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clang-p2996/llvm/test/Transforms/SimplifyCFG/branch-fold-three.ll
Roman Lebedev aa2009fe78 [NFCI][SimplifyCFG] Mark all the SimplifyCFG tests that already don't invalidate DomTree as such 
First step after e113317958,
in these tests, DomTree is valid afterwards, so mark them as such,
so that they don't regress.

In further steps, SimplifyCFG transforms shall taught to preserve DomTree,
in as small steps as possible.
2020-12-17 01:03:49 +03:00

260 lines
7.6 KiB
LLVM
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; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
; RUN: opt < %s -simplifycfg -simplifycfg-require-and-preserve-domtree=1 -S | FileCheck %s
; s >= t, s != t, s <= t
define void @foo1(i32 %s, i32 %t) {
; CHECK-LABEL: @foo1(
; CHECK-NEXT: entry:
; CHECK-NEXT: [[CMP:%.*]] = icmp sge i32 [[S:%.*]], [[T:%.*]]
; CHECK-NEXT: br i1 [[CMP]], label [[IF_THEN:%.*]], label [[IF_END6:%.*]]
; CHECK: if.then:
; CHECK-NEXT: call void @bar1(i32 [[S]], i32 [[T]])
; CHECK-NEXT: [[CMP1:%.*]] = icmp ne i32 [[S]], [[T]]
; CHECK-NEXT: br i1 [[CMP1]], label [[IF_THEN2:%.*]], label [[IF_END6]]
; CHECK: if.then2:
; CHECK-NEXT: call void @bar2(i32 [[S]], i32 [[T]])
; CHECK-NEXT: [[CMP3:%.*]] = icmp sle i32 [[S]], [[T]]
; CHECK-NEXT: br i1 [[CMP3]], label [[IF_THEN4:%.*]], label [[IF_END6]]
; CHECK: if.then4:
; CHECK-NEXT: call void @bar3(i32 [[S]], i32 [[T]])
; CHECK-NEXT: br label [[IF_END6]]
; CHECK: if.end6:
; CHECK-NEXT: ret void
;
entry:
%cmp = icmp sge i32 %s, %t
br i1 %cmp, label %if.then, label %if.end6
if.then:
call void @bar1(i32 %s, i32 %t)
%cmp1 = icmp ne i32 %s, %t
br i1 %cmp1, label %if.then2, label %if.end6
if.then2:
call void @bar2(i32 %s, i32 %t)
%cmp3 = icmp sle i32 %s, %t
br i1 %cmp3, label %if.then4, label %if.end6
if.then4:
call void @bar3(i32 %s, i32 %t)
br label %if.end6
if.end6:
ret void
}
; s != t, s >= t, s <= t
define void @foo11(i32 %s, i32 %t) {
; CHECK-LABEL: @foo11(
; CHECK-NEXT: entry:
; CHECK-NEXT: [[CMP:%.*]] = icmp ne i32 [[S:%.*]], [[T:%.*]]
; CHECK-NEXT: br i1 [[CMP]], label [[IF_THEN:%.*]], label [[IF_END6:%.*]]
; CHECK: if.then:
; CHECK-NEXT: call void @bar1(i32 [[S]], i32 [[T]])
; CHECK-NEXT: [[CMP1:%.*]] = icmp sge i32 [[S]], [[T]]
; CHECK-NEXT: br i1 [[CMP1]], label [[IF_THEN2:%.*]], label [[IF_END6]]
; CHECK: if.then2:
; CHECK-NEXT: call void @bar2(i32 [[S]], i32 [[T]])
; CHECK-NEXT: [[CMP3:%.*]] = icmp sle i32 [[S]], [[T]]
; CHECK-NEXT: br i1 [[CMP3]], label [[IF_THEN4:%.*]], label [[IF_END6]]
; CHECK: if.then4:
; CHECK-NEXT: call void @bar3(i32 [[S]], i32 [[T]])
; CHECK-NEXT: br label [[IF_END6]]
; CHECK: if.end6:
; CHECK-NEXT: ret void
;
entry:
%cmp = icmp ne i32 %s, %t
br i1 %cmp, label %if.then, label %if.end6
if.then:
call void @bar1(i32 %s, i32 %t)
%cmp1 = icmp sge i32 %s, %t
br i1 %cmp1, label %if.then2, label %if.end6
if.then2:
call void @bar2(i32 %s, i32 %t)
%cmp3 = icmp sle i32 %s, %t
br i1 %cmp3, label %if.then4, label %if.end6
if.then4:
call void @bar3(i32 %s, i32 %t)
br label %if.end6
if.end6:
ret void
}
; s >= t, t != s, s <= t
define void @foo2(i32 %s, i32 %t) {
; CHECK-LABEL: @foo2(
; CHECK-NEXT: entry:
; CHECK-NEXT: [[CMP:%.*]] = icmp sge i32 [[S:%.*]], [[T:%.*]]
; CHECK-NEXT: br i1 [[CMP]], label [[IF_THEN:%.*]], label [[IF_END6:%.*]]
; CHECK: if.then:
; CHECK-NEXT: call void @bar1(i32 [[S]], i32 [[T]])
; CHECK-NEXT: [[CMP1:%.*]] = icmp ne i32 [[T]], [[S]]
; CHECK-NEXT: br i1 [[CMP1]], label [[IF_THEN2:%.*]], label [[IF_END6]]
; CHECK: if.then2:
; CHECK-NEXT: call void @bar2(i32 [[S]], i32 [[T]])
; CHECK-NEXT: [[CMP3:%.*]] = icmp sle i32 [[S]], [[T]]
; CHECK-NEXT: br i1 [[CMP3]], label [[IF_THEN4:%.*]], label [[IF_END6]]
; CHECK: if.then4:
; CHECK-NEXT: call void @bar3(i32 [[S]], i32 [[T]])
; CHECK-NEXT: br label [[IF_END6]]
; CHECK: if.end6:
; CHECK-NEXT: ret void
;
entry:
%cmp = icmp sge i32 %s, %t
br i1 %cmp, label %if.then, label %if.end6
if.then:
call void @bar1(i32 %s, i32 %t)
%cmp1 = icmp ne i32 %t, %s
br i1 %cmp1, label %if.then2, label %if.end6
if.then2:
call void @bar2(i32 %s, i32 %t)
%cmp3 = icmp sle i32 %s, %t
br i1 %cmp3, label %if.then4, label %if.end6
if.then4:
call void @bar3(i32 %s, i32 %t)
br label %if.end6
if.end6:
ret void
}
; s != t, t <= s, s <= t
define void @foo21(i32 %s, i32 %t) {
; CHECK-LABEL: @foo21(
; CHECK-NEXT: entry:
; CHECK-NEXT: [[CMP:%.*]] = icmp ne i32 [[S:%.*]], [[T:%.*]]
; CHECK-NEXT: br i1 [[CMP]], label [[IF_THEN:%.*]], label [[IF_END6:%.*]]
; CHECK: if.then:
; CHECK-NEXT: call void @bar1(i32 [[S]], i32 [[T]])
; CHECK-NEXT: [[CMP1:%.*]] = icmp sle i32 [[T]], [[S]]
; CHECK-NEXT: br i1 [[CMP1]], label [[IF_THEN2:%.*]], label [[IF_END6]]
; CHECK: if.then2:
; CHECK-NEXT: call void @bar2(i32 [[S]], i32 [[T]])
; CHECK-NEXT: [[CMP3:%.*]] = icmp sle i32 [[S]], [[T]]
; CHECK-NEXT: br i1 [[CMP3]], label [[IF_THEN4:%.*]], label [[IF_END6]]
; CHECK: if.then4:
; CHECK-NEXT: call void @bar3(i32 [[S]], i32 [[T]])
; CHECK-NEXT: br label [[IF_END6]]
; CHECK: if.end6:
; CHECK-NEXT: ret void
;
entry:
%cmp = icmp ne i32 %s, %t
br i1 %cmp, label %if.then, label %if.end6
if.then:
call void @bar1(i32 %s, i32 %t)
%cmp1 = icmp sle i32 %t, %s
br i1 %cmp1, label %if.then2, label %if.end6
if.then2:
call void @bar2(i32 %s, i32 %t)
%cmp3 = icmp sle i32 %s, %t
br i1 %cmp3, label %if.then4, label %if.end6
if.then4:
call void @bar3(i32 %s, i32 %t)
br label %if.end6
if.end6:
ret void
}
; t <= s, t != s, s <= t
define void @foo3(i32 %s, i32 %t) {
; CHECK-LABEL: @foo3(
; CHECK-NEXT: entry:
; CHECK-NEXT: [[CMP:%.*]] = icmp sle i32 [[T:%.*]], [[S:%.*]]
; CHECK-NEXT: br i1 [[CMP]], label [[IF_THEN:%.*]], label [[IF_END6:%.*]]
; CHECK: if.then:
; CHECK-NEXT: call void @bar1(i32 [[S]], i32 [[T]])
; CHECK-NEXT: [[CMP1:%.*]] = icmp ne i32 [[T]], [[S]]
; CHECK-NEXT: br i1 [[CMP1]], label [[IF_THEN2:%.*]], label [[IF_END6]]
; CHECK: if.then2:
; CHECK-NEXT: call void @bar2(i32 [[S]], i32 [[T]])
; CHECK-NEXT: [[CMP3:%.*]] = icmp sle i32 [[S]], [[T]]
; CHECK-NEXT: br i1 [[CMP3]], label [[IF_THEN4:%.*]], label [[IF_END6]]
; CHECK: if.then4:
; CHECK-NEXT: call void @bar3(i32 [[S]], i32 [[T]])
; CHECK-NEXT: br label [[IF_END6]]
; CHECK: if.end6:
; CHECK-NEXT: ret void
;
entry:
%cmp = icmp sle i32 %t, %s
br i1 %cmp, label %if.then, label %if.end6
if.then:
call void @bar1(i32 %s, i32 %t)
%cmp1 = icmp ne i32 %t, %s
br i1 %cmp1, label %if.then2, label %if.end6
if.then2:
call void @bar2(i32 %s, i32 %t)
%cmp3 = icmp sle i32 %s, %t
br i1 %cmp3, label %if.then4, label %if.end6
if.then4:
call void @bar3(i32 %s, i32 %t)
br label %if.end6
if.end6:
ret void
}
; t != s, t <= s, s <= t
define void @foo31(i32 %s, i32 %t) {
; CHECK-LABEL: @foo31(
; CHECK-NEXT: entry:
; CHECK-NEXT: [[CMP:%.*]] = icmp ne i32 [[T:%.*]], [[S:%.*]]
; CHECK-NEXT: br i1 [[CMP]], label [[IF_THEN:%.*]], label [[IF_END6:%.*]]
; CHECK: if.then:
; CHECK-NEXT: call void @bar1(i32 [[S]], i32 [[T]])
; CHECK-NEXT: [[CMP1:%.*]] = icmp sle i32 [[T]], [[S]]
; CHECK-NEXT: br i1 [[CMP1]], label [[IF_THEN2:%.*]], label [[IF_END6]]
; CHECK: if.then2:
; CHECK-NEXT: call void @bar2(i32 [[S]], i32 [[T]])
; CHECK-NEXT: [[CMP3:%.*]] = icmp sle i32 [[S]], [[T]]
; CHECK-NEXT: br i1 [[CMP3]], label [[IF_THEN4:%.*]], label [[IF_END6]]
; CHECK: if.then4:
; CHECK-NEXT: call void @bar3(i32 [[S]], i32 [[T]])
; CHECK-NEXT: br label [[IF_END6]]
; CHECK: if.end6:
; CHECK-NEXT: ret void
;
entry:
%cmp = icmp ne i32 %t, %s
br i1 %cmp, label %if.then, label %if.end6
if.then:
call void @bar1(i32 %s, i32 %t)
%cmp1 = icmp sle i32 %t, %s
br i1 %cmp1, label %if.then2, label %if.end6
if.then2:
call void @bar2(i32 %s, i32 %t)
%cmp3 = icmp sle i32 %s, %t
br i1 %cmp3, label %if.then4, label %if.end6
if.then4:
call void @bar3(i32 %s, i32 %t)
br label %if.end6
if.end6:
ret void
}
declare void @bar1(i32, i32)
declare void @bar2(i32, i32)
declare void @bar3(i32, i32)
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