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[InstSimplify] add vector tests for isKnownNonZero

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@270498 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Sanjay Patel 2016-05-23 22:09:04 +00:00
parent 5d5ca2aff4
commit 526957f4ed
1 changed files with 81 additions and 0 deletions
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test/Transforms/InstSimplify/vec-cmp.ll Normal file
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; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
; RUN: opt < %s -instsimplify -S | FileCheck %s
; FIXME: isKnownNonZero should work for integer vectors.
define <2 x i1> @nonzero_vec_splat(<2 x i32> %x) {
; CHECK-LABEL: @nonzero_vec_splat(
; CHECK-NEXT: [[Y:%.*]] = or <2 x i32> %x, <i32 1, i32 1>
; CHECK-NEXT: [[C:%.*]] = icmp eq <2 x i32> [[Y]], zeroinitializer
; CHECK-NEXT: ret <2 x i1> [[C]]
;
%y = or <2 x i32> %x, <i32 1, i32 1>
%c = icmp eq <2 x i32> %y, zeroinitializer
ret <2 x i1> %c
}
define <2 x i1> @nonzero_vec_nonsplat(<2 x i32> %x) {
; CHECK-LABEL: @nonzero_vec_nonsplat(
; CHECK-NEXT: [[Y:%.*]] = or <2 x i32> %x, <i32 2, i32 1>
; CHECK-NEXT: [[C:%.*]] = icmp ne <2 x i32> [[Y]], zeroinitializer
; CHECK-NEXT: ret <2 x i1> [[C]]
;
%y = or <2 x i32> %x, <i32 2, i32 1>
%c = icmp ne <2 x i32> %y, zeroinitializer
ret <2 x i1> %c
}
define <2 x i1> @nonzero_vec_undef_elt(<2 x i32> %x) {
; CHECK-LABEL: @nonzero_vec_undef_elt(
; CHECK-NEXT: [[Y:%.*]] = or <2 x i32> %x, <i32 undef, i32 1>
; CHECK-NEXT: [[C:%.*]] = icmp eq <2 x i32> [[Y]], zeroinitializer
; CHECK-NEXT: ret <2 x i1> [[C]]
;
%y = or <2 x i32> %x, <i32 undef, i32 1>
%c = icmp eq <2 x i32> %y, zeroinitializer
ret <2 x i1> %c
}
define <2 x i1> @may_be_zero_vec(<2 x i32> %x) {
; CHECK-LABEL: @may_be_zero_vec(
; CHECK-NEXT: [[Y:%.*]] = or <2 x i32> %x, <i32 0, i32 1>
; CHECK-NEXT: [[C:%.*]] = icmp ne <2 x i32> [[Y]], zeroinitializer
; CHECK-NEXT: ret <2 x i1> [[C]]
;
%y = or <2 x i32> %x, <i32 0, i32 1>
%c = icmp ne <2 x i32> %y, zeroinitializer
ret <2 x i1> %c
}
; Multiplies of non-zero numbers are non-zero if there is no unsigned overflow.
define <2 x i1> @nonzero_vec_mul_nuw(<2 x i32> %x, <2 x i32> %y) {
; CHECK-LABEL: @nonzero_vec_mul_nuw(
; CHECK-NEXT: [[XNZ:%.*]] = or <2 x i32> %x, <i32 1, i32 2>
; CHECK-NEXT: [[YNZ:%.*]] = or <2 x i32> %y, <i32 3, i32 undef>
; CHECK-NEXT: [[M:%.*]] = mul nuw <2 x i32> [[XNZ]], [[YNZ]]
; CHECK-NEXT: [[C:%.*]] = icmp eq <2 x i32> [[M]], zeroinitializer
; CHECK-NEXT: ret <2 x i1> [[C]]
;
%xnz = or <2 x i32> %x, <i32 1, i32 2>
%ynz = or <2 x i32> %y, <i32 3, i32 undef>
%m = mul nuw <2 x i32> %xnz, %ynz
%c = icmp eq <2 x i32> %m, zeroinitializer
ret <2 x i1> %c
}
; Multiplies of non-zero numbers are non-zero if there is no signed overflow.
define <2 x i1> @nonzero_vec_mul_nsw(<2 x i32> %x, <2 x i32> %y) {
; CHECK-LABEL: @nonzero_vec_mul_nsw(
; CHECK-NEXT: [[XNZ:%.*]] = or <2 x i32> %x, <i32 undef, i32 2>
; CHECK-NEXT: [[YNZ:%.*]] = or <2 x i32> %y, <i32 3, i32 4>
; CHECK-NEXT: [[M:%.*]] = mul nsw <2 x i32> [[XNZ]], [[YNZ]]
; CHECK-NEXT: [[C:%.*]] = icmp ne <2 x i32> [[M]], zeroinitializer
; CHECK-NEXT: ret <2 x i1> [[C]]
;
%xnz = or <2 x i32> %x, <i32 undef, i32 2>
%ynz = or <2 x i32> %y, <i32 3, i32 4>
%m = mul nsw <2 x i32> %xnz, %ynz
%c = icmp ne <2 x i32> %m, zeroinitializer
ret <2 x i1> %c
}