mirror of
https://github.com/RPCS3/llvm-mirror.git
synced 2024-11-23 11:13:28 +01:00
b375a0476c
Summary: This patch adds support for xors of splat vectors. Reviewers: mcrosier Reviewed By: mcrosier Subscribers: llvm-commits Differential Revision: https://reviews.llvm.org/D34354 llvm-svn: 305925
295 lines
8.0 KiB
LLVM
295 lines
8.0 KiB
LLVM
;RUN: opt -S -reassociate < %s | FileCheck %s
|
|
|
|
; ==========================================================================
|
|
;
|
|
; Xor reassociation general cases
|
|
;
|
|
; ==========================================================================
|
|
|
|
; (x | c1) ^ (x | c2) => (x & c3) ^ c3, where c3 = c1^c2
|
|
;
|
|
define i32 @xor1(i32 %x) {
|
|
%or = or i32 %x, 123
|
|
%or1 = or i32 %x, 456
|
|
%xor = xor i32 %or, %or1
|
|
ret i32 %xor
|
|
|
|
;CHECK-LABEL: @xor1(
|
|
;CHECK: %and.ra = and i32 %x, 435
|
|
;CHECK: %xor = xor i32 %and.ra, 435
|
|
}
|
|
|
|
; (x | c1) ^ (x | c2) => (x & c3) ^ c3, where c3 = c1^c2
|
|
;
|
|
define <2 x i32> @xor1_vec(<2 x i32> %x) {
|
|
%or = or <2 x i32> %x, <i32 123, i32 123>
|
|
%or1 = or <2 x i32> %x, <i32 456, i32 456>
|
|
%xor = xor <2 x i32> %or, %or1
|
|
ret <2 x i32> %xor
|
|
|
|
;CHECK-LABEL: @xor1_vec(
|
|
;CHECK: %and.ra = and <2 x i32> %x, <i32 435, i32 435>
|
|
;CHECK: %xor = xor <2 x i32> %and.ra, <i32 435, i32 435>
|
|
}
|
|
|
|
; Test rule : (x & c1) ^ (x & c2) = (x & (c1^c2))
|
|
; Real testing case : (x & 123) ^ y ^ (x & 345) => (x & 435) ^ y
|
|
define i32 @xor2(i32 %x, i32 %y) {
|
|
%and = and i32 %x, 123
|
|
%xor = xor i32 %and, %y
|
|
%and1 = and i32 %x, 456
|
|
%xor2 = xor i32 %xor, %and1
|
|
ret i32 %xor2
|
|
|
|
;CHECK-LABEL: @xor2(
|
|
;CHECK: %and.ra = and i32 %x, 435
|
|
;CHECK: %xor2 = xor i32 %and.ra, %y
|
|
}
|
|
|
|
; Test rule : (x & c1) ^ (x & c2) = (x & (c1^c2))
|
|
; Real testing case : (x & 123) ^ y ^ (x & 345) => (x & 435) ^ y
|
|
define <2 x i32> @xor2_vec(<2 x i32> %x, <2 x i32> %y) {
|
|
%and = and <2 x i32> %x, <i32 123, i32 123>
|
|
%xor = xor <2 x i32> %and, %y
|
|
%and1 = and <2 x i32> %x, <i32 456, i32 456>
|
|
%xor2 = xor <2 x i32> %xor, %and1
|
|
ret <2 x i32> %xor2
|
|
|
|
;CHECK-LABEL: @xor2_vec(
|
|
;CHECK: %and.ra = and <2 x i32> %x, <i32 435, i32 435>
|
|
;CHECK: %xor2 = xor <2 x i32> %and.ra, %y
|
|
}
|
|
|
|
; Test rule: (x | c1) ^ (x & c2) = (x & c3) ^ c1, where c3 = ~c1 ^ c2
|
|
; c3 = ~c1 ^ c2
|
|
define i32 @xor3(i32 %x, i32 %y) {
|
|
%or = or i32 %x, 123
|
|
%xor = xor i32 %or, %y
|
|
%and = and i32 %x, 456
|
|
%xor1 = xor i32 %xor, %and
|
|
ret i32 %xor1
|
|
|
|
;CHECK-LABEL: @xor3(
|
|
;CHECK: %and.ra = and i32 %x, -436
|
|
;CHECK: %xor = xor i32 %y, 123
|
|
;CHECK: %xor1 = xor i32 %xor, %and.ra
|
|
}
|
|
|
|
; Test rule: (x | c1) ^ (x & c2) = (x & c3) ^ c1, where c3 = ~c1 ^ c2
|
|
; c3 = ~c1 ^ c2
|
|
define <2 x i32> @xor3_vec(<2 x i32> %x, <2 x i32> %y) {
|
|
%or = or <2 x i32> %x, <i32 123, i32 123>
|
|
%xor = xor <2 x i32> %or, %y
|
|
%and = and <2 x i32> %x, <i32 456, i32 456>
|
|
%xor1 = xor <2 x i32> %xor, %and
|
|
ret <2 x i32> %xor1
|
|
|
|
;CHECK-LABEL: @xor3_vec(
|
|
;CHECK: %and.ra = and <2 x i32> %x, <i32 -436, i32 -436>
|
|
;CHECK: %xor = xor <2 x i32> %y, <i32 123, i32 123>
|
|
;CHECK: %xor1 = xor <2 x i32> %xor, %and.ra
|
|
}
|
|
|
|
; Test rule: (x | c1) ^ c2 = (x & ~c1) ^ (c1 ^ c2)
|
|
define i32 @xor4(i32 %x, i32 %y) {
|
|
%and = and i32 %x, -124
|
|
%xor = xor i32 %y, 435
|
|
%xor1 = xor i32 %xor, %and
|
|
ret i32 %xor1
|
|
; CHECK-LABEL: @xor4(
|
|
; CHECK: %and = and i32 %x, -124
|
|
; CHECK: %xor = xor i32 %y, 435
|
|
; CHECK: %xor1 = xor i32 %xor, %and
|
|
}
|
|
|
|
; Test rule: (x | c1) ^ c2 = (x & ~c1) ^ (c1 ^ c2)
|
|
define <2 x i32> @xor4_vec(<2 x i32> %x, <2 x i32> %y) {
|
|
%and = and <2 x i32> %x, <i32 -124, i32 -124>
|
|
%xor = xor <2 x i32> %y, <i32 435, i32 435>
|
|
%xor1 = xor <2 x i32> %xor, %and
|
|
ret <2 x i32> %xor1
|
|
; CHECK-LABEL: @xor4_vec(
|
|
; CHECK: %and = and <2 x i32> %x, <i32 -124, i32 -124>
|
|
; CHECK: %xor = xor <2 x i32> %y, <i32 435, i32 435>
|
|
; CHECK: %xor1 = xor <2 x i32> %xor, %and
|
|
}
|
|
|
|
; ==========================================================================
|
|
;
|
|
; Xor reassociation special cases
|
|
;
|
|
; ==========================================================================
|
|
|
|
; Special case1:
|
|
; (x | c1) ^ (x & ~c1) = c1
|
|
define i32 @xor_special1(i32 %x, i32 %y) {
|
|
%or = or i32 %x, 123
|
|
%xor = xor i32 %or, %y
|
|
%and = and i32 %x, -124
|
|
%xor1 = xor i32 %xor, %and
|
|
ret i32 %xor1
|
|
; CHECK-LABEL: @xor_special1(
|
|
; CHECK: %xor1 = xor i32 %y, 123
|
|
; CHECK: ret i32 %xor1
|
|
}
|
|
|
|
; Special case1:
|
|
; (x | c1) ^ (x & ~c1) = c1
|
|
define <2 x i32> @xor_special1_vec(<2 x i32> %x, <2 x i32> %y) {
|
|
%or = or <2 x i32> %x, <i32 123, i32 123>
|
|
%xor = xor <2 x i32> %or, %y
|
|
%and = and <2 x i32> %x, <i32 -124, i32 -124>
|
|
%xor1 = xor <2 x i32> %xor, %and
|
|
ret <2 x i32> %xor1
|
|
; CHECK-LABEL: @xor_special1_vec(
|
|
; CHECK: %xor1 = xor <2 x i32> %y, <i32 123, i32 123>
|
|
; CHECK: ret <2 x i32> %xor1
|
|
}
|
|
|
|
; Special case1:
|
|
; (x | c1) ^ (x & c1) = x ^ c1
|
|
define i32 @xor_special2(i32 %x, i32 %y) {
|
|
%or = or i32 %x, 123
|
|
%xor = xor i32 %or, %y
|
|
%and = and i32 %x, 123
|
|
%xor1 = xor i32 %xor, %and
|
|
ret i32 %xor1
|
|
; CHECK-LABEL: @xor_special2(
|
|
; CHECK: %xor = xor i32 %x, 123
|
|
; CHECK: %xor1 = xor i32 %xor, %y
|
|
; CHECK: ret i32 %xor1
|
|
}
|
|
|
|
; Special case1:
|
|
; (x | c1) ^ (x & c1) = x ^ c1
|
|
define <2 x i32> @xor_special2_vec(<2 x i32> %x, <2 x i32> %y) {
|
|
%or = or <2 x i32> %x, <i32 123, i32 123>
|
|
%xor = xor <2 x i32> %or, %y
|
|
%and = and <2 x i32> %x, <i32 123, i32 123>
|
|
%xor1 = xor <2 x i32> %xor, %and
|
|
ret <2 x i32> %xor1
|
|
; CHECK-LABEL: @xor_special2_vec(
|
|
; CHECK: %xor = xor <2 x i32> %x, <i32 123, i32 123>
|
|
; CHECK: %xor1 = xor <2 x i32> %xor, %y
|
|
; CHECK: ret <2 x i32> %xor1
|
|
}
|
|
|
|
; (x | c1) ^ (x | c1) => 0
|
|
define i32 @xor_special3(i32 %x) {
|
|
%or = or i32 %x, 123
|
|
%or1 = or i32 %x, 123
|
|
%xor = xor i32 %or, %or1
|
|
ret i32 %xor
|
|
;CHECK-LABEL: @xor_special3(
|
|
;CHECK: ret i32 0
|
|
}
|
|
|
|
; (x | c1) ^ (x | c1) => 0
|
|
define <2 x i32> @xor_special3_vec(<2 x i32> %x) {
|
|
%or = or <2 x i32> %x, <i32 123, i32 123>
|
|
%or1 = or <2 x i32> %x, <i32 123, i32 123>
|
|
%xor = xor <2 x i32> %or, %or1
|
|
ret <2 x i32> %xor
|
|
;CHECK-LABEL: @xor_special3_vec(
|
|
;CHECK: ret <2 x i32> zeroinitializer
|
|
}
|
|
|
|
; (x & c1) ^ (x & c1) => 0
|
|
define i32 @xor_special4(i32 %x) {
|
|
%or = and i32 %x, 123
|
|
%or1 = and i32 123, %x
|
|
%xor = xor i32 %or, %or1
|
|
ret i32 %xor
|
|
;CHECK-LABEL: @xor_special4(
|
|
;CHECK: ret i32 0
|
|
}
|
|
|
|
; (x & c1) ^ (x & c1) => 0
|
|
define <2 x i32> @xor_special4_vec(<2 x i32> %x) {
|
|
%or = and <2 x i32> %x, <i32 123, i32 123>
|
|
%or1 = and <2 x i32> <i32 123, i32 123>, %x
|
|
%xor = xor <2 x i32> %or, %or1
|
|
ret <2 x i32> %xor
|
|
;CHECK-LABEL: @xor_special4_vec(
|
|
;CHECK: ret <2 x i32> zeroinitializer
|
|
}
|
|
|
|
; ==========================================================================
|
|
;
|
|
; Xor reassociation curtail code size
|
|
;
|
|
; ==========================================================================
|
|
|
|
; (x | c1) ^ (x | c2) => (x & c3) ^ c3
|
|
; is enabled if one of operands has multiple uses
|
|
;
|
|
define i32 @xor_ra_size1(i32 %x) {
|
|
%or = or i32 %x, 123
|
|
%or1 = or i32 %x, 456
|
|
%xor = xor i32 %or, %or1
|
|
|
|
%add = add i32 %xor, %or
|
|
ret i32 %add
|
|
;CHECK-LABEL: @xor_ra_size1(
|
|
;CHECK: %xor = xor i32 %and.ra, 435
|
|
}
|
|
|
|
; (x | c1) ^ (x | c2) => (x & c3) ^ c3
|
|
; is disenabled if bothf operands has multiple uses.
|
|
;
|
|
define i32 @xor_ra_size2(i32 %x) {
|
|
%or = or i32 %x, 123
|
|
%or1 = or i32 %x, 456
|
|
%xor = xor i32 %or, %or1
|
|
|
|
%add = add i32 %xor, %or
|
|
%add2 = add i32 %add, %or1
|
|
ret i32 %add2
|
|
|
|
;CHECK-LABEL: @xor_ra_size2(
|
|
;CHECK: %or1 = or i32 %x, 456
|
|
;CHECK: %xor = xor i32 %or, %or1
|
|
}
|
|
|
|
|
|
; ==========================================================================
|
|
;
|
|
; Xor reassociation bugs
|
|
;
|
|
; ==========================================================================
|
|
|
|
@xor_bug1_data = external global <{}>, align 4
|
|
define void @xor_bug1() {
|
|
%1 = ptrtoint i32* undef to i64
|
|
%2 = xor i64 %1, ptrtoint (<{}>* @xor_bug1_data to i64)
|
|
%3 = and i64 undef, %2
|
|
ret void
|
|
}
|
|
|
|
; The bug was that when the compiler optimize "(x | c1)" ^ "(x & c2)", it may
|
|
; swap the two xor-subexpressions if they are not in canoninical order; however,
|
|
; when optimizer swaps two sub-expressions, if forgot to swap the cached value
|
|
; of c1 and c2 accordingly, hence cause the problem.
|
|
;
|
|
define i32 @xor_bug2(i32, i32, i32, i32) {
|
|
%5 = mul i32 %0, 123
|
|
%6 = add i32 %2, 24
|
|
%7 = add i32 %1, 8
|
|
%8 = and i32 %1, 3456789
|
|
%9 = or i32 %8, 4567890
|
|
%10 = and i32 %1, 543210987
|
|
%11 = or i32 %1, 891034567
|
|
%12 = and i32 %2, 255
|
|
%13 = xor i32 %9, %10
|
|
%14 = xor i32 %11, %13
|
|
%15 = xor i32 %5, %14
|
|
%16 = and i32 %3, 255
|
|
%17 = xor i32 %16, 42
|
|
%18 = add i32 %6, %7
|
|
%19 = add i32 %18, %12
|
|
%20 = add i32 %19, %15
|
|
ret i32 %20
|
|
;CHECK-LABEL: @xor_bug2(
|
|
;CHECK: xor i32 %5, 891034567
|
|
}
|