forked from OSchip/llvm-project
190 lines
5.0 KiB
LLVM
190 lines
5.0 KiB
LLVM
; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
|
|
; RUN: opt %s -instcombine -S | FileCheck %s
|
|
|
|
; Should fold
|
|
; (%y ^ -1) u>= %x
|
|
; to
|
|
; @llvm.uadd.with.overflow(%x, %y) + extractvalue + not
|
|
;
|
|
; All tests here have extra uses, to ensure that the pattern isn't perturbed.
|
|
|
|
declare void @use8(i8)
|
|
declare void @use2x8(<2 x i8>)
|
|
|
|
define i1 @t0_basic(i8 %x, i8 %y) {
|
|
; CHECK-LABEL: @t0_basic(
|
|
; CHECK-NEXT: [[T0:%.*]] = xor i8 [[Y:%.*]], -1
|
|
; CHECK-NEXT: call void @use8(i8 [[T0]])
|
|
; CHECK-NEXT: [[R:%.*]] = icmp uge i8 [[T0]], [[X:%.*]]
|
|
; CHECK-NEXT: ret i1 [[R]]
|
|
;
|
|
%t0 = xor i8 %y, -1
|
|
call void @use8(i8 %t0)
|
|
%r = icmp uge i8 %t0, %x
|
|
ret i1 %r
|
|
}
|
|
|
|
define <2 x i1> @t1_vec(<2 x i8> %x, <2 x i8> %y) {
|
|
; CHECK-LABEL: @t1_vec(
|
|
; CHECK-NEXT: [[T0:%.*]] = xor <2 x i8> [[Y:%.*]], <i8 -1, i8 -1>
|
|
; CHECK-NEXT: call void @use2x8(<2 x i8> [[T0]])
|
|
; CHECK-NEXT: [[R:%.*]] = icmp uge <2 x i8> [[T0]], [[X:%.*]]
|
|
; CHECK-NEXT: ret <2 x i1> [[R]]
|
|
;
|
|
%t0 = xor <2 x i8> %y, <i8 -1, i8 -1>
|
|
call void @use2x8(<2 x i8> %t0)
|
|
%r = icmp uge <2 x i8> %t0, %x
|
|
ret <2 x i1> %r
|
|
}
|
|
|
|
; Commutativity
|
|
|
|
declare i8 @gen8()
|
|
|
|
define i1 @t2_commutative(i8 %y) {
|
|
; CHECK-LABEL: @t2_commutative(
|
|
; CHECK-NEXT: [[T0:%.*]] = xor i8 [[Y:%.*]], -1
|
|
; CHECK-NEXT: call void @use8(i8 [[T0]])
|
|
; CHECK-NEXT: [[X:%.*]] = call i8 @gen8()
|
|
; CHECK-NEXT: [[R:%.*]] = icmp ule i8 [[X]], [[T0]]
|
|
; CHECK-NEXT: ret i1 [[R]]
|
|
;
|
|
%t0 = xor i8 %y, -1
|
|
call void @use8(i8 %t0)
|
|
%x = call i8 @gen8()
|
|
%r = icmp ule i8 %x, %t0 ; swapped
|
|
ret i1 %r
|
|
}
|
|
|
|
; Extra-use tests
|
|
|
|
define i1 @t3_no_extrause(i8 %x, i8 %y) {
|
|
; CHECK-LABEL: @t3_no_extrause(
|
|
; CHECK-NEXT: [[T0:%.*]] = xor i8 [[Y:%.*]], -1
|
|
; CHECK-NEXT: [[R:%.*]] = icmp uge i8 [[T0]], [[X:%.*]]
|
|
; CHECK-NEXT: ret i1 [[R]]
|
|
;
|
|
%t0 = xor i8 %y, -1
|
|
%r = icmp uge i8 %t0, %x
|
|
ret i1 %r
|
|
}
|
|
|
|
; Negative tests
|
|
|
|
define i1 @n4_wrong_pred0(i8 %x, i8 %y) {
|
|
; CHECK-LABEL: @n4_wrong_pred0(
|
|
; CHECK-NEXT: [[T0:%.*]] = xor i8 [[Y:%.*]], -1
|
|
; CHECK-NEXT: call void @use8(i8 [[T0]])
|
|
; CHECK-NEXT: [[R:%.*]] = icmp ule i8 [[T0]], [[X:%.*]]
|
|
; CHECK-NEXT: ret i1 [[R]]
|
|
;
|
|
%t0 = xor i8 %y, -1
|
|
call void @use8(i8 %t0)
|
|
%r = icmp ule i8 %t0, %x
|
|
ret i1 %r
|
|
}
|
|
|
|
define i1 @n5_wrong_pred1(i8 %x, i8 %y) {
|
|
; CHECK-LABEL: @n5_wrong_pred1(
|
|
; CHECK-NEXT: [[T0:%.*]] = xor i8 [[Y:%.*]], -1
|
|
; CHECK-NEXT: call void @use8(i8 [[T0]])
|
|
; CHECK-NEXT: [[R:%.*]] = icmp ugt i8 [[T0]], [[X:%.*]]
|
|
; CHECK-NEXT: ret i1 [[R]]
|
|
;
|
|
%t0 = xor i8 %y, -1
|
|
call void @use8(i8 %t0)
|
|
%r = icmp ugt i8 %t0, %x
|
|
ret i1 %r
|
|
}
|
|
|
|
define i1 @n6_wrong_pred2(i8 %x, i8 %y) {
|
|
; CHECK-LABEL: @n6_wrong_pred2(
|
|
; CHECK-NEXT: [[T0:%.*]] = xor i8 [[Y:%.*]], -1
|
|
; CHECK-NEXT: call void @use8(i8 [[T0]])
|
|
; CHECK-NEXT: [[R:%.*]] = icmp eq i8 [[T0]], [[X:%.*]]
|
|
; CHECK-NEXT: ret i1 [[R]]
|
|
;
|
|
%t0 = xor i8 %y, -1
|
|
call void @use8(i8 %t0)
|
|
%r = icmp eq i8 %t0, %x
|
|
ret i1 %r
|
|
}
|
|
|
|
define i1 @n7_wrong_pred3(i8 %x, i8 %y) {
|
|
; CHECK-LABEL: @n7_wrong_pred3(
|
|
; CHECK-NEXT: [[T0:%.*]] = xor i8 [[Y:%.*]], -1
|
|
; CHECK-NEXT: call void @use8(i8 [[T0]])
|
|
; CHECK-NEXT: [[R:%.*]] = icmp ne i8 [[T0]], [[X:%.*]]
|
|
; CHECK-NEXT: ret i1 [[R]]
|
|
;
|
|
%t0 = xor i8 %y, -1
|
|
call void @use8(i8 %t0)
|
|
%r = icmp ne i8 %t0, %x
|
|
ret i1 %r
|
|
}
|
|
|
|
define i1 @n8_wrong_pred4(i8 %x, i8 %y) {
|
|
; CHECK-LABEL: @n8_wrong_pred4(
|
|
; CHECK-NEXT: [[T0:%.*]] = xor i8 [[Y:%.*]], -1
|
|
; CHECK-NEXT: call void @use8(i8 [[T0]])
|
|
; CHECK-NEXT: [[R:%.*]] = icmp slt i8 [[T0]], [[X:%.*]]
|
|
; CHECK-NEXT: ret i1 [[R]]
|
|
;
|
|
%t0 = xor i8 %y, -1
|
|
call void @use8(i8 %t0)
|
|
%r = icmp slt i8 %t0, %x
|
|
ret i1 %r
|
|
}
|
|
|
|
define i1 @n9_wrong_pred5(i8 %x, i8 %y) {
|
|
; CHECK-LABEL: @n9_wrong_pred5(
|
|
; CHECK-NEXT: [[T0:%.*]] = xor i8 [[Y:%.*]], -1
|
|
; CHECK-NEXT: call void @use8(i8 [[T0]])
|
|
; CHECK-NEXT: [[R:%.*]] = icmp sle i8 [[T0]], [[X:%.*]]
|
|
; CHECK-NEXT: ret i1 [[R]]
|
|
;
|
|
%t0 = xor i8 %y, -1
|
|
call void @use8(i8 %t0)
|
|
%r = icmp sle i8 %t0, %x
|
|
ret i1 %r
|
|
}
|
|
|
|
define i1 @n10_wrong_pred6(i8 %x, i8 %y) {
|
|
; CHECK-LABEL: @n10_wrong_pred6(
|
|
; CHECK-NEXT: [[T0:%.*]] = xor i8 [[Y:%.*]], -1
|
|
; CHECK-NEXT: call void @use8(i8 [[T0]])
|
|
; CHECK-NEXT: [[R:%.*]] = icmp sgt i8 [[T0]], [[X:%.*]]
|
|
; CHECK-NEXT: ret i1 [[R]]
|
|
;
|
|
%t0 = xor i8 %y, -1
|
|
call void @use8(i8 %t0)
|
|
%r = icmp sgt i8 %t0, %x
|
|
ret i1 %r
|
|
}
|
|
|
|
define i1 @n11_wrong_pred7(i8 %x, i8 %y) {
|
|
; CHECK-LABEL: @n11_wrong_pred7(
|
|
; CHECK-NEXT: [[T0:%.*]] = xor i8 [[Y:%.*]], -1
|
|
; CHECK-NEXT: call void @use8(i8 [[T0]])
|
|
; CHECK-NEXT: [[R:%.*]] = icmp sge i8 [[T0]], [[X:%.*]]
|
|
; CHECK-NEXT: ret i1 [[R]]
|
|
;
|
|
%t0 = xor i8 %y, -1
|
|
call void @use8(i8 %t0)
|
|
%r = icmp sge i8 %t0, %x
|
|
ret i1 %r
|
|
}
|
|
|
|
define <2 x i1> @n12_vec_nonsplat(<2 x i8> %x, <2 x i8> %y) {
|
|
; CHECK-LABEL: @n12_vec_nonsplat(
|
|
; CHECK-NEXT: [[T0:%.*]] = xor <2 x i8> [[Y:%.*]], <i8 -1, i8 -2>
|
|
; CHECK-NEXT: call void @use2x8(<2 x i8> [[T0]])
|
|
; CHECK-NEXT: [[R:%.*]] = icmp uge <2 x i8> [[T0]], [[X:%.*]]
|
|
; CHECK-NEXT: ret <2 x i1> [[R]]
|
|
;
|
|
%t0 = xor <2 x i8> %y, <i8 -1, i8 -2> ; must be -1.
|
|
call void @use2x8(<2 x i8> %t0)
|
|
%r = icmp uge <2 x i8> %t0, %x
|
|
ret <2 x i1> %r
|
|
}
|