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; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
; RUN: opt -passes=ipsccp -S %s | FileCheck %s
declare void @use(i1)
define i1 @freeze_undef_i1() {
; CHECK-LABEL: @freeze_undef_i1(
; CHECK-NEXT: [[FR:%.*]] = freeze i1 undef
; CHECK-NEXT: ret i1 [[FR]]
;
%fr = freeze i1 undef
ret i1 %fr
}
define ptr @freeze_undef_ptr() {
; CHECK-LABEL: @freeze_undef_ptr(
; CHECK-NEXT: [[FR:%.*]] = freeze ptr undef
; CHECK-NEXT: ret ptr [[FR]]
;
%fr = freeze ptr undef
ret ptr %fr
}
define float @freeze_undef_float() {
; CHECK-LABEL: @freeze_undef_float(
; CHECK-NEXT: [[FR:%.*]] = freeze float undef
; CHECK-NEXT: ret float [[FR]]
;
%fr = freeze float undef
ret float %fr
}
define <2 x i32> @freeze_undef_vector() {
; CHECK-LABEL: @freeze_undef_vector(
; CHECK-NEXT: [[FR:%.*]] = freeze <2 x i32> undef
; CHECK-NEXT: ret <2 x i32> [[FR]]
;
%fr = freeze <2 x i32> undef
ret <2 x i32> %fr
}
define i1 @propagate_range_from_and_through_freeze(i32 %x, i32 %y) {
; CHECK-LABEL: @propagate_range_from_and_through_freeze(
; CHECK-NEXT: [[AND:%.*]] = and i32 [[X:%.*]], 3
; CHECK-NEXT: [[AND_FR:%.*]] = freeze i32 [[AND]]
; CHECK-NEXT: [[F_1:%.*]] = icmp eq i32 [[AND_FR]], 100
; CHECK-NEXT: call void @use(i1 [[F_1]])
; CHECK-NEXT: [[T_1:%.*]] = icmp ule i32 [[AND_FR]], 3
; CHECK-NEXT: call void @use(i1 [[T_1]])
; CHECK-NEXT: [[F_2:%.*]] = icmp ugt i32 [[AND_FR]], 3
; CHECK-NEXT: call void @use(i1 [[F_2]])
; CHECK-NEXT: [[C_1:%.*]] = icmp eq i32 [[AND_FR]], [[Y:%.*]]
; CHECK-NEXT: call void @use(i1 [[C_1]])
; CHECK-NEXT: [[R_1:%.*]] = xor i1 [[T_1]], [[F_1]]
; CHECK-NEXT: [[R_2:%.*]] = xor i1 [[R_1]], [[F_2]]
; CHECK-NEXT: [[R_3:%.*]] = xor i1 [[R_2]], [[C_1]]
; CHECK-NEXT: ret i1 [[R_3]]
;
%and = and i32 %x, 3
%and.fr = freeze i32 %and
%f.1 = icmp eq i32 %and.fr, 100
call void @use(i1 %f.1)
%t.1 = icmp ule i32 %and.fr, 3
call void @use(i1 %t.1)
%f.2 = icmp ugt i32 %and.fr, 3
call void @use(i1 %f.2)
%c.1 = icmp eq i32 %and.fr, %y
call void @use(i1 %c.1)
%r.1 = xor i1 %t.1, %f.1
%r.2 = xor i1 %r.1, %f.2
%r.3 = xor i1 %r.2, %c.1
ret i1 %r.3
}
define i1 @range_from_phi_with_undef(i1 %c.1, i1 %c.2) {
; CHECK-LABEL: @range_from_phi_with_undef(
; CHECK-NEXT: br i1 [[C_1:%.*]], label [[TRUE_1:%.*]], label [[FALSE:%.*]]
; CHECK: true.1:
; CHECK-NEXT: br i1 [[C_2:%.*]], label [[TRUE_2:%.*]], label [[EXIT:%.*]]
; CHECK: true.2:
; CHECK-NEXT: br label [[EXIT]]
; CHECK: false:
; CHECK-NEXT: br label [[EXIT]]
; CHECK: exit:
; CHECK-NEXT: [[P:%.*]] = phi i32 [ 10, [[TRUE_1]] ], [ 20, [[TRUE_2]] ], [ undef, [[FALSE]] ]
; CHECK-NEXT: [[P_FR:%.*]] = freeze i32 [[P]]
; CHECK-NEXT: [[T_1:%.*]] = icmp ule i32 [[P_FR]], 20
; CHECK-NEXT: [[T_2:%.*]] = icmp uge i32 [[P_FR]], 10
; CHECK-NEXT: [[RES:%.*]] = xor i1 [[T_1]], [[T_2]]
; CHECK-NEXT: ret i1 [[RES]]
;
br i1 %c.1, label %true.1, label %false
true.1:
br i1 %c.2, label %true.2, label %exit
true.2:
br label %exit
false:
br label %exit
exit:
%p = phi i32 [ 10, %true.1 ], [ 20, %true.2], [ undef, %false ]
%p.fr = freeze i32 %p
%t.1 = icmp ule i32 %p.fr, 20
%t.2 = icmp uge i32 %p.fr, 10
%res = xor i1 %t.1, %t.2
ret i1 %res
}
define i32 @propagate_info_from_predicate_through_freeze(i32 %x) {
; CHECK-LABEL: @propagate_info_from_predicate_through_freeze(
; CHECK-NEXT: [[CMP:%.*]] = icmp eq i32 [[X:%.*]], 10
; CHECK-NEXT: [[X_FR:%.*]] = freeze i32 [[X]]
; CHECK-NEXT: br i1 [[CMP]], label [[THEN:%.*]], label [[ELSE:%.*]]
; CHECK: then:
; CHECK-NEXT: [[ADD_1:%.*]] = add i32 [[X_FR]], 10
; CHECK-NEXT: [[ADD_2:%.*]] = add i32 [[X_FR]], 1
; CHECK-NEXT: ret i32 [[ADD_2]]
; CHECK: else:
; CHECK-NEXT: [[ADD_3:%.*]] = add i32 [[X_FR]], 1
; CHECK-NEXT: ret i32 [[ADD_3]]
;
%cmp = icmp eq i32 %x, 10
%x.fr = freeze i32 %x
br i1 %cmp, label %then, label %else
then:
%add.1 = add i32 %x.fr, %x
%add.2 = add i32 %x.fr, 1
ret i32 %add.2
else:
%add.3 = add i32 %x.fr, 1
ret i32 %add.3
}
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