forked from OSchip/llvm-project
394 lines
9.8 KiB
LLVM
394 lines
9.8 KiB
LLVM
; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
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; RUN: opt < %s -passes=instsimplify -S | FileCheck %s
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; This is a specialization of generic folds for min/max values targeted to the
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; 'null' ptr constant.
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; Related tests for non-pointer types should be included in another file.
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; There are 6 basic patterns (or 3 with DeMorganized equivalent) with
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; 2 (commute logic op) *
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; 2 (swap compare operands) *
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; variations for a total of 24 tests.
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;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
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;
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; (X == null) && (X > Y) --> false
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;
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;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
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define i1 @ugt_and_min(ptr %x, ptr %y) {
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; CHECK-LABEL: @ugt_and_min(
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; CHECK-NEXT: ret i1 false
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;
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%cmp = icmp ugt ptr %x, %y
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%cmpeq = icmp eq ptr %x, null
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%r = and i1 %cmp, %cmpeq
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ret i1 %r
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}
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define i1 @ugt_and_min_commute(ptr %x, ptr %y) {
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; CHECK-LABEL: @ugt_and_min_commute(
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; CHECK-NEXT: ret i1 false
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;
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%cmp = icmp ugt ptr %x, %y
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%cmpeq = icmp eq ptr %x, null
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%r = and i1 %cmpeq, %cmp
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ret i1 %r
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}
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define i1 @ugt_swap_and_min(ptr %x, ptr %y) {
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; CHECK-LABEL: @ugt_swap_and_min(
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; CHECK-NEXT: ret i1 false
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;
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%cmp = icmp ult ptr %y, %x
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%cmpeq = icmp eq ptr %x, null
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%r = and i1 %cmp, %cmpeq
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ret i1 %r
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}
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define i1 @ugt_swap_and_min_commute(ptr %x, ptr %y) {
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; CHECK-LABEL: @ugt_swap_and_min_commute(
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; CHECK-NEXT: ret i1 false
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;
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%cmp = icmp ult ptr %y, %x
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%cmpeq = icmp eq ptr %x, null
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%r = and i1 %cmpeq, %cmp
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ret i1 %r
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}
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; Negative test - signed compare
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define i1 @sgt_and_min(ptr %x, ptr %y) {
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; CHECK-LABEL: @sgt_and_min(
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; CHECK-NEXT: [[CMP:%.*]] = icmp sgt ptr [[X:%.*]], [[Y:%.*]]
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; CHECK-NEXT: [[CMPEQ:%.*]] = icmp eq ptr [[X]], null
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; CHECK-NEXT: [[R:%.*]] = and i1 [[CMP]], [[CMPEQ]]
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; CHECK-NEXT: ret i1 [[R]]
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;
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%cmp = icmp sgt ptr %x, %y
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%cmpeq = icmp eq ptr %x, null
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%r = and i1 %cmp, %cmpeq
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ret i1 %r
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}
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;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
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;
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; (X != null) || (X <= Y) --> true
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;
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;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
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define i1 @ule_or_not_min(ptr %x, ptr %y) {
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; CHECK-LABEL: @ule_or_not_min(
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; CHECK-NEXT: ret i1 true
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;
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%cmp = icmp ule ptr %x, %y
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%cmpeq = icmp ne ptr %x, null
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%r = or i1 %cmp, %cmpeq
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ret i1 %r
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}
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define i1 @ule_or_not_min_commute(ptr %x, ptr %y) {
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; CHECK-LABEL: @ule_or_not_min_commute(
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; CHECK-NEXT: ret i1 true
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;
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%cmp = icmp ule ptr %x, %y
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%cmpeq = icmp ne ptr %x, null
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%r = or i1 %cmpeq, %cmp
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ret i1 %r
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}
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define i1 @ule_swap_or_not_min(ptr %x, ptr %y) {
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; CHECK-LABEL: @ule_swap_or_not_min(
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; CHECK-NEXT: ret i1 true
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;
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%cmp = icmp uge ptr %y, %x
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%cmpeq = icmp ne ptr %x, null
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%r = or i1 %cmp, %cmpeq
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ret i1 %r
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}
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define i1 @ule_swap_or_not_min_commute(ptr %x, ptr %y) {
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; CHECK-LABEL: @ule_swap_or_not_min_commute(
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; CHECK-NEXT: ret i1 true
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;
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%cmp = icmp uge ptr %y, %x
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%cmpeq = icmp ne ptr %x, null
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%r = or i1 %cmpeq, %cmp
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ret i1 %r
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}
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; Negative test - signed compare
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define i1 @sle_or_not_min(ptr %x, ptr %y) {
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; CHECK-LABEL: @sle_or_not_min(
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; CHECK-NEXT: [[CMP:%.*]] = icmp sle ptr [[X:%.*]], [[Y:%.*]]
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; CHECK-NEXT: [[CMPEQ:%.*]] = icmp ne ptr [[X]], null
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; CHECK-NEXT: [[R:%.*]] = or i1 [[CMP]], [[CMPEQ]]
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; CHECK-NEXT: ret i1 [[R]]
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;
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%cmp = icmp sle ptr %x, %y
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%cmpeq = icmp ne ptr %x, null
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%r = or i1 %cmp, %cmpeq
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ret i1 %r
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}
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;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
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;
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; (X == null) && (X <= Y) --> X == null
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;
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;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
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define i1 @ule_and_min(ptr %x, ptr %y) {
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; CHECK-LABEL: @ule_and_min(
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; CHECK-NEXT: [[CMPEQ:%.*]] = icmp eq ptr [[X:%.*]], null
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; CHECK-NEXT: ret i1 [[CMPEQ]]
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;
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%cmp = icmp ule ptr %x, %y
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%cmpeq = icmp eq ptr %x, null
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%r = and i1 %cmp, %cmpeq
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ret i1 %r
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}
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define i1 @ule_and_min_commute(ptr %x, ptr %y) {
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; CHECK-LABEL: @ule_and_min_commute(
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; CHECK-NEXT: [[CMPEQ:%.*]] = icmp eq ptr [[X:%.*]], null
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; CHECK-NEXT: ret i1 [[CMPEQ]]
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;
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%cmp = icmp ule ptr %x, %y
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%cmpeq = icmp eq ptr %x, null
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%r = and i1 %cmpeq, %cmp
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ret i1 %r
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}
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define i1 @ule_swap_and_min(ptr %x, ptr %y) {
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; CHECK-LABEL: @ule_swap_and_min(
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; CHECK-NEXT: [[CMPEQ:%.*]] = icmp eq ptr [[X:%.*]], null
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; CHECK-NEXT: ret i1 [[CMPEQ]]
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;
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%cmp = icmp uge ptr %y, %x
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%cmpeq = icmp eq ptr %x, null
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%r = and i1 %cmp, %cmpeq
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ret i1 %r
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}
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define i1 @ule_swap_and_min_commute(ptr %x, ptr %y) {
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; CHECK-LABEL: @ule_swap_and_min_commute(
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; CHECK-NEXT: [[CMPEQ:%.*]] = icmp eq ptr [[X:%.*]], null
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; CHECK-NEXT: ret i1 [[CMPEQ]]
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;
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%cmp = icmp uge ptr %y, %x
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%cmpeq = icmp eq ptr %x, null
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%r = and i1 %cmpeq, %cmp
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ret i1 %r
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}
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; Negative test - signed compare
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define i1 @sle_and_min(ptr %x, ptr %y) {
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; CHECK-LABEL: @sle_and_min(
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; CHECK-NEXT: [[CMP:%.*]] = icmp sle ptr [[X:%.*]], [[Y:%.*]]
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; CHECK-NEXT: [[CMPEQ:%.*]] = icmp eq ptr [[X]], null
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; CHECK-NEXT: [[R:%.*]] = and i1 [[CMP]], [[CMPEQ]]
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; CHECK-NEXT: ret i1 [[R]]
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;
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%cmp = icmp sle ptr %x, %y
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%cmpeq = icmp eq ptr %x, null
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%r = and i1 %cmp, %cmpeq
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ret i1 %r
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}
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;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
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;
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; (X == null) || (X <= Y) --> X <= Y
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;
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;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
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define i1 @ule_or_min(ptr %x, ptr %y) {
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; CHECK-LABEL: @ule_or_min(
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; CHECK-NEXT: [[CMP:%.*]] = icmp ule ptr [[X:%.*]], [[Y:%.*]]
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; CHECK-NEXT: ret i1 [[CMP]]
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;
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%cmp = icmp ule ptr %x, %y
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%cmpeq = icmp eq ptr %x, null
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%r = or i1 %cmp, %cmpeq
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ret i1 %r
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}
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define i1 @ule_or_min_commute(ptr %x, ptr %y) {
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; CHECK-LABEL: @ule_or_min_commute(
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; CHECK-NEXT: [[CMP:%.*]] = icmp ule ptr [[X:%.*]], [[Y:%.*]]
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; CHECK-NEXT: ret i1 [[CMP]]
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;
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%cmp = icmp ule ptr %x, %y
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%cmpeq = icmp eq ptr %x, null
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%r = or i1 %cmpeq, %cmp
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ret i1 %r
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}
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define i1 @ule_swap_or_min(ptr %x, ptr %y) {
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; CHECK-LABEL: @ule_swap_or_min(
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; CHECK-NEXT: [[CMP:%.*]] = icmp uge ptr [[Y:%.*]], [[X:%.*]]
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; CHECK-NEXT: ret i1 [[CMP]]
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;
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%cmp = icmp uge ptr %y, %x
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%cmpeq = icmp eq ptr %x, null
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%r = or i1 %cmp, %cmpeq
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ret i1 %r
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}
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define i1 @ule_swap_or_min_commute(ptr %x, ptr %y) {
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; CHECK-LABEL: @ule_swap_or_min_commute(
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; CHECK-NEXT: [[CMP:%.*]] = icmp uge ptr [[Y:%.*]], [[X:%.*]]
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; CHECK-NEXT: ret i1 [[CMP]]
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;
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%cmp = icmp uge ptr %y, %x
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%cmpeq = icmp eq ptr %x, null
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%r = or i1 %cmpeq, %cmp
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ret i1 %r
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}
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; Negative test - signed compare
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define i1 @sle_or_min(ptr %x, ptr %y) {
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; CHECK-LABEL: @sle_or_min(
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; CHECK-NEXT: [[CMP:%.*]] = icmp sle ptr [[X:%.*]], [[Y:%.*]]
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; CHECK-NEXT: [[CMPEQ:%.*]] = icmp eq ptr [[X]], null
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; CHECK-NEXT: [[R:%.*]] = or i1 [[CMP]], [[CMPEQ]]
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; CHECK-NEXT: ret i1 [[R]]
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;
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%cmp = icmp sle ptr %x, %y
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%cmpeq = icmp eq ptr %x, null
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%r = or i1 %cmp, %cmpeq
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ret i1 %r
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}
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;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
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;
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; (X != null) && (X > Y) --> X > Y
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;
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;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
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define i1 @ugt_and_not_min(ptr %x, ptr %y) {
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; CHECK-LABEL: @ugt_and_not_min(
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; CHECK-NEXT: [[CMP:%.*]] = icmp ugt ptr [[X:%.*]], [[Y:%.*]]
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; CHECK-NEXT: ret i1 [[CMP]]
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;
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%cmp = icmp ugt ptr %x, %y
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%cmpeq = icmp ne ptr %x, null
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%r = and i1 %cmp, %cmpeq
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ret i1 %r
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}
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define i1 @ugt_and_not_min_commute(ptr %x, ptr %y) {
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; CHECK-LABEL: @ugt_and_not_min_commute(
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; CHECK-NEXT: [[CMP:%.*]] = icmp ugt ptr [[X:%.*]], [[Y:%.*]]
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; CHECK-NEXT: ret i1 [[CMP]]
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;
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%cmp = icmp ugt ptr %x, %y
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%cmpeq = icmp ne ptr %x, null
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%r = and i1 %cmpeq, %cmp
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ret i1 %r
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}
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define i1 @ugt_swap_and_not_min(ptr %x, ptr %y) {
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; CHECK-LABEL: @ugt_swap_and_not_min(
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; CHECK-NEXT: [[CMP:%.*]] = icmp ult ptr [[Y:%.*]], [[X:%.*]]
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; CHECK-NEXT: ret i1 [[CMP]]
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;
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%cmp = icmp ult ptr %y, %x
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%cmpeq = icmp ne ptr %x, null
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%r = and i1 %cmp, %cmpeq
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ret i1 %r
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}
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define i1 @ugt_swap_and_not_min_commute(ptr %x, ptr %y) {
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; CHECK-LABEL: @ugt_swap_and_not_min_commute(
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; CHECK-NEXT: [[CMP:%.*]] = icmp ult ptr [[Y:%.*]], [[X:%.*]]
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; CHECK-NEXT: ret i1 [[CMP]]
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;
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%cmp = icmp ult ptr %y, %x
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%cmpeq = icmp ne ptr %x, null
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%r = and i1 %cmpeq, %cmp
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ret i1 %r
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}
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; Negative test - signed compare
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define i1 @sgt_and_not_min(ptr %x, ptr %y) {
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; CHECK-LABEL: @sgt_and_not_min(
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; CHECK-NEXT: [[CMP:%.*]] = icmp sgt ptr [[X:%.*]], [[Y:%.*]]
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; CHECK-NEXT: [[CMPEQ:%.*]] = icmp ne ptr [[X]], null
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; CHECK-NEXT: [[R:%.*]] = and i1 [[CMP]], [[CMPEQ]]
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; CHECK-NEXT: ret i1 [[R]]
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;
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%cmp = icmp sgt ptr %x, %y
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%cmpeq = icmp ne ptr %x, null
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%r = and i1 %cmp, %cmpeq
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ret i1 %r
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}
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;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
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;
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; (X != null) || (X > Y) --> X != null
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;
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;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
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define i1 @ugt_or_not_min(ptr %x, ptr %y) {
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; CHECK-LABEL: @ugt_or_not_min(
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; CHECK-NEXT: [[CMPEQ:%.*]] = icmp ne ptr [[X:%.*]], null
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; CHECK-NEXT: ret i1 [[CMPEQ]]
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;
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%cmp = icmp ugt ptr %x, %y
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%cmpeq = icmp ne ptr %x, null
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%r = or i1 %cmp, %cmpeq
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ret i1 %r
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}
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define i1 @ugt_or_not_min_commute(ptr %x, ptr %y) {
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; CHECK-LABEL: @ugt_or_not_min_commute(
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; CHECK-NEXT: [[CMPEQ:%.*]] = icmp ne ptr [[X:%.*]], null
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; CHECK-NEXT: ret i1 [[CMPEQ]]
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;
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%cmp = icmp ugt ptr %x, %y
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%cmpeq = icmp ne ptr %x, null
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%r = or i1 %cmpeq, %cmp
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ret i1 %r
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}
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define i1 @ugt_swap_or_not_min(ptr %x, ptr %y) {
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; CHECK-LABEL: @ugt_swap_or_not_min(
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; CHECK-NEXT: [[CMPEQ:%.*]] = icmp ne ptr [[X:%.*]], null
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; CHECK-NEXT: ret i1 [[CMPEQ]]
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;
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%cmp = icmp ult ptr %y, %x
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%cmpeq = icmp ne ptr %x, null
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%r = or i1 %cmp, %cmpeq
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ret i1 %r
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}
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define i1 @ugt_swap_or_not_min_commute(ptr %x, ptr %y) {
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; CHECK-LABEL: @ugt_swap_or_not_min_commute(
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; CHECK-NEXT: [[CMPEQ:%.*]] = icmp ne ptr [[X:%.*]], null
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; CHECK-NEXT: ret i1 [[CMPEQ]]
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;
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%cmp = icmp ult ptr %y, %x
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%cmpeq = icmp ne ptr %x, null
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%r = or i1 %cmpeq, %cmp
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ret i1 %r
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}
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; Negative test - signed compare
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define i1 @sgt_or_not_min(ptr %x, ptr %y) {
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; CHECK-LABEL: @sgt_or_not_min(
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; CHECK-NEXT: [[CMP:%.*]] = icmp sgt ptr [[X:%.*]], [[Y:%.*]]
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; CHECK-NEXT: [[CMPEQ:%.*]] = icmp ne ptr [[X]], null
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; CHECK-NEXT: [[R:%.*]] = or i1 [[CMP]], [[CMPEQ]]
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; CHECK-NEXT: ret i1 [[R]]
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;
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%cmp = icmp sgt ptr %x, %y
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%cmpeq = icmp ne ptr %x, null
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%r = or i1 %cmp, %cmpeq
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ret i1 %r
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}
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