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[SimplifyCFG] add tests for cross block compare folding; NFC
These are the baseline tests for D54827. Patch based on code originally written by: @yinyuefengyi (luo xionghu) Differential Revision: https://reviews.llvm.org/D54994 llvm-svn: 348151
This commit is contained in:
Sanjay Patel
parent
7f522094fd
commit
67ca1a946a
259
test/Transforms/SimplifyCFG/branch-fold-three.ll
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259
test/Transforms/SimplifyCFG/branch-fold-three.ll
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; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
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; RUN: opt < %s -simplifycfg -S | FileCheck %s
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; s >= t, s != t, s <= t
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define void @foo1(i32 %s, i32 %t) {
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; CHECK-LABEL: @foo1(
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; CHECK-NEXT: entry:
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; CHECK-NEXT: [[CMP:%.*]] = icmp sge i32 [[S:%.*]], [[T:%.*]]
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; CHECK-NEXT: br i1 [[CMP]], label [[IF_THEN:%.*]], label [[IF_END6:%.*]]
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; CHECK: if.then:
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; CHECK-NEXT: call void @bar1(i32 [[S]], i32 [[T]])
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; CHECK-NEXT: [[CMP1:%.*]] = icmp ne i32 [[S]], [[T]]
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; CHECK-NEXT: br i1 [[CMP1]], label [[IF_THEN2:%.*]], label [[IF_END6]]
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; CHECK: if.then2:
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; CHECK-NEXT: call void @bar2(i32 [[S]], i32 [[T]])
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; CHECK-NEXT: [[CMP3:%.*]] = icmp sle i32 [[S]], [[T]]
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; CHECK-NEXT: br i1 [[CMP3]], label [[IF_THEN4:%.*]], label [[IF_END6]]
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; CHECK: if.then4:
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; CHECK-NEXT: call void @bar3(i32 [[S]], i32 [[T]])
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; CHECK-NEXT: br label [[IF_END6]]
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; CHECK: if.end6:
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; CHECK-NEXT: ret void
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;
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entry:
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%cmp = icmp sge i32 %s, %t
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br i1 %cmp, label %if.then, label %if.end6
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if.then:
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call void @bar1(i32 %s, i32 %t)
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%cmp1 = icmp ne i32 %s, %t
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br i1 %cmp1, label %if.then2, label %if.end6
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if.then2:
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call void @bar2(i32 %s, i32 %t)
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%cmp3 = icmp sle i32 %s, %t
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br i1 %cmp3, label %if.then4, label %if.end6
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if.then4:
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call void @bar3(i32 %s, i32 %t)
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br label %if.end6
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if.end6:
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ret void
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}
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; s != t, s >= t, s <= t
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define void @foo11(i32 %s, i32 %t) {
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; CHECK-LABEL: @foo11(
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; CHECK-NEXT: entry:
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; CHECK-NEXT: [[CMP:%.*]] = icmp ne i32 [[S:%.*]], [[T:%.*]]
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; CHECK-NEXT: br i1 [[CMP]], label [[IF_THEN:%.*]], label [[IF_END6:%.*]]
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; CHECK: if.then:
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; CHECK-NEXT: call void @bar1(i32 [[S]], i32 [[T]])
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; CHECK-NEXT: [[CMP1:%.*]] = icmp sge i32 [[S]], [[T]]
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; CHECK-NEXT: br i1 [[CMP1]], label [[IF_THEN2:%.*]], label [[IF_END6]]
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; CHECK: if.then2:
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; CHECK-NEXT: call void @bar2(i32 [[S]], i32 [[T]])
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; CHECK-NEXT: [[CMP3:%.*]] = icmp sle i32 [[S]], [[T]]
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; CHECK-NEXT: br i1 [[CMP3]], label [[IF_THEN4:%.*]], label [[IF_END6]]
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; CHECK: if.then4:
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; CHECK-NEXT: call void @bar3(i32 [[S]], i32 [[T]])
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; CHECK-NEXT: br label [[IF_END6]]
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; CHECK: if.end6:
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; CHECK-NEXT: ret void
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;
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entry:
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%cmp = icmp ne i32 %s, %t
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br i1 %cmp, label %if.then, label %if.end6
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if.then:
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call void @bar1(i32 %s, i32 %t)
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%cmp1 = icmp sge i32 %s, %t
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br i1 %cmp1, label %if.then2, label %if.end6
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if.then2:
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call void @bar2(i32 %s, i32 %t)
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%cmp3 = icmp sle i32 %s, %t
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br i1 %cmp3, label %if.then4, label %if.end6
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if.then4:
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call void @bar3(i32 %s, i32 %t)
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br label %if.end6
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if.end6:
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ret void
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}
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; s >= t, t != s, s <= t
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define void @foo2(i32 %s, i32 %t) {
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; CHECK-LABEL: @foo2(
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; CHECK-NEXT: entry:
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; CHECK-NEXT: [[CMP:%.*]] = icmp sge i32 [[S:%.*]], [[T:%.*]]
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; CHECK-NEXT: br i1 [[CMP]], label [[IF_THEN:%.*]], label [[IF_END6:%.*]]
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; CHECK: if.then:
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; CHECK-NEXT: call void @bar1(i32 [[S]], i32 [[T]])
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; CHECK-NEXT: [[CMP1:%.*]] = icmp ne i32 [[T]], [[S]]
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; CHECK-NEXT: br i1 [[CMP1]], label [[IF_THEN2:%.*]], label [[IF_END6]]
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; CHECK: if.then2:
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; CHECK-NEXT: call void @bar2(i32 [[S]], i32 [[T]])
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; CHECK-NEXT: [[CMP3:%.*]] = icmp sle i32 [[S]], [[T]]
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; CHECK-NEXT: br i1 [[CMP3]], label [[IF_THEN4:%.*]], label [[IF_END6]]
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; CHECK: if.then4:
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; CHECK-NEXT: call void @bar3(i32 [[S]], i32 [[T]])
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; CHECK-NEXT: br label [[IF_END6]]
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; CHECK: if.end6:
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; CHECK-NEXT: ret void
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;
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entry:
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%cmp = icmp sge i32 %s, %t
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br i1 %cmp, label %if.then, label %if.end6
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if.then:
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call void @bar1(i32 %s, i32 %t)
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%cmp1 = icmp ne i32 %t, %s
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br i1 %cmp1, label %if.then2, label %if.end6
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if.then2:
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call void @bar2(i32 %s, i32 %t)
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%cmp3 = icmp sle i32 %s, %t
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br i1 %cmp3, label %if.then4, label %if.end6
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if.then4:
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call void @bar3(i32 %s, i32 %t)
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br label %if.end6
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if.end6:
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ret void
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}
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; s != t, t <= s, s <= t
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define void @foo21(i32 %s, i32 %t) {
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; CHECK-LABEL: @foo21(
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; CHECK-NEXT: entry:
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; CHECK-NEXT: [[CMP:%.*]] = icmp ne i32 [[S:%.*]], [[T:%.*]]
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; CHECK-NEXT: br i1 [[CMP]], label [[IF_THEN:%.*]], label [[IF_END6:%.*]]
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; CHECK: if.then:
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; CHECK-NEXT: call void @bar1(i32 [[S]], i32 [[T]])
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; CHECK-NEXT: [[CMP1:%.*]] = icmp sle i32 [[T]], [[S]]
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; CHECK-NEXT: br i1 [[CMP1]], label [[IF_THEN2:%.*]], label [[IF_END6]]
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; CHECK: if.then2:
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; CHECK-NEXT: call void @bar2(i32 [[S]], i32 [[T]])
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; CHECK-NEXT: [[CMP3:%.*]] = icmp sle i32 [[S]], [[T]]
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; CHECK-NEXT: br i1 [[CMP3]], label [[IF_THEN4:%.*]], label [[IF_END6]]
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; CHECK: if.then4:
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; CHECK-NEXT: call void @bar3(i32 [[S]], i32 [[T]])
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; CHECK-NEXT: br label [[IF_END6]]
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; CHECK: if.end6:
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; CHECK-NEXT: ret void
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;
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entry:
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%cmp = icmp ne i32 %s, %t
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br i1 %cmp, label %if.then, label %if.end6
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if.then:
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call void @bar1(i32 %s, i32 %t)
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%cmp1 = icmp sle i32 %t, %s
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br i1 %cmp1, label %if.then2, label %if.end6
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if.then2:
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call void @bar2(i32 %s, i32 %t)
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%cmp3 = icmp sle i32 %s, %t
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br i1 %cmp3, label %if.then4, label %if.end6
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if.then4:
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call void @bar3(i32 %s, i32 %t)
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br label %if.end6
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if.end6:
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ret void
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}
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; t <= s, t != s, s <= t
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define void @foo3(i32 %s, i32 %t) {
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; CHECK-LABEL: @foo3(
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; CHECK-NEXT: entry:
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; CHECK-NEXT: [[CMP:%.*]] = icmp sle i32 [[T:%.*]], [[S:%.*]]
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; CHECK-NEXT: br i1 [[CMP]], label [[IF_THEN:%.*]], label [[IF_END6:%.*]]
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; CHECK: if.then:
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; CHECK-NEXT: call void @bar1(i32 [[S]], i32 [[T]])
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; CHECK-NEXT: [[CMP1:%.*]] = icmp ne i32 [[T]], [[S]]
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; CHECK-NEXT: br i1 [[CMP1]], label [[IF_THEN2:%.*]], label [[IF_END6]]
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; CHECK: if.then2:
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; CHECK-NEXT: call void @bar2(i32 [[S]], i32 [[T]])
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; CHECK-NEXT: [[CMP3:%.*]] = icmp sle i32 [[S]], [[T]]
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; CHECK-NEXT: br i1 [[CMP3]], label [[IF_THEN4:%.*]], label [[IF_END6]]
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; CHECK: if.then4:
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; CHECK-NEXT: call void @bar3(i32 [[S]], i32 [[T]])
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; CHECK-NEXT: br label [[IF_END6]]
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; CHECK: if.end6:
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; CHECK-NEXT: ret void
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;
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entry:
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%cmp = icmp sle i32 %t, %s
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br i1 %cmp, label %if.then, label %if.end6
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if.then:
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call void @bar1(i32 %s, i32 %t)
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%cmp1 = icmp ne i32 %t, %s
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br i1 %cmp1, label %if.then2, label %if.end6
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if.then2:
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call void @bar2(i32 %s, i32 %t)
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%cmp3 = icmp sle i32 %s, %t
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br i1 %cmp3, label %if.then4, label %if.end6
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if.then4:
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call void @bar3(i32 %s, i32 %t)
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br label %if.end6
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if.end6:
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ret void
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}
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; t != s, t <= s, s <= t
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define void @foo31(i32 %s, i32 %t) {
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; CHECK-LABEL: @foo31(
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; CHECK-NEXT: entry:
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; CHECK-NEXT: [[CMP:%.*]] = icmp ne i32 [[T:%.*]], [[S:%.*]]
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; CHECK-NEXT: br i1 [[CMP]], label [[IF_THEN:%.*]], label [[IF_END6:%.*]]
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; CHECK: if.then:
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; CHECK-NEXT: call void @bar1(i32 [[S]], i32 [[T]])
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; CHECK-NEXT: [[CMP1:%.*]] = icmp sle i32 [[T]], [[S]]
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; CHECK-NEXT: br i1 [[CMP1]], label [[IF_THEN2:%.*]], label [[IF_END6]]
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; CHECK: if.then2:
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; CHECK-NEXT: call void @bar2(i32 [[S]], i32 [[T]])
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; CHECK-NEXT: [[CMP3:%.*]] = icmp sle i32 [[S]], [[T]]
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; CHECK-NEXT: br i1 [[CMP3]], label [[IF_THEN4:%.*]], label [[IF_END6]]
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; CHECK: if.then4:
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; CHECK-NEXT: call void @bar3(i32 [[S]], i32 [[T]])
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; CHECK-NEXT: br label [[IF_END6]]
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; CHECK: if.end6:
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; CHECK-NEXT: ret void
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;
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entry:
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%cmp = icmp ne i32 %t, %s
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br i1 %cmp, label %if.then, label %if.end6
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if.then:
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call void @bar1(i32 %s, i32 %t)
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%cmp1 = icmp sle i32 %t, %s
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br i1 %cmp1, label %if.then2, label %if.end6
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if.then2:
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call void @bar2(i32 %s, i32 %t)
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%cmp3 = icmp sle i32 %s, %t
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br i1 %cmp3, label %if.then4, label %if.end6
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if.then4:
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call void @bar3(i32 %s, i32 %t)
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br label %if.end6
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if.end6:
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ret void
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}
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declare void @bar1(i32, i32)
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declare void @bar2(i32, i32)
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declare void @bar3(i32, i32)
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