forked from OSchip/llvm-project
71 lines
1.3 KiB
LLVM
71 lines
1.3 KiB
LLVM
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; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
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; RUN: opt -tut-simplifycfg -tut-simplifycfg-version=v1 -S < %s | FileCheck %s
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; RUN: opt -tut-simplifycfg -tut-simplifycfg-version=v2 -S < %s | FileCheck %s
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; RUN: opt -tut-simplifycfg -tut-simplifycfg-version=v3 -S < %s | FileCheck %s
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define i32 @phi_cond_branch_eliminated() {
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; CHECK-LABEL: @phi_cond_branch_eliminated(
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; CHECK-NEXT: entry:
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; CHECK-NEXT: ret i32 20
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;
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entry:
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br i1 true, label %bb.2, label %bb.3
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bb.2:
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br label %bb.3
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bb.3:
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%ret = phi i32 [ 10, %entry ], [ 20, %bb.2 ]
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ret i32 %ret
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}
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define i32 @phi_removed() {
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; CHECK-LABEL: @phi_removed(
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; CHECK-NEXT: entry:
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; CHECK-NEXT: br label [[BB_3:%.*]]
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; CHECK: bb.3:
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; CHECK-NEXT: ret i32 0
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;
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entry:
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br i1 false, label %bb.2, label %bb.3
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bb.2:
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%pv = phi i32 [ 10, %entry ]
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br label %bb.3
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bb.3:
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ret i32 0
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}
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define i32 @phi_in_dead_region() {
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; CHECK-LABEL: @phi_in_dead_region(
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; CHECK-NEXT: entry:
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; CHECK-NEXT: ret i32 1
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;
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entry:
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ret i32 1
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bb.1:
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br i1 true, label %bb.2, label %bb.3
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bb.2:
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br label %bb.3
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bb.3:
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%ret = phi i32 [ 10, %bb.1 ], [ 20, %bb.2 ]
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ret i32 %ret
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}
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define i32 @phi_in_mergable_blocks() {
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; CHECK-LABEL: @phi_in_mergable_blocks(
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; CHECK-NEXT: entry:
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; CHECK-NEXT: ret i32 10
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;
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entry:
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br label %bb.1
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bb.1:
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%pv = phi i32 [ 10, %entry ]
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ret i32 %pv
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}
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