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Differential D144609

[InstCombine] Add tests for transforming `(icmp (or X, Y), X)`; NFC
ClosedPublic

Authored by goldstein.w.n on Feb 22 2023, 5:20 PM.

Details

Reviewers
nikic
spatel
majnemer
Commits
rGbce55fbb9bc7: [InstCombine] Add tests for transforming `(icmp (or X, Y), X)`; NFC

Diff Detail

Event Timeline

goldstein.w.n created this revision.Feb 22 2023, 5:20 PM
Herald added a project: Restricted Project. · View Herald TranscriptFeb 22 2023, 5:20 PM
goldstein.w.n requested review of this revision.Feb 22 2023, 5:20 PM
Herald added a project: Restricted Project. · View Herald TranscriptFeb 22 2023, 5:20 PM
Herald added a subscriber: llvm-commits. · View Herald Transcript
goldstein.w.n added a parent revision: D144608: [InstCombine] Add transforms for `(icmp {u|s}ge/le (xor X, Y), X)`.Feb 22 2023, 5:23 PM
goldstein.w.n added reviewers: nikic, spatel, majnemer.
Herald added a subscriber: StephenFan. · View Herald TranscriptFeb 22 2023, 5:23 PM
goldstein.w.n added a child revision: D144610: [InstCombine] Add transforms for `(icmp upred (or X, Y), X)`.Feb 22 2023, 5:23 PM
Harbormaster completed remote builds in B215388: Diff 499679.Feb 22 2023, 7:16 PM
goldstein.w.n updated this revision to Diff 499936.Feb 23 2023, 11:46 AM

Rebase

Harbormaster completed remote builds in B215575: Diff 499936.Feb 23 2023, 1:08 PM
goldstein.w.n updated this revision to Diff 502285.Mar 3 2023, 3:55 PM

Rebase

goldstein.w.n added a parent revision: D145280: [InstCombine] Add transforms for `(icmp (xor X, Y), X)`.Mar 3 2023, 3:56 PM
goldstein.w.n removed a parent revision: D144608: [InstCombine] Add transforms for `(icmp {u|s}ge/le (xor X, Y), X)`.
goldstein.w.n updated this revision to Diff 502300.Mar 3 2023, 4:07 PM

Rebase

Harbormaster completed remote builds in B217308: Diff 502300.Mar 3 2023, 6:05 PM
goldstein.w.n updated this revision to Diff 502461.Mar 5 2023, 12:43 PM

Rebase

Harbormaster completed remote builds in B217443: Diff 502461.Mar 5 2023, 1:31 PM
goldstein.w.n updated this revision to Diff 502729.Mar 6 2023, 10:53 AM

Rebase

goldstein.w.n updated this revision to Diff 502799.Mar 6 2023, 2:15 PM

Rebase

Harbormaster completed remote builds in B217701: Diff 502799.Mar 6 2023, 6:54 PM
goldstein.w.n removed a parent revision: D145280: [InstCombine] Add transforms for `(icmp (xor X, Y), X)`.May 28 2023, 2:45 PM
goldstein.w.n added a parent revision: D145280: [InstCombine] Add transforms for `(icmp (xor X, Y), X)`.
goldstein.w.n removed a child revision: D144610: [InstCombine] Add transforms for `(icmp upred (or X, Y), X)`.
goldstein.w.n added a child revision: D144610: [InstCombine] Add transforms for `(icmp upred (or X, Y), X)`.May 28 2023, 2:47 PM
goldstein.w.n updated this revision to Diff 526369.May 28 2023, 9:11 PM

A X & ~Y == 0 transform

Harbormaster completed remote builds in B235099: Diff 526369.May 28 2023, 10:26 PM
goldstein.w.n removed a parent revision: D145280: [InstCombine] Add transforms for `(icmp (xor X, Y), X)`.Aug 12 2023, 2:48 PM
goldstein.w.n updated this revision to Diff 549660.Aug 12 2023, 2:58 PM

Add in tests for bugfix

Harbormaster completed remote builds in B252152: Diff 549660.Aug 12 2023, 8:03 PM
goldstein.w.n updated this revision to Diff 549727.Aug 13 2023, 11:00 AM

Add tests for nikics fold

Harbormaster completed remote builds in B252209: Diff 549727.Aug 13 2023, 2:00 PM
goldstein.w.n updated this revision to Diff 549968.Aug 14 2023, 8:45 AM

Rebase

Harbormaster completed remote builds in B252380: Diff 549968.Aug 14 2023, 1:09 PM
This revision was not accepted when it landed; it landed in state Needs Review.Aug 15 2023, 11:59 PM
This revision was landed with ongoing or failed builds.
Closed by commit rGbce55fbb9bc7: [InstCombine] Add tests for transforming `(icmp (or X, Y), X)`; NFC (authored by goldstein.w.n). · Explain Why
This revision was automatically updated to reflect the committed changes.
goldstein.w.n added a commit: rGbce55fbb9bc7: [InstCombine] Add tests for transforming `(icmp (or X, Y), X)`; NFC.

Revision Contents

PathSize
llvm/
test/
Transforms/
InstCombine/
256 lines

Diff 526369

llvm/test/Transforms/InstCombine/icmp-of-or-x.ll

  • This file was added.
; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
; RUN: opt < %s -passes=instcombine -S | FileCheck %s
declare void @llvm.assume(i1)
declare void @barrier()
declare void @use.v2i8(<2 x i8>)
define i1 @or_ugt(i8 %x, i8 %y) {
; CHECK-LABEL: @or_ugt(
; CHECK-NEXT: [[XN1:%.*]] = or i8 [[X:%.*]], [[Y:%.*]]
; CHECK-NEXT: [[R:%.*]] = icmp ugt i8 [[XN1]], [[X]]
; CHECK-NEXT: ret i1 [[R]]
;
%xn1 = or i8 %x, %y
%r = icmp ugt i8 %xn1, %x
ret i1 %r
}
define <2 x i1> @or_ule(<2 x i8> %x, <2 x i8> %y) {
; CHECK-LABEL: @or_ule(
; CHECK-NEXT: [[XN1:%.*]] = or <2 x i8> [[X:%.*]], [[Y:%.*]]
; CHECK-NEXT: [[R:%.*]] = icmp ule <2 x i8> [[XN1]], [[X]]
; CHECK-NEXT: ret <2 x i1> [[R]]
;
%xn1 = or <2 x i8> %x, %y
%r = icmp ule <2 x i8> %xn1, %x
ret <2 x i1> %r
}
define <2 x i1> @or_slt_pos(<2 x i8> %xx, <2 x i8> %yy, <2 x i8> %z) {
; CHECK-LABEL: @or_slt_pos(
; CHECK-NEXT: [[X:%.*]] = add <2 x i8> [[XX:%.*]], [[Z:%.*]]
; CHECK-NEXT: [[Y:%.*]] = and <2 x i8> [[YY:%.*]], <i8 127, i8 127>
; CHECK-NEXT: [[XN1:%.*]] = or <2 x i8> [[X]], [[Y]]
; CHECK-NEXT: [[R:%.*]] = icmp slt <2 x i8> [[X]], [[XN1]]
; CHECK-NEXT: ret <2 x i1> [[R]]
;
%x = add <2 x i8> %xx, %z
%y = and <2 x i8> %yy, <i8 127, i8 127>
%xn1 = or <2 x i8> %x, %y
%r = icmp slt <2 x i8> %x, %xn1
ret <2 x i1> %r
}
define i1 @or_sle_pos(i8 %x, i8 %y) {
; CHECK-LABEL: @or_sle_pos(
; CHECK-NEXT: [[NS:%.*]] = icmp sgt i8 [[Y:%.*]], -1
; CHECK-NEXT: call void @llvm.assume(i1 [[NS]])
; CHECK-NEXT: [[XN1:%.*]] = or i8 [[X:%.*]], [[Y]]
; CHECK-NEXT: [[R:%.*]] = icmp sle i8 [[XN1]], [[X]]
; CHECK-NEXT: ret i1 [[R]]
;
%ns = icmp sge i8 %y, 0
call void @llvm.assume(i1 %ns)
%xn1 = or i8 %x, %y
%r = icmp sle i8 %xn1, %x
ret i1 %r
}
define i1 @or_sle_fail_maybe_neg(i8 %x, i8 %y) {
; CHECK-LABEL: @or_sle_fail_maybe_neg(
; CHECK-NEXT: [[XN1:%.*]] = or i8 [[X:%.*]], [[Y:%.*]]
; CHECK-NEXT: [[R:%.*]] = icmp sle i8 [[XN1]], [[X]]
; CHECK-NEXT: ret i1 [[R]]
;
%xn1 = or i8 %x, %y
%r = icmp sle i8 %xn1, %x
ret i1 %r
}
define i1 @or_eq_noundef(i8 %x, i8 noundef %y) {
; CHECK-LABEL: @or_eq_noundef(
; CHECK-NEXT: [[XN1:%.*]] = or i8 [[X:%.*]], [[Y:%.*]]
; CHECK-NEXT: [[R:%.*]] = icmp eq i8 [[XN1]], [[X]]
; CHECK-NEXT: ret i1 [[R]]
;
%xn1 = or i8 %x, %y
%r = icmp eq i8 %xn1, %x
ret i1 %r
}
define i1 @or_eq_notY(i8 %x, i8 %y) {
; CHECK-LABEL: @or_eq_notY(
; CHECK-NEXT: [[NY:%.*]] = xor i8 [[Y:%.*]], -1
; CHECK-NEXT: [[OR:%.*]] = or i8 [[NY]], [[X:%.*]]
; CHECK-NEXT: [[CMP:%.*]] = icmp eq i8 [[OR]], [[NY]]
; CHECK-NEXT: ret i1 [[CMP]]
;
%ny = xor i8 %y, -1
%or = or i8 %x, %ny
%cmp = icmp eq i8 %or, %ny
ret i1 %cmp
}
define i1 @or_eq_notY_fail_eq_X(i8 %x, i8 %y) {
; CHECK-LABEL: @or_eq_notY_fail_eq_X(
; CHECK-NEXT: [[NY:%.*]] = xor i8 [[Y:%.*]], -1
; CHECK-NEXT: [[OR:%.*]] = or i8 [[NY]], [[X:%.*]]
; CHECK-NEXT: [[CMP:%.*]] = icmp eq i8 [[OR]], [[X]]
; CHECK-NEXT: ret i1 [[CMP]]
;
%ny = xor i8 %y, -1
%or = or i8 %x, %ny
%cmp = icmp eq i8 %or, %x
ret i1 %cmp
}
define <2 x i1> @or_ne_vecC(<2 x i8> %x) {
; CHECK-LABEL: @or_ne_vecC(
; CHECK-NEXT: [[OR:%.*]] = or <2 x i8> [[X:%.*]], <i8 9, i8 42>
; CHECK-NEXT: [[CMP:%.*]] = icmp ne <2 x i8> [[OR]], <i8 9, i8 42>
; CHECK-NEXT: ret <2 x i1> [[CMP]]
;
%or = or <2 x i8> %x, <i8 9, i8 42>
%cmp = icmp ne <2 x i8> %or, <i8 9, i8 42>
ret <2 x i1> %cmp
}
define i1 @or_eq_fail_maybe_undef(i8 %x, i8 %y) {
; CHECK-LABEL: @or_eq_fail_maybe_undef(
; CHECK-NEXT: [[XN1:%.*]] = or i8 [[X:%.*]], [[Y:%.*]]
; CHECK-NEXT: [[R:%.*]] = icmp eq i8 [[XN1]], [[X]]
; CHECK-NEXT: ret i1 [[R]]
;
%xn1 = or i8 %x, %y
%r = icmp eq i8 %xn1, %x
ret i1 %r
}
define <2 x i1> @or_ne_noundef(<2 x i8> %x, <2 x i8> noundef %y) {
; CHECK-LABEL: @or_ne_noundef(
; CHECK-NEXT: [[XN1:%.*]] = or <2 x i8> [[X:%.*]], [[Y:%.*]]
; CHECK-NEXT: [[R:%.*]] = icmp ne <2 x i8> [[XN1]], [[X]]
; CHECK-NEXT: ret <2 x i1> [[R]]
;
%xn1 = or <2 x i8> %x, %y
%r = icmp ne <2 x i8> %xn1, %x
ret <2 x i1> %r
}
define <2 x i1> @or_ne_noundef_fail_reuse(<2 x i8> %x, <2 x i8> noundef %y) {
; CHECK-LABEL: @or_ne_noundef_fail_reuse(
; CHECK-NEXT: [[XN1:%.*]] = or <2 x i8> [[X:%.*]], [[Y:%.*]]
; CHECK-NEXT: [[R:%.*]] = icmp ne <2 x i8> [[XN1]], [[X]]
; CHECK-NEXT: call void @use.v2i8(<2 x i8> [[XN1]])
; CHECK-NEXT: ret <2 x i1> [[R]]
;
%xn1 = or <2 x i8> %x, %y
%r = icmp ne <2 x i8> %xn1, %x
call void @use.v2i8(<2 x i8> %xn1)
ret <2 x i1> %r
}
define i1 @or_slt_intmin(i8 %x) {
; CHECK-LABEL: @or_slt_intmin(
; CHECK-NEXT: [[XN1:%.*]] = or i8 [[X:%.*]], -128
; CHECK-NEXT: [[R:%.*]] = icmp slt i8 [[XN1]], [[X]]
; CHECK-NEXT: ret i1 [[R]]
;
%xn1 = or i8 %x, 128
%r = icmp slt i8 %xn1, %x
ret i1 %r
}
define <2 x i1> @or_slt_intmin_2(<2 x i8> %xx, <2 x i8> %z) {
; CHECK-LABEL: @or_slt_intmin_2(
; CHECK-NEXT: [[X:%.*]] = add <2 x i8> [[XX:%.*]], [[Z:%.*]]
; CHECK-NEXT: [[XN1:%.*]] = or <2 x i8> [[X]], <i8 -128, i8 -128>
; CHECK-NEXT: [[R:%.*]] = icmp slt <2 x i8> [[X]], [[XN1]]
; CHECK-NEXT: ret <2 x i1> [[R]]
;
%x = add <2 x i8> %xx, %z
%xn1 = or <2 x i8> %x, <i8 128, i8 128>
%r = icmp slt <2 x i8> %x, %xn1
ret <2 x i1> %r
}
define i1 @or_sle_intmin_indirect_2(i8 %xx, i8 %C, i8 %z) {
; CHECK-LABEL: @or_sle_intmin_indirect_2(
; CHECK-NEXT: [[CMP:%.*]] = icmp eq i8 [[C:%.*]], -128
; CHECK-NEXT: br i1 [[CMP]], label [[NEG:%.*]], label [[POS:%.*]]
; CHECK: neg:
; CHECK-NEXT: [[NC:%.*]] = sub i8 0, [[C]]
; CHECK-NEXT: [[CP2:%.*]] = and i8 [[NC]], [[C]]
; CHECK-NEXT: [[X:%.*]] = add i8 [[XX:%.*]], [[Z:%.*]]
; CHECK-NEXT: [[XN1:%.*]] = or i8 [[X]], [[CP2]]
; CHECK-NEXT: [[R:%.*]] = icmp sle i8 [[X]], [[XN1]]
; CHECK-NEXT: ret i1 [[R]]
; CHECK: pos:
; CHECK-NEXT: call void @barrier()
; CHECK-NEXT: ret i1 false
;
%x = add i8 %xx, %z
%NC = sub i8 0, %C
%CP2 = and i8 %C, %NC
%cmp = icmp slt i8 %CP2, 0
br i1 %cmp, label %neg, label %pos
neg:
%xn1 = or i8 %x, %CP2
%r = icmp sle i8 %x, %xn1
ret i1 %r
pos:
call void @barrier()
ret i1 0
}
define i1 @or_sge_intmin(i8 %x) {
; CHECK-LABEL: @or_sge_intmin(
; CHECK-NEXT: [[XN1:%.*]] = or i8 [[X:%.*]], -128
; CHECK-NEXT: [[R:%.*]] = icmp sge i8 [[XN1]], [[X]]
; CHECK-NEXT: ret i1 [[R]]
;
%xn1 = or i8 %x, 128
%r = icmp sge i8 %xn1, %x
ret i1 %r
}
define i1 @or_sgt_intmin_indirect(i8 %x, i8 %C) {
; CHECK-LABEL: @or_sgt_intmin_indirect(
; CHECK-NEXT: [[C_NOT:%.*]] = icmp eq i8 [[C:%.*]], -128
; CHECK-NEXT: br i1 [[C_NOT]], label [[NEG:%.*]], label [[POS:%.*]]
; CHECK: neg:
; CHECK-NEXT: [[NC:%.*]] = sub i8 0, [[C]]
; CHECK-NEXT: [[CP2:%.*]] = and i8 [[NC]], [[C]]
; CHECK-NEXT: [[XN1:%.*]] = or i8 [[CP2]], [[X:%.*]]
; CHECK-NEXT: [[R:%.*]] = icmp sgt i8 [[XN1]], [[X]]
; CHECK-NEXT: ret i1 [[R]]
; CHECK: pos:
; CHECK-NEXT: call void @barrier()
; CHECK-NEXT: ret i1 false
;
%NC = sub i8 0, %C
%CP2 = and i8 %C, %NC
%c = icmp sge i8 %CP2, 0
br i1 %c, label %pos, label %neg
neg:
%xn1 = or i8 %x, %CP2
%r = icmp sgt i8 %xn1, %x
ret i1 %r
pos:
call void @barrier()
ret i1 0
}
define <2 x i1> @or_sgt_intmin_2(<2 x i8> %xx, <2 x i8> %z) {
; CHECK-LABEL: @or_sgt_intmin_2(
; CHECK-NEXT: [[X:%.*]] = add <2 x i8> [[XX:%.*]], [[Z:%.*]]
; CHECK-NEXT: [[XN1:%.*]] = or <2 x i8> [[X]], <i8 -128, i8 -128>
; CHECK-NEXT: [[R:%.*]] = icmp sgt <2 x i8> [[X]], [[XN1]]
; CHECK-NEXT: ret <2 x i1> [[R]]
;
%x = add <2 x i8> %xx, %z
%xn1 = or <2 x i8> %x, <i8 128, i8 128>
%r = icmp sgt <2 x i8> %x, %xn1
ret <2 x i1> %r
}