forked from OSchip/llvm-project
[NFC][InstCombine] Overhaul 'unsigned add overflow' tests, ensure that all 3 patterns have full test coverage
llvm-svn: 371108
This commit is contained in:
Roman Lebedev
parent
0fde412140
commit
071ce66729
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@ -0,0 +1,236 @@
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; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
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; RUN: opt %s -instcombine -S | FileCheck %s
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; Should fold
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; (%x + %y) u>= %x
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; or
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; (%x + %y) u>= %y
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; to
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; @llvm.uadd.with.overflow(%x, %y) + extractvalue + not
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;
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; All tests here have extra uses, to ensure that the pattern isn't perturbed.
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declare void @use8(i8)
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declare void @use2x8(<2 x i8>)
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define i1 @t0_basic(i8 %x, i8 %y) {
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; CHECK-LABEL: @t0_basic(
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; CHECK-NEXT: [[T0:%.*]] = add i8 [[X:%.*]], [[Y:%.*]]
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; CHECK-NEXT: call void @use8(i8 [[T0]])
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; CHECK-NEXT: [[R:%.*]] = icmp uge i8 [[T0]], [[Y]]
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; CHECK-NEXT: ret i1 [[R]]
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;
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%t0 = add i8 %x, %y
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call void @use8(i8 %t0)
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%r = icmp uge i8 %t0, %y
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ret i1 %r
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}
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define <2 x i1> @t1_vec(<2 x i8> %x, <2 x i8> %y) {
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; CHECK-LABEL: @t1_vec(
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; CHECK-NEXT: [[T0:%.*]] = add <2 x i8> [[X:%.*]], [[Y:%.*]]
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; CHECK-NEXT: call void @use2x8(<2 x i8> [[T0]])
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; CHECK-NEXT: [[R:%.*]] = icmp uge <2 x i8> [[T0]], [[Y]]
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; CHECK-NEXT: ret <2 x i1> [[R]]
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;
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%t0 = add <2 x i8> %x, %y
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call void @use2x8(<2 x i8> %t0)
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%r = icmp uge <2 x i8> %t0, %y
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ret <2 x i1> %r
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}
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; Commutativity
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define i1 @t2_symmetry(i8 %x, i8 %y) {
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; CHECK-LABEL: @t2_symmetry(
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; CHECK-NEXT: [[T0:%.*]] = add i8 [[X:%.*]], [[Y:%.*]]
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; CHECK-NEXT: call void @use8(i8 [[T0]])
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; CHECK-NEXT: [[R:%.*]] = icmp uge i8 [[T0]], [[X]]
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; CHECK-NEXT: ret i1 [[R]]
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;
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%t0 = add i8 %x, %y
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call void @use8(i8 %t0)
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%r = icmp uge i8 %t0, %x ; can check against either of `add` arguments
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ret i1 %r
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}
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declare i8 @gen8()
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define i1 @t3_commutative(i8 %x) {
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; CHECK-LABEL: @t3_commutative(
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; CHECK-NEXT: [[Y:%.*]] = call i8 @gen8()
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; CHECK-NEXT: [[T0:%.*]] = add i8 [[Y]], [[X:%.*]]
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; CHECK-NEXT: call void @use8(i8 [[T0]])
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; CHECK-NEXT: [[R:%.*]] = icmp uge i8 [[T0]], [[Y]]
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; CHECK-NEXT: ret i1 [[R]]
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;
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%y = call i8 @gen8()
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%t0 = add i8 %y, %x ; swapped
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call void @use8(i8 %t0)
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%r = icmp uge i8 %t0, %y
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ret i1 %r
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}
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define i1 @t4_commutative() {
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; CHECK-LABEL: @t4_commutative(
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; CHECK-NEXT: [[X:%.*]] = call i8 @gen8()
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; CHECK-NEXT: [[Y:%.*]] = call i8 @gen8()
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; CHECK-NEXT: [[T0:%.*]] = add i8 [[X]], [[Y]]
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; CHECK-NEXT: call void @use8(i8 [[T0]])
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; CHECK-NEXT: [[R:%.*]] = icmp ule i8 [[Y]], [[T0]]
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; CHECK-NEXT: ret i1 [[R]]
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;
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%x = call i8 @gen8()
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%y = call i8 @gen8()
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%t0 = add i8 %x, %y
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call void @use8(i8 %t0)
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%r = icmp ule i8 %y, %t0 ; swapped
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ret i1 %r
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}
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define i1 @t5_commutative(i8 %x) {
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; CHECK-LABEL: @t5_commutative(
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; CHECK-NEXT: [[Y:%.*]] = call i8 @gen8()
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; CHECK-NEXT: [[T0:%.*]] = add i8 [[Y]], [[X:%.*]]
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; CHECK-NEXT: call void @use8(i8 [[T0]])
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; CHECK-NEXT: [[R:%.*]] = icmp ule i8 [[Y]], [[T0]]
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; CHECK-NEXT: ret i1 [[R]]
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;
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%y = call i8 @gen8()
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%t0 = add i8 %y, %x ; swapped
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call void @use8(i8 %t0)
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%r = icmp ule i8 %y, %t0 ; swapped
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ret i1 %r
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}
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; Extra-use tests
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define i1 @t6_no_extrause(i8 %x, i8 %y) {
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; CHECK-LABEL: @t6_no_extrause(
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; CHECK-NEXT: [[TMP1:%.*]] = xor i8 [[Y:%.*]], -1
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; CHECK-NEXT: [[R:%.*]] = icmp uge i8 [[TMP1]], [[X:%.*]]
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; CHECK-NEXT: ret i1 [[R]]
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;
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%t0 = add i8 %x, %y
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%r = icmp uge i8 %t0, %y
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ret i1 %r
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}
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; Negative tests
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define i1 @n7_different_y(i8 %x, i8 %y0, i8 %y1) {
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; CHECK-LABEL: @n7_different_y(
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; CHECK-NEXT: [[T0:%.*]] = add i8 [[X:%.*]], [[Y0:%.*]]
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; CHECK-NEXT: call void @use8(i8 [[T0]])
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; CHECK-NEXT: [[R:%.*]] = icmp uge i8 [[T0]], [[Y1:%.*]]
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; CHECK-NEXT: ret i1 [[R]]
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;
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%t0 = add i8 %x, %y0
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call void @use8(i8 %t0)
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%r = icmp uge i8 %t0, %y1
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ret i1 %r
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}
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define i1 @n8_wrong_pred0(i8 %x, i8 %y) {
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; CHECK-LABEL: @n8_wrong_pred0(
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; CHECK-NEXT: [[T0:%.*]] = add i8 [[X:%.*]], [[Y:%.*]]
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; CHECK-NEXT: call void @use8(i8 [[T0]])
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; CHECK-NEXT: [[R:%.*]] = icmp ule i8 [[T0]], [[Y]]
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; CHECK-NEXT: ret i1 [[R]]
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;
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%t0 = add i8 %x, %y
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call void @use8(i8 %t0)
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%r = icmp ule i8 %t0, %y
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ret i1 %r
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}
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define i1 @n9_wrong_pred1(i8 %x, i8 %y) {
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; CHECK-LABEL: @n9_wrong_pred1(
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; CHECK-NEXT: [[T0:%.*]] = add i8 [[X:%.*]], [[Y:%.*]]
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; CHECK-NEXT: call void @use8(i8 [[T0]])
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; CHECK-NEXT: [[R:%.*]] = icmp ugt i8 [[T0]], [[Y]]
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; CHECK-NEXT: ret i1 [[R]]
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;
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%t0 = add i8 %x, %y
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call void @use8(i8 %t0)
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%r = icmp ugt i8 %t0, %y
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ret i1 %r
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}
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define i1 @n10_wrong_pred2(i8 %x, i8 %y) {
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; CHECK-LABEL: @n10_wrong_pred2(
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; CHECK-NEXT: [[T0:%.*]] = add i8 [[X:%.*]], [[Y:%.*]]
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; CHECK-NEXT: call void @use8(i8 [[T0]])
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; CHECK-NEXT: [[R:%.*]] = icmp eq i8 [[X]], 0
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; CHECK-NEXT: ret i1 [[R]]
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;
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%t0 = add i8 %x, %y
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call void @use8(i8 %t0)
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%r = icmp eq i8 %t0, %y
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ret i1 %r
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}
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define i1 @n11_wrong_pred3(i8 %x, i8 %y) {
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; CHECK-LABEL: @n11_wrong_pred3(
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; CHECK-NEXT: [[T0:%.*]] = add i8 [[X:%.*]], [[Y:%.*]]
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; CHECK-NEXT: call void @use8(i8 [[T0]])
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; CHECK-NEXT: [[R:%.*]] = icmp ne i8 [[X]], 0
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; CHECK-NEXT: ret i1 [[R]]
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;
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%t0 = add i8 %x, %y
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call void @use8(i8 %t0)
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%r = icmp ne i8 %t0, %y
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ret i1 %r
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}
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define i1 @n12_wrong_pred4(i8 %x, i8 %y) {
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; CHECK-LABEL: @n12_wrong_pred4(
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; CHECK-NEXT: [[T0:%.*]] = add i8 [[X:%.*]], [[Y:%.*]]
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; CHECK-NEXT: call void @use8(i8 [[T0]])
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; CHECK-NEXT: [[R:%.*]] = icmp slt i8 [[T0]], [[Y]]
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; CHECK-NEXT: ret i1 [[R]]
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;
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%t0 = add i8 %x, %y
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call void @use8(i8 %t0)
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%r = icmp slt i8 %t0, %y
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ret i1 %r
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}
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define i1 @n13_wrong_pred5(i8 %x, i8 %y) {
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; CHECK-LABEL: @n13_wrong_pred5(
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; CHECK-NEXT: [[T0:%.*]] = add i8 [[X:%.*]], [[Y:%.*]]
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; CHECK-NEXT: call void @use8(i8 [[T0]])
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; CHECK-NEXT: [[R:%.*]] = icmp sle i8 [[T0]], [[Y]]
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; CHECK-NEXT: ret i1 [[R]]
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;
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%t0 = add i8 %x, %y
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call void @use8(i8 %t0)
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%r = icmp sle i8 %t0, %y
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ret i1 %r
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}
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define i1 @n14_wrong_pred6(i8 %x, i8 %y) {
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; CHECK-LABEL: @n14_wrong_pred6(
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; CHECK-NEXT: [[T0:%.*]] = add i8 [[X:%.*]], [[Y:%.*]]
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; CHECK-NEXT: call void @use8(i8 [[T0]])
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; CHECK-NEXT: [[R:%.*]] = icmp sgt i8 [[T0]], [[Y]]
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; CHECK-NEXT: ret i1 [[R]]
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;
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%t0 = add i8 %x, %y
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call void @use8(i8 %t0)
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%r = icmp sgt i8 %t0, %y
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ret i1 %r
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}
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define i1 @n15_wrong_pred7(i8 %x, i8 %y) {
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; CHECK-LABEL: @n15_wrong_pred7(
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; CHECK-NEXT: [[T0:%.*]] = add i8 [[X:%.*]], [[Y:%.*]]
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; CHECK-NEXT: call void @use8(i8 [[T0]])
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; CHECK-NEXT: [[R:%.*]] = icmp sge i8 [[T0]], [[Y]]
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; CHECK-NEXT: ret i1 [[R]]
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;
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%t0 = add i8 %x, %y
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call void @use8(i8 %t0)
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%r = icmp sge i8 %t0, %y
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ret i1 %r
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}
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@ -0,0 +1,189 @@
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; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
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; RUN: opt %s -instcombine -S | FileCheck %s
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; Should fold
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; (%y ^ -1) u>= %x
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; to
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; @llvm.uadd.with.overflow(%x, %y) + extractvalue + not
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;
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; All tests here have extra uses, to ensure that the pattern isn't perturbed.
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declare void @use8(i8)
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declare void @use2x8(<2 x i8>)
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define i1 @t0_basic(i8 %x, i8 %y) {
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; CHECK-LABEL: @t0_basic(
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; CHECK-NEXT: [[T0:%.*]] = xor i8 [[Y:%.*]], -1
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; CHECK-NEXT: call void @use8(i8 [[T0]])
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; CHECK-NEXT: [[R:%.*]] = icmp uge i8 [[T0]], [[X:%.*]]
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; CHECK-NEXT: ret i1 [[R]]
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;
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%t0 = xor i8 %y, -1
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call void @use8(i8 %t0)
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%r = icmp uge i8 %t0, %x
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ret i1 %r
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}
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define <2 x i1> @t1_vec(<2 x i8> %x, <2 x i8> %y) {
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; CHECK-LABEL: @t1_vec(
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; CHECK-NEXT: [[T0:%.*]] = xor <2 x i8> [[Y:%.*]], <i8 -1, i8 -1>
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; CHECK-NEXT: call void @use2x8(<2 x i8> [[T0]])
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; CHECK-NEXT: [[R:%.*]] = icmp uge <2 x i8> [[T0]], [[X:%.*]]
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; CHECK-NEXT: ret <2 x i1> [[R]]
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;
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%t0 = xor <2 x i8> %y, <i8 -1, i8 -1>
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call void @use2x8(<2 x i8> %t0)
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%r = icmp uge <2 x i8> %t0, %x
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ret <2 x i1> %r
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}
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; Commutativity
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declare i8 @gen8()
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define i1 @t2_commutative(i8 %y) {
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; CHECK-LABEL: @t2_commutative(
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; CHECK-NEXT: [[T0:%.*]] = xor i8 [[Y:%.*]], -1
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; CHECK-NEXT: call void @use8(i8 [[T0]])
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; CHECK-NEXT: [[X:%.*]] = call i8 @gen8()
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; CHECK-NEXT: [[R:%.*]] = icmp ule i8 [[X]], [[T0]]
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; CHECK-NEXT: ret i1 [[R]]
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;
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%t0 = xor i8 %y, -1
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call void @use8(i8 %t0)
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%x = call i8 @gen8()
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%r = icmp ule i8 %x, %t0 ; swapped
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ret i1 %r
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}
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; Extra-use tests
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define i1 @t3_no_extrause(i8 %x, i8 %y) {
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; CHECK-LABEL: @t3_no_extrause(
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; CHECK-NEXT: [[T0:%.*]] = xor i8 [[Y:%.*]], -1
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; CHECK-NEXT: [[R:%.*]] = icmp uge i8 [[T0]], [[X:%.*]]
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; CHECK-NEXT: ret i1 [[R]]
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;
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%t0 = xor i8 %y, -1
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%r = icmp uge i8 %t0, %x
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ret i1 %r
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}
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; Negative tests
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define i1 @n4_wrong_pred0(i8 %x, i8 %y) {
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; CHECK-LABEL: @n4_wrong_pred0(
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; CHECK-NEXT: [[T0:%.*]] = xor i8 [[Y:%.*]], -1
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; CHECK-NEXT: call void @use8(i8 [[T0]])
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; CHECK-NEXT: [[R:%.*]] = icmp ule i8 [[T0]], [[X:%.*]]
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; CHECK-NEXT: ret i1 [[R]]
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;
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%t0 = xor i8 %y, -1
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call void @use8(i8 %t0)
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%r = icmp ule i8 %t0, %x
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ret i1 %r
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}
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define i1 @n5_wrong_pred1(i8 %x, i8 %y) {
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; CHECK-LABEL: @n5_wrong_pred1(
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; CHECK-NEXT: [[T0:%.*]] = xor i8 [[Y:%.*]], -1
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; CHECK-NEXT: call void @use8(i8 [[T0]])
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; CHECK-NEXT: [[R:%.*]] = icmp ugt i8 [[T0]], [[X:%.*]]
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; CHECK-NEXT: ret i1 [[R]]
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;
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%t0 = xor i8 %y, -1
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call void @use8(i8 %t0)
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%r = icmp ugt i8 %t0, %x
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ret i1 %r
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}
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define i1 @n6_wrong_pred2(i8 %x, i8 %y) {
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; CHECK-LABEL: @n6_wrong_pred2(
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; CHECK-NEXT: [[T0:%.*]] = xor i8 [[Y:%.*]], -1
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; CHECK-NEXT: call void @use8(i8 [[T0]])
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; CHECK-NEXT: [[R:%.*]] = icmp eq i8 [[T0]], [[X:%.*]]
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; CHECK-NEXT: ret i1 [[R]]
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;
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%t0 = xor i8 %y, -1
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call void @use8(i8 %t0)
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%r = icmp eq i8 %t0, %x
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ret i1 %r
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}
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define i1 @n7_wrong_pred3(i8 %x, i8 %y) {
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; CHECK-LABEL: @n7_wrong_pred3(
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; CHECK-NEXT: [[T0:%.*]] = xor i8 [[Y:%.*]], -1
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; CHECK-NEXT: call void @use8(i8 [[T0]])
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; CHECK-NEXT: [[R:%.*]] = icmp ne i8 [[T0]], [[X:%.*]]
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; CHECK-NEXT: ret i1 [[R]]
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;
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%t0 = xor i8 %y, -1
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call void @use8(i8 %t0)
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%r = icmp ne i8 %t0, %x
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ret i1 %r
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}
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define i1 @n8_wrong_pred4(i8 %x, i8 %y) {
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; CHECK-LABEL: @n8_wrong_pred4(
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; CHECK-NEXT: [[T0:%.*]] = xor i8 [[Y:%.*]], -1
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; CHECK-NEXT: call void @use8(i8 [[T0]])
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; CHECK-NEXT: [[R:%.*]] = icmp slt i8 [[T0]], [[X:%.*]]
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; CHECK-NEXT: ret i1 [[R]]
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;
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%t0 = xor i8 %y, -1
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call void @use8(i8 %t0)
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%r = icmp slt i8 %t0, %x
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ret i1 %r
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}
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define i1 @n9_wrong_pred5(i8 %x, i8 %y) {
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; CHECK-LABEL: @n9_wrong_pred5(
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; CHECK-NEXT: [[T0:%.*]] = xor i8 [[Y:%.*]], -1
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; CHECK-NEXT: call void @use8(i8 [[T0]])
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; CHECK-NEXT: [[R:%.*]] = icmp sle i8 [[T0]], [[X:%.*]]
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; CHECK-NEXT: ret i1 [[R]]
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;
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%t0 = xor i8 %y, -1
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call void @use8(i8 %t0)
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%r = icmp sle i8 %t0, %x
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ret i1 %r
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}
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define i1 @n10_wrong_pred6(i8 %x, i8 %y) {
|
||||
; CHECK-LABEL: @n10_wrong_pred6(
|
||||
; CHECK-NEXT: [[T0:%.*]] = xor i8 [[Y:%.*]], -1
|
||||
; CHECK-NEXT: call void @use8(i8 [[T0]])
|
||||
; CHECK-NEXT: [[R:%.*]] = icmp sgt i8 [[T0]], [[X:%.*]]
|
||||
; CHECK-NEXT: ret i1 [[R]]
|
||||
;
|
||||
%t0 = xor i8 %y, -1
|
||||
call void @use8(i8 %t0)
|
||||
%r = icmp sgt i8 %t0, %x
|
||||
ret i1 %r
|
||||
}
|
||||
|
||||
define i1 @n11_wrong_pred7(i8 %x, i8 %y) {
|
||||
; CHECK-LABEL: @n11_wrong_pred7(
|
||||
; CHECK-NEXT: [[T0:%.*]] = xor i8 [[Y:%.*]], -1
|
||||
; CHECK-NEXT: call void @use8(i8 [[T0]])
|
||||
; CHECK-NEXT: [[R:%.*]] = icmp sge i8 [[T0]], [[X:%.*]]
|
||||
; CHECK-NEXT: ret i1 [[R]]
|
||||
;
|
||||
%t0 = xor i8 %y, -1
|
||||
call void @use8(i8 %t0)
|
||||
%r = icmp sge i8 %t0, %x
|
||||
ret i1 %r
|
||||
}
|
||||
|
||||
define <2 x i1> @n12_vec_nonsplat(<2 x i8> %x, <2 x i8> %y) {
|
||||
; CHECK-LABEL: @n12_vec_nonsplat(
|
||||
; CHECK-NEXT: [[T0:%.*]] = xor <2 x i8> [[Y:%.*]], <i8 -1, i8 -2>
|
||||
; CHECK-NEXT: call void @use2x8(<2 x i8> [[T0]])
|
||||
; CHECK-NEXT: [[R:%.*]] = icmp uge <2 x i8> [[T0]], [[X:%.*]]
|
||||
; CHECK-NEXT: ret <2 x i1> [[R]]
|
||||
;
|
||||
%t0 = xor <2 x i8> %y, <i8 -1, i8 -2> ; must be -1.
|
||||
call void @use2x8(<2 x i8> %t0)
|
||||
%r = icmp uge <2 x i8> %t0, %x
|
||||
ret <2 x i1> %r
|
||||
}
|
||||
|
|
@ -1,12 +1,12 @@
|
|||
; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
|
||||
; RUN: opt %s -instcombine -S | FileCheck %s
|
||||
|
||||
; Fold
|
||||
; Should fold
|
||||
; (%x + %y) u>= %x
|
||||
; or
|
||||
; (%x + %y) u>= %y
|
||||
; to
|
||||
; @llvm.add.with.overflow(%x, %y) + extractvalue + not
|
||||
; @llvm.uadd.with.overflow(%x, %y) + extractvalue + not
|
||||
|
||||
define i1 @t0_basic(i8 %x, i8 %y) {
|
||||
; CHECK-LABEL: @t0_basic(
|
||||
|
|
@ -86,8 +86,8 @@ define i1 @t5_commutative(i8 %x) {
|
|||
|
||||
declare void @use8(i8)
|
||||
|
||||
define i1 @t6_extrause0(i8 %x, i8 %y) {
|
||||
; CHECK-LABEL: @t6_extrause0(
|
||||
define i1 @t6_extrause(i8 %x, i8 %y) {
|
||||
; CHECK-LABEL: @t6_extrause(
|
||||
; CHECK-NEXT: [[T0:%.*]] = add i8 [[X:%.*]], [[Y:%.*]]
|
||||
; CHECK-NEXT: call void @use8(i8 [[T0]])
|
||||
; CHECK-NEXT: [[R:%.*]] = icmp uge i8 [[T0]], [[Y]]
|
||||
|
|
|
|||
|
|
@ -0,0 +1,232 @@
|
|||
; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
|
||||
; RUN: opt %s -instcombine -S | FileCheck %s
|
||||
|
||||
; Should fold
|
||||
; (%x + %y) u< %x
|
||||
; or
|
||||
; (%x + %y) u< %y
|
||||
; to
|
||||
; @llvm.uadd.with.overflow(%x, %y) + extractvalue
|
||||
;
|
||||
; All tests here have extra uses, to ensure that the pattern isn't perturbed.
|
||||
|
||||
declare void @use8(i8)
|
||||
declare void @use2x8(<2 x i8>)
|
||||
|
||||
define i1 @t0_basic(i8 %x, i8 %y) {
|
||||
; CHECK-LABEL: @t0_basic(
|
||||
; CHECK-NEXT: [[T0:%.*]] = add i8 [[X:%.*]], [[Y:%.*]]
|
||||
; CHECK-NEXT: call void @use8(i8 [[T0]])
|
||||
; CHECK-NEXT: [[R:%.*]] = icmp ult i8 [[T0]], [[Y]]
|
||||
; CHECK-NEXT: ret i1 [[R]]
|
||||
;
|
||||
%t0 = add i8 %x, %y
|
||||
call void @use8(i8 %t0)
|
||||
%r = icmp ult i8 %t0, %y
|
||||
ret i1 %r
|
||||
}
|
||||
|
||||
define <2 x i1> @t1_vec(<2 x i8> %x, <2 x i8> %y) {
|
||||
; CHECK-LABEL: @t1_vec(
|
||||
; CHECK-NEXT: [[T0:%.*]] = add <2 x i8> [[X:%.*]], [[Y:%.*]]
|
||||
; CHECK-NEXT: call void @use2x8(<2 x i8> [[T0]])
|
||||
; CHECK-NEXT: [[R:%.*]] = icmp ult <2 x i8> [[T0]], [[Y]]
|
||||
; CHECK-NEXT: ret <2 x i1> [[R]]
|
||||
;
|
||||
%t0 = add <2 x i8> %x, %y
|
||||
call void @use2x8(<2 x i8> %t0)
|
||||
%r = icmp ult <2 x i8> %t0, %y
|
||||
ret <2 x i1> %r
|
||||
}
|
||||
|
||||
; Commutativity
|
||||
|
||||
define i1 @t2_symmetry(i8 %x, i8 %y) {
|
||||
; CHECK-LABEL: @t2_symmetry(
|
||||
; CHECK-NEXT: [[T0:%.*]] = add i8 [[X:%.*]], [[Y:%.*]]
|
||||
; CHECK-NEXT: call void @use8(i8 [[T0]])
|
||||
; CHECK-NEXT: [[R:%.*]] = icmp ult i8 [[T0]], [[X]]
|
||||
; CHECK-NEXT: ret i1 [[R]]
|
||||
;
|
||||
%t0 = add i8 %x, %y
|
||||
call void @use8(i8 %t0)
|
||||
%r = icmp ult i8 %t0, %x ; can check against either of `add` arguments
|
||||
ret i1 %r
|
||||
}
|
||||
|
||||
declare i8 @gen8()
|
||||
|
||||
define i1 @t3_commutative(i8 %x) {
|
||||
; CHECK-LABEL: @t3_commutative(
|
||||
; CHECK-NEXT: [[Y:%.*]] = call i8 @gen8()
|
||||
; CHECK-NEXT: [[T0:%.*]] = add i8 [[Y]], [[X:%.*]]
|
||||
; CHECK-NEXT: call void @use8(i8 [[T0]])
|
||||
; CHECK-NEXT: [[R:%.*]] = icmp ult i8 [[T0]], [[Y]]
|
||||
; CHECK-NEXT: ret i1 [[R]]
|
||||
;
|
||||
%y = call i8 @gen8()
|
||||
%t0 = add i8 %y, %x ; swapped
|
||||
call void @use8(i8 %t0)
|
||||
%r = icmp ult i8 %t0, %y
|
||||
ret i1 %r
|
||||
}
|
||||
|
||||
define i1 @t4_commutative(i8 %x, i8 %y) {
|
||||
; CHECK-LABEL: @t4_commutative(
|
||||
; CHECK-NEXT: [[T0:%.*]] = add i8 [[X:%.*]], [[Y:%.*]]
|
||||
; CHECK-NEXT: call void @use8(i8 [[T0]])
|
||||
; CHECK-NEXT: [[R:%.*]] = icmp ult i8 [[T0]], [[Y]]
|
||||
; CHECK-NEXT: ret i1 [[R]]
|
||||
;
|
||||
%t0 = add i8 %x, %y
|
||||
call void @use8(i8 %t0)
|
||||
%r = icmp ugt i8 %y, %t0 ; swapped
|
||||
ret i1 %r
|
||||
}
|
||||
|
||||
define i1 @t5_commutative(i8 %x) {
|
||||
; CHECK-LABEL: @t5_commutative(
|
||||
; CHECK-NEXT: [[Y:%.*]] = call i8 @gen8()
|
||||
; CHECK-NEXT: [[T0:%.*]] = add i8 [[Y]], [[X:%.*]]
|
||||
; CHECK-NEXT: call void @use8(i8 [[T0]])
|
||||
; CHECK-NEXT: [[R:%.*]] = icmp ugt i8 [[Y]], [[T0]]
|
||||
; CHECK-NEXT: ret i1 [[R]]
|
||||
;
|
||||
%y = call i8 @gen8()
|
||||
%t0 = add i8 %y, %x ; swapped
|
||||
call void @use8(i8 %t0)
|
||||
%r = icmp ugt i8 %y, %t0 ; swapped
|
||||
ret i1 %r
|
||||
}
|
||||
|
||||
; Extra-use tests
|
||||
|
||||
define i1 @t6_no_extrause(i8 %x, i8 %y) {
|
||||
; CHECK-LABEL: @t6_no_extrause(
|
||||
; CHECK-NEXT: [[TMP1:%.*]] = xor i8 [[Y:%.*]], -1
|
||||
; CHECK-NEXT: [[R:%.*]] = icmp ult i8 [[TMP1]], [[X:%.*]]
|
||||
; CHECK-NEXT: ret i1 [[R]]
|
||||
;
|
||||
%t0 = add i8 %x, %y
|
||||
%r = icmp ult i8 %t0, %y
|
||||
ret i1 %r
|
||||
}
|
||||
|
||||
; Negative tests
|
||||
|
||||
define i1 @n7_different_y(i8 %x, i8 %y0, i8 %y1) {
|
||||
; CHECK-LABEL: @n7_different_y(
|
||||
; CHECK-NEXT: [[T0:%.*]] = add i8 [[X:%.*]], [[Y0:%.*]]
|
||||
; CHECK-NEXT: call void @use8(i8 [[T0]])
|
||||
; CHECK-NEXT: [[R:%.*]] = icmp ult i8 [[T0]], [[Y1:%.*]]
|
||||
; CHECK-NEXT: ret i1 [[R]]
|
||||
;
|
||||
%t0 = add i8 %x, %y0
|
||||
call void @use8(i8 %t0)
|
||||
%r = icmp ult i8 %t0, %y1
|
||||
ret i1 %r
|
||||
}
|
||||
|
||||
define i1 @n8_wrong_pred0(i8 %x, i8 %y) {
|
||||
; CHECK-LABEL: @n8_wrong_pred0(
|
||||
; CHECK-NEXT: [[T0:%.*]] = add i8 [[X:%.*]], [[Y:%.*]]
|
||||
; CHECK-NEXT: call void @use8(i8 [[T0]])
|
||||
; CHECK-NEXT: [[R:%.*]] = icmp ule i8 [[T0]], [[Y]]
|
||||
; CHECK-NEXT: ret i1 [[R]]
|
||||
;
|
||||
%t0 = add i8 %x, %y
|
||||
call void @use8(i8 %t0)
|
||||
%r = icmp ule i8 %t0, %y
|
||||
ret i1 %r
|
||||
}
|
||||
|
||||
define i1 @n9_wrong_pred1(i8 %x, i8 %y) {
|
||||
; CHECK-LABEL: @n9_wrong_pred1(
|
||||
; CHECK-NEXT: [[T0:%.*]] = add i8 [[X:%.*]], [[Y:%.*]]
|
||||
; CHECK-NEXT: call void @use8(i8 [[T0]])
|
||||
; CHECK-NEXT: [[R:%.*]] = icmp ugt i8 [[T0]], [[Y]]
|
||||
; CHECK-NEXT: ret i1 [[R]]
|
||||
;
|
||||
%t0 = add i8 %x, %y
|
||||
call void @use8(i8 %t0)
|
||||
%r = icmp ugt i8 %t0, %y
|
||||
ret i1 %r
|
||||
}
|
||||
|
||||
define i1 @n10_wrong_pred2(i8 %x, i8 %y) {
|
||||
; CHECK-LABEL: @n10_wrong_pred2(
|
||||
; CHECK-NEXT: [[T0:%.*]] = add i8 [[X:%.*]], [[Y:%.*]]
|
||||
; CHECK-NEXT: call void @use8(i8 [[T0]])
|
||||
; CHECK-NEXT: [[R:%.*]] = icmp eq i8 [[X]], 0
|
||||
; CHECK-NEXT: ret i1 [[R]]
|
||||
;
|
||||
%t0 = add i8 %x, %y
|
||||
call void @use8(i8 %t0)
|
||||
%r = icmp eq i8 %t0, %y
|
||||
ret i1 %r
|
||||
}
|
||||
|
||||
define i1 @n11_wrong_pred3(i8 %x, i8 %y) {
|
||||
; CHECK-LABEL: @n11_wrong_pred3(
|
||||
; CHECK-NEXT: [[T0:%.*]] = add i8 [[X:%.*]], [[Y:%.*]]
|
||||
; CHECK-NEXT: call void @use8(i8 [[T0]])
|
||||
; CHECK-NEXT: [[R:%.*]] = icmp ne i8 [[X]], 0
|
||||
; CHECK-NEXT: ret i1 [[R]]
|
||||
;
|
||||
%t0 = add i8 %x, %y
|
||||
call void @use8(i8 %t0)
|
||||
%r = icmp ne i8 %t0, %y
|
||||
ret i1 %r
|
||||
}
|
||||
|
||||
define i1 @n12_wrong_pred4(i8 %x, i8 %y) {
|
||||
; CHECK-LABEL: @n12_wrong_pred4(
|
||||
; CHECK-NEXT: [[T0:%.*]] = add i8 [[X:%.*]], [[Y:%.*]]
|
||||
; CHECK-NEXT: call void @use8(i8 [[T0]])
|
||||
; CHECK-NEXT: [[R:%.*]] = icmp slt i8 [[T0]], [[Y]]
|
||||
; CHECK-NEXT: ret i1 [[R]]
|
||||
;
|
||||
%t0 = add i8 %x, %y
|
||||
call void @use8(i8 %t0)
|
||||
%r = icmp slt i8 %t0, %y
|
||||
ret i1 %r
|
||||
}
|
||||
|
||||
define i1 @n13_wrong_pred5(i8 %x, i8 %y) {
|
||||
; CHECK-LABEL: @n13_wrong_pred5(
|
||||
; CHECK-NEXT: [[T0:%.*]] = add i8 [[X:%.*]], [[Y:%.*]]
|
||||
; CHECK-NEXT: call void @use8(i8 [[T0]])
|
||||
; CHECK-NEXT: [[R:%.*]] = icmp sle i8 [[T0]], [[Y]]
|
||||
; CHECK-NEXT: ret i1 [[R]]
|
||||
;
|
||||
%t0 = add i8 %x, %y
|
||||
call void @use8(i8 %t0)
|
||||
%r = icmp sle i8 %t0, %y
|
||||
ret i1 %r
|
||||
}
|
||||
|
||||
define i1 @n14_wrong_pred6(i8 %x, i8 %y) {
|
||||
; CHECK-LABEL: @n14_wrong_pred6(
|
||||
; CHECK-NEXT: [[T0:%.*]] = add i8 [[X:%.*]], [[Y:%.*]]
|
||||
; CHECK-NEXT: call void @use8(i8 [[T0]])
|
||||
; CHECK-NEXT: [[R:%.*]] = icmp sgt i8 [[T0]], [[Y]]
|
||||
; CHECK-NEXT: ret i1 [[R]]
|
||||
;
|
||||
%t0 = add i8 %x, %y
|
||||
call void @use8(i8 %t0)
|
||||
%r = icmp sgt i8 %t0, %y
|
||||
ret i1 %r
|
||||
}
|
||||
|
||||
define i1 @n15_wrong_pred7(i8 %x, i8 %y) {
|
||||
; CHECK-LABEL: @n15_wrong_pred7(
|
||||
; CHECK-NEXT: [[T0:%.*]] = add i8 [[X:%.*]], [[Y:%.*]]
|
||||
; CHECK-NEXT: call void @use8(i8 [[T0]])
|
||||
; CHECK-NEXT: [[R:%.*]] = icmp sge i8 [[T0]], [[Y]]
|
||||
; CHECK-NEXT: ret i1 [[R]]
|
||||
;
|
||||
%t0 = add i8 %x, %y
|
||||
call void @use8(i8 %t0)
|
||||
%r = icmp sge i8 %t0, %y
|
||||
ret i1 %r
|
||||
}
|
||||
|
|
@ -0,0 +1,189 @@
|
|||
; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
|
||||
; RUN: opt %s -instcombine -S | FileCheck %s
|
||||
|
||||
; Should fold
|
||||
; (%y ^ -1) u< %x
|
||||
; to
|
||||
; @llvm.uadd.with.overflow(%x, %y) + extractvalue + not
|
||||
;
|
||||
; All tests here have extra uses, to ensure that the pattern isn't perturbed.
|
||||
|
||||
declare void @use8(i8)
|
||||
declare void @use2x8(<2 x i8>)
|
||||
|
||||
define i1 @t0_basic(i8 %x, i8 %y) {
|
||||
; CHECK-LABEL: @t0_basic(
|
||||
; CHECK-NEXT: [[T0:%.*]] = xor i8 [[Y:%.*]], -1
|
||||
; CHECK-NEXT: call void @use8(i8 [[T0]])
|
||||
; CHECK-NEXT: [[R:%.*]] = icmp ult i8 [[T0]], [[X:%.*]]
|
||||
; CHECK-NEXT: ret i1 [[R]]
|
||||
;
|
||||
%t0 = xor i8 %y, -1
|
||||
call void @use8(i8 %t0)
|
||||
%r = icmp ult i8 %t0, %x
|
||||
ret i1 %r
|
||||
}
|
||||
|
||||
define <2 x i1> @t1_vec(<2 x i8> %x, <2 x i8> %y) {
|
||||
; CHECK-LABEL: @t1_vec(
|
||||
; CHECK-NEXT: [[T0:%.*]] = xor <2 x i8> [[Y:%.*]], <i8 -1, i8 -1>
|
||||
; CHECK-NEXT: call void @use2x8(<2 x i8> [[T0]])
|
||||
; CHECK-NEXT: [[R:%.*]] = icmp ult <2 x i8> [[T0]], [[X:%.*]]
|
||||
; CHECK-NEXT: ret <2 x i1> [[R]]
|
||||
;
|
||||
%t0 = xor <2 x i8> %y, <i8 -1, i8 -1>
|
||||
call void @use2x8(<2 x i8> %t0)
|
||||
%r = icmp ult <2 x i8> %t0, %x
|
||||
ret <2 x i1> %r
|
||||
}
|
||||
|
||||
; Commutativity
|
||||
|
||||
declare i8 @gen8()
|
||||
|
||||
define i1 @t2_commutative(i8 %y) {
|
||||
; CHECK-LABEL: @t2_commutative(
|
||||
; CHECK-NEXT: [[T0:%.*]] = xor i8 [[Y:%.*]], -1
|
||||
; CHECK-NEXT: call void @use8(i8 [[T0]])
|
||||
; CHECK-NEXT: [[X:%.*]] = call i8 @gen8()
|
||||
; CHECK-NEXT: [[R:%.*]] = icmp ule i8 [[X]], [[T0]]
|
||||
; CHECK-NEXT: ret i1 [[R]]
|
||||
;
|
||||
%t0 = xor i8 %y, -1
|
||||
call void @use8(i8 %t0)
|
||||
%x = call i8 @gen8()
|
||||
%r = icmp ule i8 %x, %t0 ; swapped
|
||||
ret i1 %r
|
||||
}
|
||||
|
||||
; Extra-use tests
|
||||
|
||||
define i1 @t3_no_extrause(i8 %x, i8 %y) {
|
||||
; CHECK-LABEL: @t3_no_extrause(
|
||||
; CHECK-NEXT: [[T0:%.*]] = xor i8 [[Y:%.*]], -1
|
||||
; CHECK-NEXT: [[R:%.*]] = icmp ult i8 [[T0]], [[X:%.*]]
|
||||
; CHECK-NEXT: ret i1 [[R]]
|
||||
;
|
||||
%t0 = xor i8 %y, -1
|
||||
%r = icmp ult i8 %t0, %x
|
||||
ret i1 %r
|
||||
}
|
||||
|
||||
; Negative tests
|
||||
|
||||
define i1 @n4_wrong_pred0(i8 %x, i8 %y) {
|
||||
; CHECK-LABEL: @n4_wrong_pred0(
|
||||
; CHECK-NEXT: [[T0:%.*]] = xor i8 [[Y:%.*]], -1
|
||||
; CHECK-NEXT: call void @use8(i8 [[T0]])
|
||||
; CHECK-NEXT: [[R:%.*]] = icmp ule i8 [[T0]], [[X:%.*]]
|
||||
; CHECK-NEXT: ret i1 [[R]]
|
||||
;
|
||||
%t0 = xor i8 %y, -1
|
||||
call void @use8(i8 %t0)
|
||||
%r = icmp ule i8 %t0, %x
|
||||
ret i1 %r
|
||||
}
|
||||
|
||||
define i1 @n5_wrong_pred1(i8 %x, i8 %y) {
|
||||
; CHECK-LABEL: @n5_wrong_pred1(
|
||||
; CHECK-NEXT: [[T0:%.*]] = xor i8 [[Y:%.*]], -1
|
||||
; CHECK-NEXT: call void @use8(i8 [[T0]])
|
||||
; CHECK-NEXT: [[R:%.*]] = icmp ugt i8 [[T0]], [[X:%.*]]
|
||||
; CHECK-NEXT: ret i1 [[R]]
|
||||
;
|
||||
%t0 = xor i8 %y, -1
|
||||
call void @use8(i8 %t0)
|
||||
%r = icmp ugt i8 %t0, %x
|
||||
ret i1 %r
|
||||
}
|
||||
|
||||
define i1 @n6_wrong_pred2(i8 %x, i8 %y) {
|
||||
; CHECK-LABEL: @n6_wrong_pred2(
|
||||
; CHECK-NEXT: [[T0:%.*]] = xor i8 [[Y:%.*]], -1
|
||||
; CHECK-NEXT: call void @use8(i8 [[T0]])
|
||||
; CHECK-NEXT: [[R:%.*]] = icmp eq i8 [[T0]], [[X:%.*]]
|
||||
; CHECK-NEXT: ret i1 [[R]]
|
||||
;
|
||||
%t0 = xor i8 %y, -1
|
||||
call void @use8(i8 %t0)
|
||||
%r = icmp eq i8 %t0, %x
|
||||
ret i1 %r
|
||||
}
|
||||
|
||||
define i1 @n7_wrong_pred3(i8 %x, i8 %y) {
|
||||
; CHECK-LABEL: @n7_wrong_pred3(
|
||||
; CHECK-NEXT: [[T0:%.*]] = xor i8 [[Y:%.*]], -1
|
||||
; CHECK-NEXT: call void @use8(i8 [[T0]])
|
||||
; CHECK-NEXT: [[R:%.*]] = icmp ne i8 [[T0]], [[X:%.*]]
|
||||
; CHECK-NEXT: ret i1 [[R]]
|
||||
;
|
||||
%t0 = xor i8 %y, -1
|
||||
call void @use8(i8 %t0)
|
||||
%r = icmp ne i8 %t0, %x
|
||||
ret i1 %r
|
||||
}
|
||||
|
||||
define i1 @n8_wrong_pred4(i8 %x, i8 %y) {
|
||||
; CHECK-LABEL: @n8_wrong_pred4(
|
||||
; CHECK-NEXT: [[T0:%.*]] = xor i8 [[Y:%.*]], -1
|
||||
; CHECK-NEXT: call void @use8(i8 [[T0]])
|
||||
; CHECK-NEXT: [[R:%.*]] = icmp slt i8 [[T0]], [[X:%.*]]
|
||||
; CHECK-NEXT: ret i1 [[R]]
|
||||
;
|
||||
%t0 = xor i8 %y, -1
|
||||
call void @use8(i8 %t0)
|
||||
%r = icmp slt i8 %t0, %x
|
||||
ret i1 %r
|
||||
}
|
||||
|
||||
define i1 @n9_wrong_pred5(i8 %x, i8 %y) {
|
||||
; CHECK-LABEL: @n9_wrong_pred5(
|
||||
; CHECK-NEXT: [[T0:%.*]] = xor i8 [[Y:%.*]], -1
|
||||
; CHECK-NEXT: call void @use8(i8 [[T0]])
|
||||
; CHECK-NEXT: [[R:%.*]] = icmp sle i8 [[T0]], [[X:%.*]]
|
||||
; CHECK-NEXT: ret i1 [[R]]
|
||||
;
|
||||
%t0 = xor i8 %y, -1
|
||||
call void @use8(i8 %t0)
|
||||
%r = icmp sle i8 %t0, %x
|
||||
ret i1 %r
|
||||
}
|
||||
|
||||
define i1 @n10_wrong_pred6(i8 %x, i8 %y) {
|
||||
; CHECK-LABEL: @n10_wrong_pred6(
|
||||
; CHECK-NEXT: [[T0:%.*]] = xor i8 [[Y:%.*]], -1
|
||||
; CHECK-NEXT: call void @use8(i8 [[T0]])
|
||||
; CHECK-NEXT: [[R:%.*]] = icmp sgt i8 [[T0]], [[X:%.*]]
|
||||
; CHECK-NEXT: ret i1 [[R]]
|
||||
;
|
||||
%t0 = xor i8 %y, -1
|
||||
call void @use8(i8 %t0)
|
||||
%r = icmp sgt i8 %t0, %x
|
||||
ret i1 %r
|
||||
}
|
||||
|
||||
define i1 @n11_wrong_pred7(i8 %x, i8 %y) {
|
||||
; CHECK-LABEL: @n11_wrong_pred7(
|
||||
; CHECK-NEXT: [[T0:%.*]] = xor i8 [[Y:%.*]], -1
|
||||
; CHECK-NEXT: call void @use8(i8 [[T0]])
|
||||
; CHECK-NEXT: [[R:%.*]] = icmp sge i8 [[T0]], [[X:%.*]]
|
||||
; CHECK-NEXT: ret i1 [[R]]
|
||||
;
|
||||
%t0 = xor i8 %y, -1
|
||||
call void @use8(i8 %t0)
|
||||
%r = icmp sge i8 %t0, %x
|
||||
ret i1 %r
|
||||
}
|
||||
|
||||
define <2 x i1> @n12_vec_nonsplat(<2 x i8> %x, <2 x i8> %y) {
|
||||
; CHECK-LABEL: @n12_vec_nonsplat(
|
||||
; CHECK-NEXT: [[T0:%.*]] = xor <2 x i8> [[Y:%.*]], <i8 -1, i8 -2>
|
||||
; CHECK-NEXT: call void @use2x8(<2 x i8> [[T0]])
|
||||
; CHECK-NEXT: [[R:%.*]] = icmp ult <2 x i8> [[T0]], [[X:%.*]]
|
||||
; CHECK-NEXT: ret <2 x i1> [[R]]
|
||||
;
|
||||
%t0 = xor <2 x i8> %y, <i8 -1, i8 -2> ; must be -1.
|
||||
call void @use2x8(<2 x i8> %t0)
|
||||
%r = icmp ult <2 x i8> %t0, %x
|
||||
ret <2 x i1> %r
|
||||
}
|
||||
|
|
@ -1,12 +1,12 @@
|
|||
; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
|
||||
; RUN: opt %s -instcombine -S | FileCheck %s
|
||||
|
||||
; Fold
|
||||
; Should fold
|
||||
; (%x + %y) u< %x
|
||||
; or
|
||||
; (%x + %y) u< %y
|
||||
; to
|
||||
; @llvm.add.with.overflow(%x, %y) + extractvalue
|
||||
; @llvm.uadd.with.overflow(%x, %y) + extractvalue
|
||||
|
||||
define i1 @t0_basic(i8 %x, i8 %y) {
|
||||
; CHECK-LABEL: @t0_basic(
|
||||
|
|
@ -86,8 +86,8 @@ define i1 @t5_commutative(i8 %x) {
|
|||
|
||||
declare void @use8(i8)
|
||||
|
||||
define i1 @t6_extrause0(i8 %x, i8 %y) {
|
||||
; CHECK-LABEL: @t6_extrause0(
|
||||
define i1 @t6_extrause(i8 %x, i8 %y) {
|
||||
; CHECK-LABEL: @t6_extrause(
|
||||
; CHECK-NEXT: [[T0:%.*]] = add i8 [[X:%.*]], [[Y:%.*]]
|
||||
; CHECK-NEXT: call void @use8(i8 [[T0]])
|
||||
; CHECK-NEXT: [[R:%.*]] = icmp ult i8 [[T0]], [[Y]]
|
||||
|
|
|
|||
Loading…
Reference in New Issue