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TheRock/compiler/amd-llvm/llvm/test/Transforms/LoopDeletion/switch.ll
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derek.holloway 7502bf64a4
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79 lines
1.9 KiB
LLVM

; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
; RUN: opt < %s -passes=loop-deletion -verify-loop-info -S | FileCheck %s
target triple = "x86_64-unknown-linux-gnu"
@G = external global i32
define void @func_1() {
; CHECK-LABEL: @func_1(
; CHECK-NEXT: entry:
; CHECK-NEXT: br label [[LBL_2368:%.*]]
; CHECK: lbl_2368:
; CHECK-NEXT: [[CMP289:%.*]] = icmp slt i32 undef, -5
; CHECK-NEXT: br i1 [[CMP289]], label [[CLEANUP967:%.*]], label [[UNREACHABLE:%.*]]
; CHECK: cleanup967:
; CHECK-NEXT: switch i32 undef, label [[CLEANUP1169:%.*]] [
; CHECK-NEXT: i32 20, label [[CLEANUP967_LBL_2368_CRIT_EDGE:%.*]]
; CHECK-NEXT: ]
; CHECK: cleanup967.lbl_2368_crit_edge:
; CHECK-NEXT: unreachable
; CHECK: cleanup1169:
; CHECK-NEXT: ret void
; CHECK: unreachable:
; CHECK-NEXT: unreachable
;
entry:
br label %lbl_2368
lbl_2368:
%cmp289 = icmp slt i32 undef, -5
br i1 %cmp289, label %cleanup967, label %unreachable
cleanup967:
switch i32 undef, label %cleanup1169 [
i32 20, label %lbl_2368
]
cleanup1169:
ret void
unreachable:
unreachable
}
define void @func_2() {
; CHECK-LABEL: @func_2(
; CHECK-NEXT: entry:
; CHECK-NEXT: br label [[LBL_2368:%.*]]
; CHECK: lbl_2368:
; CHECK-NEXT: br i1 false, label [[CLEANUP967:%.*]], label [[UNREACHABLE:%.*]]
; CHECK: cleanup967:
; CHECK-NEXT: switch i32 undef, label [[CLEANUP1169:%.*]] [
; CHECK-NEXT: i32 20, label [[CLEANUP967_LBL_2368_CRIT_EDGE:%.*]]
; CHECK-NEXT: ]
; CHECK: cleanup967.lbl_2368_crit_edge:
; CHECK-NEXT: unreachable
; CHECK: cleanup1169:
; CHECK-NEXT: ret void
; CHECK: unreachable:
; CHECK-NEXT: unreachable
;
entry:
br label %lbl_2368
lbl_2368:
br i1 false, label %cleanup967, label %unreachable
cleanup967:
switch i32 undef, label %cleanup1169 [
i32 20, label %lbl_2368
]
cleanup1169:
ret void
unreachable:
unreachable
}