103 lines
3.0 KiB
LLVM
103 lines
3.0 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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;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
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;
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; (ctpop(X) == N) || (X != 0) --> X != 0
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; where N > 0
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;
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;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
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declare i32 @llvm.ctpop.i32(i32)
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define i1 @eq_or_non_0(i32 %x) {
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; CHECK-LABEL: @eq_or_non_0(
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; CHECK-NEXT: [[NOTZERO:%.*]] = icmp ne i32 [[X:%.*]], 0
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; CHECK-NEXT: ret i1 [[NOTZERO]]
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;
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%t0 = tail call i32 @llvm.ctpop.i32(i32 %x)
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%cmp = icmp eq i32 %t0, 10
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%notzero = icmp ne i32 %x, 0
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%r = or i1 %notzero, %cmp
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ret i1 %r
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}
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declare <2 x i32> @llvm.ctpop.v2i32(<2 x i32>)
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define <2 x i1> @eq_or_non_0_commute(<2 x i32> %x) {
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; CHECK-LABEL: @eq_or_non_0_commute(
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; CHECK-NEXT: [[NOTZERO:%.*]] = icmp ne <2 x i32> [[X:%.*]], zeroinitializer
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; CHECK-NEXT: ret <2 x i1> [[NOTZERO]]
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;
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%t0 = tail call <2 x i32> @llvm.ctpop.v2i32(<2 x i32> %x)
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%cmp = icmp eq <2 x i32> %t0, <i32 20, i32 20>
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%notzero = icmp ne <2 x i32> %x, <i32 0, i32 0>
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%r = or <2 x i1> %cmp, %notzero
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ret <2 x i1> %r
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}
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; Negative test - wrong predicate
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define i1 @eq_or_non_0_wrong_pred1(i32 %x) {
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; CHECK-LABEL: @eq_or_non_0_wrong_pred1(
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; CHECK-NEXT: [[T0:%.*]] = tail call i32 @llvm.ctpop.i32(i32 [[X:%.*]])
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; CHECK-NEXT: [[CMP:%.*]] = icmp ne i32 [[T0]], 10
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; CHECK-NEXT: [[NOTZERO:%.*]] = icmp ne i32 [[X]], 0
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; CHECK-NEXT: [[R:%.*]] = or i1 [[NOTZERO]], [[CMP]]
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; CHECK-NEXT: ret i1 [[R]]
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;
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%t0 = tail call i32 @llvm.ctpop.i32(i32 %x)
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%cmp = icmp ne i32 %t0, 10
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%notzero = icmp ne i32 %x, 0
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%r = or i1 %notzero, %cmp
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ret i1 %r
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}
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;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
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;
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; (ctpop(X) != N) && (X == 0) --> X == 0
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; where N > 0
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;
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;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
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define i1 @ne_and_is_0(i32 %x) {
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; CHECK-LABEL: @ne_and_is_0(
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; CHECK-NEXT: [[ISZERO:%.*]] = icmp eq i32 [[X:%.*]], 0
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; CHECK-NEXT: ret i1 [[ISZERO]]
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;
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%t0 = tail call i32 @llvm.ctpop.i32(i32 %x)
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%cmp = icmp ne i32 %t0, 10
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%iszero = icmp eq i32 %x, 0
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%r = and i1 %iszero, %cmp
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ret i1 %r
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}
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define <2 x i1> @ne_and_is_0_commute(<2 x i32> %x) {
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; CHECK-LABEL: @ne_and_is_0_commute(
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; CHECK-NEXT: [[ISZERO:%.*]] = icmp eq <2 x i32> [[X:%.*]], zeroinitializer
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; CHECK-NEXT: ret <2 x i1> [[ISZERO]]
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;
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%t0 = tail call <2 x i32> @llvm.ctpop.v2i32(<2 x i32> %x)
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%cmp = icmp ne <2 x i32> %t0, <i32 20, i32 20>
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%iszero = icmp eq <2 x i32> %x, <i32 0, i32 0>
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%r = and <2 x i1> %cmp, %iszero
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ret <2 x i1> %r
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}
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; Negative test - wrong predicate
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define i1 @ne_and_is_0_wrong_pred1(i32 %x) {
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; CHECK-LABEL: @ne_and_is_0_wrong_pred1(
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; CHECK-NEXT: [[T0:%.*]] = tail call i32 @llvm.ctpop.i32(i32 [[X:%.*]])
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; CHECK-NEXT: [[CMP:%.*]] = icmp ne i32 [[T0]], 10
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; CHECK-NEXT: [[ISZERO:%.*]] = icmp eq i32 [[X]], 0
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; CHECK-NEXT: [[R:%.*]] = or i1 [[ISZERO]], [[CMP]]
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; CHECK-NEXT: ret i1 [[R]]
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;
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%t0 = tail call i32 @llvm.ctpop.i32(i32 %x)
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%cmp = icmp ne i32 %t0, 10
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%iszero = icmp eq i32 %x, 0
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%r = or i1 %iszero, %cmp
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ret i1 %r
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}
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