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[ConstantFolding] add tests for binops on vectors with undef elements; NFC

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llvm-svn: 340190
This commit is contained in:
Sanjay Patel 2018-08-20 17:31:34 +00:00
parent d7fed08fec
commit eaa473e7b1
1 changed files with 61 additions and 0 deletions
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61
test/Analysis/ConstantFolding/vector-undef-elts.ll Normal file
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; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
; RUN: opt < %s -constprop -S -o - | FileCheck %s
; FIXME: When both operands are undef in a lane, that lane should produce an undef result.
define <3 x i8> @shl() {
; CHECK-LABEL: @shl(
; CHECK-NEXT: ret <3 x i8> zeroinitializer
;
%c = shl <3 x i8> undef, <i8 undef, i8 4, i8 1>
ret <3 x i8> %c
}
define <3 x i8> @and() {
; CHECK-LABEL: @and(
; CHECK-NEXT: ret <3 x i8> zeroinitializer
;
%c = and <3 x i8> <i8 undef, i8 42, i8 undef>, undef
ret <3 x i8> %c
}
define <3 x i8> @and_commute() {
; CHECK-LABEL: @and_commute(
; CHECK-NEXT: ret <3 x i8> zeroinitializer
;
%c = and <3 x i8> undef, <i8 -42, i8 42, i8 undef>
ret <3 x i8> %c
}
define <3 x i8> @or() {
; CHECK-LABEL: @or(
; CHECK-NEXT: ret <3 x i8> <i8 -1, i8 -1, i8 -1>
;
%c = or <3 x i8> <i8 undef, i8 42, i8 undef>, undef
ret <3 x i8> %c
}
define <3 x i8> @or_commute() {
; CHECK-LABEL: @or_commute(
; CHECK-NEXT: ret <3 x i8> <i8 -1, i8 -1, i8 -1>
;
%c = or <3 x i8> undef, <i8 -42, i8 42, i8 undef>
ret <3 x i8> %c
}
define <3 x float> @fadd() {
; CHECK-LABEL: @fadd(
; CHECK-NEXT: ret <3 x float> <float 0x7FF8000000000000, float 0x7FF8000000000000, float 0x7FF8000000000000>
;
%c = fadd <3 x float> <float undef, float 42.0, float undef>, undef
ret <3 x float> %c
}
define <3 x float> @fadd_commute() {
; CHECK-LABEL: @fadd_commute(
; CHECK-NEXT: ret <3 x float> <float 0x7FF8000000000000, float 0x7FF8000000000000, float 0x7FF8000000000000>
;
%c = fadd <3 x float> undef, <float -42.0, float 42.0, float undef>
ret <3 x float> %c
}