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|
; NOTE: Assertions have been autogenerated by utils/update_test_checks.py UTC_ARGS: --version 6
; RUN: opt -S -passes="simplifycfg<switch-range-to-icmp>" < %s | FileCheck %s
; Avoid getting stuck in the cycle pr165088_cycle_[1-4].
define void @pr165088_cycle_1(i8 %x) {
; CHECK-LABEL: define void @pr165088_cycle_1(
; CHECK-SAME: i8 [[X:%.*]]) {
; CHECK-NEXT: [[ENTRY:.*:]]
; CHECK-NEXT: [[TMP0:%.*]] = icmp ult i8 [[X]], 2
; CHECK-NEXT: br i1 [[TMP0]], label %[[BLOCK2:.*]], label %[[BLOCK3:.*]]
; CHECK: [[BLOCK1:.*]]:
; CHECK-NEXT: [[COND2:%.*]] = icmp ugt i8 [[X]], 1
; CHECK-NEXT: br i1 [[COND2]], label %[[BLOCK3]], label %[[BLOCK2]]
; CHECK: [[BLOCK2]]:
; CHECK-NEXT: br label %[[BLOCK3]]
; CHECK: [[BLOCK3]]:
; CHECK-NEXT: [[COND3:%.*]] = icmp eq i8 [[X]], 0
; CHECK-NEXT: br i1 [[COND3]], label %[[EXIT:.*]], label %[[BLOCK1]]
; CHECK: [[EXIT]]:
; CHECK-NEXT: ret void
;
entry:
%switch = icmp uge i8 %x, 2
%cond1 = icmp ugt i8 %x, 1
%or.cond = and i1 %switch, %cond1
br i1 %or.cond, label %block3, label %block2
block1:
%cond2 = icmp ugt i8 %x, 1
br i1 %cond2, label %block3, label %block2
block2:
br label %block3
block3:
%cond3 = icmp eq i8 %x, 0
br i1 %cond3, label %exit, label %block1
exit:
ret void
}
define void @pr165088_cycle_2(i8 %x) {
; CHECK-LABEL: define void @pr165088_cycle_2(
; CHECK-SAME: i8 [[X:%.*]]) {
; CHECK-NEXT: [[ENTRY:.*:]]
; CHECK-NEXT: [[SWITCH:%.*]] = icmp ult i8 [[X]], 2
; CHECK-NEXT: br i1 [[SWITCH]], label %[[BLOCK2:.*]], label %[[BLOCK3:.*]]
; CHECK: [[BLOCK1:.*]]:
; CHECK-NEXT: [[COND2:%.*]] = icmp ugt i8 [[X]], 1
; CHECK-NEXT: br i1 [[COND2]], label %[[BLOCK3]], label %[[BLOCK2]]
; CHECK: [[BLOCK2]]:
; CHECK-NEXT: br label %[[BLOCK3]]
; CHECK: [[BLOCK3]]:
; CHECK-NEXT: [[COND3:%.*]] = icmp eq i8 [[X]], 0
; CHECK-NEXT: br i1 [[COND3]], label %[[EXIT:.*]], label %[[BLOCK1]]
; CHECK: [[EXIT]]:
; CHECK-NEXT: ret void
;
entry:
switch i8 %x, label %block3 [
i8 1, label %block2
i8 0, label %block2
]
block1: ; preds = %block3
%cond2 = icmp ugt i8 %x, 1
br i1 %cond2, label %block3, label %block2
block2: ; preds = %entry, %entry, %block1
br label %block3
block3: ; preds = %entry, %block2, %block1
%cond3 = icmp eq i8 %x, 0
br i1 %cond3, label %exit, label %block1
exit: ; preds = %block3
ret void
}
define void @pr165088_cycle_3(i8 %x) {
; CHECK-LABEL: define void @pr165088_cycle_3(
; CHECK-SAME: i8 [[X:%.*]]) {
; CHECK-NEXT: [[ENTRY:.*:]]
; CHECK-NEXT: br label %[[BLOCK3:.*]]
; CHECK: [[BLOCK3]]:
; CHECK-NEXT: [[COND3:%.*]] = icmp eq i8 [[X]], 0
; CHECK-NEXT: br i1 [[COND3]], label %[[EXIT:.*]], label %[[BLOCK3]]
; CHECK: [[EXIT]]:
; CHECK-NEXT: ret void
;
entry:
switch i8 %x, label %block1 [
i8 1, label %block2
i8 0, label %block2
]
block1: ; preds = %entry, %block3
%cond2 = icmp ugt i8 %x, 1
br i1 %cond2, label %block3, label %block2
block2: ; preds = %entry, %entry, %block1
br label %block3
block3: ; preds = %block2, %block1
%cond3 = icmp eq i8 %x, 0
br i1 %cond3, label %exit, label %block1
exit: ; preds = %block3
ret void
}
define void @pr165088_cycle_4(i8 %x) {
; CHECK-LABEL: define void @pr165088_cycle_4(
; CHECK-SAME: i8 [[X:%.*]]) {
; CHECK-NEXT: [[ENTRY:.*:]]
; CHECK-NEXT: [[TMP0:%.*]] = icmp ult i8 [[X]], 2
; CHECK-NEXT: br i1 [[TMP0]], label %[[BLOCK2:.*]], label %[[BLOCK3:.*]]
; CHECK: [[BLOCK1:.*]]:
; CHECK-NEXT: [[COND2_OLD:%.*]] = icmp ugt i8 [[X]], 1
; CHECK-NEXT: br i1 [[COND2_OLD]], label %[[BLOCK3]], label %[[BLOCK2]]
; CHECK: [[BLOCK2]]:
; CHECK-NEXT: br label %[[BLOCK3]]
; CHECK: [[BLOCK3]]:
; CHECK-NEXT: [[COND3:%.*]] = icmp eq i8 [[X]], 0
; CHECK-NEXT: br i1 [[COND3]], label %[[EXIT:.*]], label %[[BLOCK1]]
; CHECK: [[EXIT]]:
; CHECK-NEXT: ret void
;
entry:
%switch = icmp ult i8 %x, 2
br i1 %switch, label %block2, label %block1
block1: ; preds = %entry, %block3
%cond2 = icmp ugt i8 %x, 1
br i1 %cond2, label %block3, label %block2
block2: ; preds = %entry, %block1
br label %block3
block3: ; preds = %block2, %block1
%cond3 = icmp eq i8 %x, 0
br i1 %cond3, label %exit, label %block1
exit: ; preds = %block3
ret void
}
define void @pr165088_original(i8 %x) {
; CHECK-LABEL: define void @pr165088_original(
; CHECK-SAME: i8 [[X:%.*]]) {
; CHECK-NEXT: [[ENTRY:.*:]]
; CHECK-NEXT: [[TMP0:%.*]] = icmp ult i8 [[X]], 2
; CHECK-NEXT: br i1 [[TMP0]], label %[[BLOCK2:.*]], label %[[BLOCK3:.*]]
; CHECK: [[BLOCK1:.*]]:
; CHECK-NEXT: [[COND3_OLD_OLD:%.*]] = icmp ugt i8 [[X]], 1
; CHECK-NEXT: br i1 [[COND3_OLD_OLD]], label %[[BLOCK3]], label %[[BLOCK2]]
; CHECK: [[BLOCK2]]:
; CHECK-NEXT: br label %[[BLOCK3]]
; CHECK: [[BLOCK3]]:
; CHECK-NEXT: [[COND4:%.*]] = icmp eq i8 [[X]], 0
; CHECK-NEXT: br i1 [[COND4]], label %[[EXIT:.*]], label %[[BLOCK1]]
; CHECK: [[EXIT]]:
; CHECK-NEXT: ret void
;
entry:
%cond = icmp ne i8 %x, 0
%cond3 = icmp ne i8 %x, 0
%or.cond = and i1 %cond, %cond3
br i1 %or.cond, label %block3, label %block2
block1: ; preds = %block3
%cond3.old = icmp ugt i8 %x, 1
br i1 %cond3.old, label %block3, label %block2
block2: ; preds = %block1, %entry
br label %block3
block3: ; preds = %block2, %block1, %entry
%cond4 = icmp eq i8 %x, 0
br i1 %cond4, label %exit, label %block1
exit: ; preds = %block3
ret void
}
|
