_sub_bw_cttz(
; CHECK-SAME: i8 [[A0:%.*]]) {
; CHECK-NEXT: [[TMP1:%.*]] = call range(i8 0, 9) i8 @llvm.cttz.i8(i8 [[A0]], i1 false)
; CHECK-NEXT: [[CLZ:%.*]] = sub nuw nsw i8 8, [[TMP1]]
; CHECK-NEXT: ret i8 [[CLZ]]
;
%dec = add i8 %a0, -1
%not = xor i8 %a0, -1
%and = and i8 %dec, %not
%clz = tail call i8 @llvm.ctlz.i8(i8 %and, i1 false)
ret i8 %clz
}
define i8 @ctlz_to_sub_bw_cttz_poison(i8 %a0) {
; CHECK-LABEL: define i8 @ctlz_to_sub_bw_cttz_poison(
; CHECK-SAME: i8 [[A0:%.*]]) {
; CHECK-NEXT: [[TMP1:%.*]] = call range(i8 0, 9) i8 @llvm.cttz.i8(i8 [[A0]], i1 false)
; CHECK-NEXT: [[CLZ:%.*]] = sub nuw nsw i8 8, [[TMP1]]
; CHECK-NEXT: ret i8 [[CLZ]]
;
%dec = add i8 %a0, -1
%not = xor i8 %a0, -1
%and = and i8 %dec, %not
%clz = tail call i8 @llvm.ctlz.i8(i8 %and, i1 true)
ret i8 %clz
}
define i8 @ctlz_to_sub_bw_cttz_different_add(i8 %a0) {
; CHECK-LABEL: define i8 @ctlz_to_sub_bw_cttz_different_add(
; CHECK-SAME: i8 [[A0:%.*]]) {
; CHECK-NEXT: [[DEC:%.*]] = add i8 [[A0]], 1
; CHECK-NEXT: [[NOT:%.*]] = xor i8 [[A0]], -1
; CHECK-NEXT: [[AND:%.*]] = and i8 [[DEC]], [[NOT]]
; CHECK-NEXT: [[CLZ:%.*]] = tail call range(i8 0, 9) i8 @llvm.ctlz.i8(i8 [[AND]], i1 false)
; CHECK-NEXT: ret i8 [[CLZ]]
;
%dec = add i8 %a0, 1
%not = xor i8 %a0, -1
%and = and i8 %dec, %not
%clz = tail call i8 @llvm.ctlz.i8(i8 %and, i1 false)
ret i8 %clz
}
define i8 @ctlz_to_sub_bw_cttz_different_xor(i8 %a0) {
; CHECK-LABEL: define i8 @ctlz_to_sub_bw_cttz_different_xor(
; CHECK-SAME: i8 [[A0:%.*]]) {
; CHECK-NEXT: [[DEC:%.*]] = add i8 [[A0]], -1
; CHECK-NEXT: [[NOT:%.*]] = xor i8 [[A0]], 1
; CHECK-NEXT: [[AND:%.*]] = and i8 [[DEC]], [[NOT]]
; CHECK-NEXT: [[CLZ:%.*]] = tail call range(i8 0, 9) i8 @llvm.ctlz.i8(i8 [[AND]], i1 false)
; CHECK-NEXT: ret i8 [[CLZ]]
;
%dec = add i8 %a0, -1
%not = xor i8 %a0, 1
%and = and i8 %dec, %not
%clz = tail call i8 @llvm.ctlz.i8(i8 %and, i1 false)
ret i8 %clz
}
declare void @use(i8)
define i8 @ctlz_to_sub_bw_cttz_multi_use_dec(i8 %a0) {
; CHECK-LABEL: define i8 @ctlz_to_sub_bw_cttz_multi_use_dec(
; CHECK-SAME: i8 [[A0:%.*]]) {
; CHECK-NEXT: [[DEC:%.*]] = add i8 [[A0]], -1
; CHECK-NEXT: call void @use(i8 [[DEC]])
; CHECK-NEXT: [[TMP1:%.*]] = call range(i8 0, 9) i8 @llvm.cttz.i8(i8 [[A0]], i1 false)
; CHECK-NEXT: [[CLZ:%.*]] = sub nuw nsw i8 8, [[TMP1]]
; CHECK-NEXT: ret i8 [[CLZ]]
;
%dec = add i8 %a0, -1
call void @use(i8 %dec)
%not = xor i8 %a0, -1
%and = and i8 %dec, %not
%clz = tail call i8 @llvm.ctlz.i8(i8 %and, i1 false)
ret i8 %clz
}
define i8 @ctlz_to_sub_bw_cttz_multi_use_not(i8 %a0) {
; CHECK-LABEL: define i8 @ctlz_to_sub_bw_cttz_multi_use_not(
; CHECK-SAME: i8 [[A0:%.*]]) {
; CHECK-NEXT: [[NOT:%.*]] = xor i8 [[A0]], -1
; CHECK-NEXT: call void @use(i8 [[NOT]])
; CHECK-NEXT: [[TMP1:%.*]] = call range(i8 0, 9) i8 @llvm.cttz.i8(i8 [[A0]], i1 false)
; CHECK-NEXT: [[CLZ:%.*]] = sub nuw nsw i8 8, [[TMP1]]
; CHECK-NEXT: ret i8 [[CLZ]]
;
%dec = add i8 %a0, -1
%not = xor i8 %a0, -1
call void @use(i8 %not)
%and = and i8 %dec, %not
%clz = tail call i8 @llvm.ctlz.i8(i8 %and, i1 false)
ret i8 %clz
}
define i8 @ctlz_to_sub_bw_cttz_multi_use_and(i8 %a0) {
; CHECK-LABEL: define i8 @ctlz_to_sub_bw_cttz_multi_use_and(
; CHECK-SAME: i8 [[A0:%.*]]) {
; CHECK-NEXT: [[DEC:%.*]] = add i8 [[A0]], -1
; CHECK-NEXT: [[NOT:%.*]] = xor i8 [[A0]], -1
; CHECK-NEXT: [[AND:%.*]] = and i8 [[DEC]], [[NOT]]
; CHECK-NEXT: call void @use(i8 [[AND]])
; CHECK-NEXT: [[CLZ:%.*]] = tail call range(i8 0, 9) i8 @llvm.ctlz.i8(i8 [[AND]], i1 false)
; CHECK-NEXT: ret i8 [[CLZ]]
;
%dec = add i8 %a0, -1
%not = xor i8 %a0, -1
%and = and i8 %dec, %not
call void @use(i8 %and)
%clz = tail call i8 @llvm.ctlz.i8(i8 %and, i1 false)
ret i8 %clz
}
define i8 @ctlz_to_sub_bw_cttz_commute_and(i8 %a0) {
; CHECK-LABEL: define i8 @ctlz_to_sub_bw_cttz_commute_and(
; CHECK-SAME: i8 [[A0:%.*]]) {
; CHECK-NEXT: [[TMP1:%.*]] = call range(i8 0, 9) i8 @llvm.cttz.i8(i8 [[A0]], i1 false)
; CHECK-NEXT: [[CLZ:%.*]] = sub nuw nsw i8 8, [[TMP1]]
; CHECK-NEXT: ret i8 [[CLZ]]
;
%dec = add i8 %a0, -1
%not = xor i8 %a0, -1
%and = and i8 %not, %dec
%clz = tail call i8 @llvm.ctlz.i8(i8 %and, i1 false)
ret i8 %clz
}
define <2 x i8> @ctlz_to_sub_bw_cttz_vec_splat(<2 x i8> %a0) {
; CHECK-LABEL: define <2 x i8> @ctlz_to_sub_bw_cttz_vec_splat(
; CHECK-SAME: <2 x i8> [[A0:%.*]]) {
; CHECK-NEXT: [[TMP1:%.*]] = call range(i8 0, 9) <2 x i8> @llvm.cttz.v2i8(<2 x i8> [[A0]], i1 false)
; CHECK-NEXT: [[CLZ:%.*]] = sub nuw nsw <2 x i8> splat (i8 8), [[TMP1]]
; CHECK-NEXT: ret <2 x i8> [[CLZ]]
;
%dec = add <2 x i8> %a0, <i8 -1, i8 -1>
%not = xor <2 x i8> %a0, <i8 -1, i8 -1>
%and = and <2 x i8> %dec, %not
%clz = tail call <2 x i8>@llvm.ctlz.v2i8(<2 x i8> %and, i1 false)
ret <2 x i8> %clz
}
Reference in new issue View Git Blame Copy Permalink