5932fcc478
First step in fixing #76772. This PR considers the default branch as a case branch. This will give the unreachable default branch fair consideration.
318 lines
11 KiB
LLVM
318 lines
11 KiB
LLVM
; NOTE: Assertions have been autogenerated by utils/update_test_checks.py UTC_ARGS: --version 4
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; RUN: opt %s -S -passes=inline -inline-threshold=21 | FileCheck %s
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; Check for scenarios without TTI.
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define i64 @foo1(i64 %a) {
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; LOOKUPTABLE-LABEL: define i64 @foo1(
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; LOOKUPTABLE-SAME: i64 [[TMP0:%.*]]) {
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; LOOKUPTABLE-NEXT: switch i64 [[TMP0]], label [[DEFAULT_BRANCH_I:%.*]] [
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; LOOKUPTABLE-NEXT: i64 0, label [[BRANCH_0_I:%.*]]
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; LOOKUPTABLE-NEXT: i64 2, label [[BRANCH_2_I:%.*]]
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; LOOKUPTABLE-NEXT: i64 4, label [[BRANCH_4_I:%.*]]
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; LOOKUPTABLE-NEXT: i64 6, label [[BRANCH_6_I:%.*]]
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; LOOKUPTABLE-NEXT: ]
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; LOOKUPTABLE: branch_0.i:
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; LOOKUPTABLE-NEXT: br label [[BAR1_EXIT:%.*]]
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; LOOKUPTABLE: branch_2.i:
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; LOOKUPTABLE-NEXT: br label [[BAR1_EXIT]]
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; LOOKUPTABLE: branch_4.i:
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; LOOKUPTABLE-NEXT: br label [[BAR1_EXIT]]
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; LOOKUPTABLE: branch_6.i:
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; LOOKUPTABLE-NEXT: br label [[BAR1_EXIT]]
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; LOOKUPTABLE: default_branch.i:
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; LOOKUPTABLE-NEXT: br label [[BAR1_EXIT]]
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; LOOKUPTABLE: bar1.exit:
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; LOOKUPTABLE-NEXT: [[TMP2:%.*]] = phi i64 [ 5, [[BRANCH_0_I]] ], [ 9, [[BRANCH_2_I]] ], [ 2, [[BRANCH_4_I]] ], [ 7, [[BRANCH_6_I]] ], [ 3, [[DEFAULT_BRANCH_I]] ]
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; LOOKUPTABLE-NEXT: ret i64 [[TMP2]]
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;
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; SWITCH-LABEL: define i64 @foo1(
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; SWITCH-SAME: i64 [[TMP0:%.*]]) {
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; SWITCH-NEXT: switch i64 [[TMP0]], label [[DEFAULT_BRANCH_I:%.*]] [
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; SWITCH-NEXT: i64 0, label [[BRANCH_0_I:%.*]]
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; SWITCH-NEXT: i64 2, label [[BRANCH_2_I:%.*]]
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; SWITCH-NEXT: i64 4, label [[BRANCH_4_I:%.*]]
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; SWITCH-NEXT: i64 6, label [[BRANCH_6_I:%.*]]
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; SWITCH-NEXT: ]
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; SWITCH: branch_0.i:
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; SWITCH-NEXT: br label [[BAR1_EXIT:%.*]]
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; SWITCH: branch_2.i:
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; SWITCH-NEXT: br label [[BAR1_EXIT]]
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; SWITCH: branch_4.i:
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; SWITCH-NEXT: br label [[BAR1_EXIT]]
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; SWITCH: branch_6.i:
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; SWITCH-NEXT: br label [[BAR1_EXIT]]
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; SWITCH: default_branch.i:
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; SWITCH-NEXT: br label [[BAR1_EXIT]]
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; SWITCH: bar1.exit:
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; SWITCH-NEXT: [[TMP2:%.*]] = phi i64 [ 5, [[BRANCH_0_I]] ], [ 9, [[BRANCH_2_I]] ], [ 2, [[BRANCH_4_I]] ], [ 7, [[BRANCH_6_I]] ], [ 3, [[DEFAULT_BRANCH_I]] ]
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; SWITCH-NEXT: ret i64 [[TMP2]]
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;
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; CHECK-LABEL: define i64 @foo1(
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; CHECK-SAME: i64 [[A:%.*]]) {
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; CHECK-NEXT: [[B:%.*]] = call i64 @bar1(i64 [[A]])
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; CHECK-NEXT: ret i64 [[B]]
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;
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%b = call i64 @bar1(i64 %a)
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ret i64 %b
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}
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define i64 @foo2(i64 %a) {
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; LOOKUPTABLE-LABEL: define i64 @foo2(
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; LOOKUPTABLE-SAME: i64 [[TMP0:%.*]]) {
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; LOOKUPTABLE-NEXT: switch i64 [[TMP0]], label [[UNREACHABLEDEFAULT_I:%.*]] [
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; LOOKUPTABLE-NEXT: i64 0, label [[BRANCH_0_I:%.*]]
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; LOOKUPTABLE-NEXT: i64 2, label [[BRANCH_2_I:%.*]]
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; LOOKUPTABLE-NEXT: i64 4, label [[BRANCH_4_I:%.*]]
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; LOOKUPTABLE-NEXT: i64 6, label [[BRANCH_6_I:%.*]]
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; LOOKUPTABLE-NEXT: ]
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; LOOKUPTABLE: branch_0.i:
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; LOOKUPTABLE-NEXT: br label [[BAR2_EXIT:%.*]]
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; LOOKUPTABLE: branch_2.i:
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; LOOKUPTABLE-NEXT: br label [[BAR2_EXIT]]
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; LOOKUPTABLE: branch_4.i:
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; LOOKUPTABLE-NEXT: br label [[BAR2_EXIT]]
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; LOOKUPTABLE: branch_6.i:
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; LOOKUPTABLE-NEXT: br label [[BAR2_EXIT]]
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; LOOKUPTABLE: unreachabledefault.i:
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; LOOKUPTABLE-NEXT: unreachable
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; LOOKUPTABLE: bar2.exit:
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; LOOKUPTABLE-NEXT: [[TMP2:%.*]] = phi i64 [ 5, [[BRANCH_0_I]] ], [ 9, [[BRANCH_2_I]] ], [ 2, [[BRANCH_4_I]] ], [ 7, [[BRANCH_6_I]] ]
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; LOOKUPTABLE-NEXT: ret i64 [[TMP2]]
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;
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; SWITCH-LABEL: define i64 @foo2(
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; SWITCH-SAME: i64 [[TMP0:%.*]]) {
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; SWITCH-NEXT: switch i64 [[TMP0]], label [[UNREACHABLEDEFAULT_I:%.*]] [
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; SWITCH-NEXT: i64 0, label [[BRANCH_0_I:%.*]]
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; SWITCH-NEXT: i64 2, label [[BRANCH_2_I:%.*]]
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; SWITCH-NEXT: i64 4, label [[BRANCH_4_I:%.*]]
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; SWITCH-NEXT: i64 6, label [[BRANCH_6_I:%.*]]
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; SWITCH-NEXT: ]
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; SWITCH: branch_0.i:
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; SWITCH-NEXT: br label [[BAR2_EXIT:%.*]]
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; SWITCH: branch_2.i:
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; SWITCH-NEXT: br label [[BAR2_EXIT]]
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; SWITCH: branch_4.i:
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; SWITCH-NEXT: br label [[BAR2_EXIT]]
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; SWITCH: branch_6.i:
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; SWITCH-NEXT: br label [[BAR2_EXIT]]
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; SWITCH: unreachabledefault.i:
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; SWITCH-NEXT: unreachable
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; SWITCH: bar2.exit:
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; SWITCH-NEXT: [[TMP2:%.*]] = phi i64 [ 5, [[BRANCH_0_I]] ], [ 9, [[BRANCH_2_I]] ], [ 2, [[BRANCH_4_I]] ], [ 7, [[BRANCH_6_I]] ]
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; SWITCH-NEXT: ret i64 [[TMP2]]
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;
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; CHECK-LABEL: define i64 @foo2(
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; CHECK-SAME: i64 [[A:%.*]]) {
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; CHECK-NEXT: switch i64 [[A]], label [[UNREACHABLEDEFAULT_I:%.*]] [
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; CHECK-NEXT: i64 0, label [[BRANCH_0_I:%.*]]
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; CHECK-NEXT: i64 2, label [[BRANCH_2_I:%.*]]
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; CHECK-NEXT: i64 4, label [[BRANCH_4_I:%.*]]
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; CHECK-NEXT: i64 6, label [[BRANCH_6_I:%.*]]
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; CHECK-NEXT: ]
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; CHECK: branch_0.i:
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; CHECK-NEXT: br label [[BAR2_EXIT:%.*]]
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; CHECK: branch_2.i:
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; CHECK-NEXT: br label [[BAR2_EXIT]]
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; CHECK: branch_4.i:
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; CHECK-NEXT: br label [[BAR2_EXIT]]
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; CHECK: branch_6.i:
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; CHECK-NEXT: br label [[BAR2_EXIT]]
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; CHECK: unreachabledefault.i:
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; CHECK-NEXT: unreachable
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; CHECK: bar2.exit:
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; CHECK-NEXT: [[B_I:%.*]] = phi i64 [ 5, [[BRANCH_0_I]] ], [ 9, [[BRANCH_2_I]] ], [ 2, [[BRANCH_4_I]] ], [ 7, [[BRANCH_6_I]] ]
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; CHECK-NEXT: ret i64 [[B_I]]
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;
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%b = call i64 @bar2(i64 %a)
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ret i64 %b
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}
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define i64 @bar1(i64 %a) {
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; LOOKUPTABLE-LABEL: define i64 @bar1(
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; LOOKUPTABLE-SAME: i64 [[TMP0:%.*]]) {
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; LOOKUPTABLE-NEXT: switch i64 [[TMP0]], label [[DEFAULT_BRANCH:%.*]] [
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; LOOKUPTABLE-NEXT: i64 0, label [[BRANCH_0:%.*]]
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; LOOKUPTABLE-NEXT: i64 2, label [[BRANCH_2:%.*]]
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; LOOKUPTABLE-NEXT: i64 4, label [[BRANCH_4:%.*]]
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; LOOKUPTABLE-NEXT: i64 6, label [[BRANCH_6:%.*]]
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; LOOKUPTABLE-NEXT: ]
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; LOOKUPTABLE: branch_0:
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; LOOKUPTABLE-NEXT: br label [[EXIT:%.*]]
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; LOOKUPTABLE: branch_2:
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; LOOKUPTABLE-NEXT: br label [[EXIT]]
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; LOOKUPTABLE: branch_4:
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; LOOKUPTABLE-NEXT: br label [[EXIT]]
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; LOOKUPTABLE: branch_6:
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; LOOKUPTABLE-NEXT: br label [[EXIT]]
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; LOOKUPTABLE: default_branch:
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; LOOKUPTABLE-NEXT: br label [[EXIT]]
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; LOOKUPTABLE: exit:
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; LOOKUPTABLE-NEXT: [[TMP2:%.*]] = phi i64 [ 5, [[BRANCH_0]] ], [ 9, [[BRANCH_2]] ], [ 2, [[BRANCH_4]] ], [ 7, [[BRANCH_6]] ], [ 3, [[DEFAULT_BRANCH]] ]
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; LOOKUPTABLE-NEXT: ret i64 [[TMP2]]
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;
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; SWITCH-LABEL: define i64 @bar1(
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; SWITCH-SAME: i64 [[TMP0:%.*]]) {
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; SWITCH-NEXT: switch i64 [[TMP0]], label [[DEFAULT_BRANCH:%.*]] [
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; SWITCH-NEXT: i64 0, label [[BRANCH_0:%.*]]
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; SWITCH-NEXT: i64 2, label [[BRANCH_2:%.*]]
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; SWITCH-NEXT: i64 4, label [[BRANCH_4:%.*]]
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; SWITCH-NEXT: i64 6, label [[BRANCH_6:%.*]]
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; SWITCH-NEXT: ]
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; SWITCH: branch_0:
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; SWITCH-NEXT: br label [[EXIT:%.*]]
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; SWITCH: branch_2:
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; SWITCH-NEXT: br label [[EXIT]]
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; SWITCH: branch_4:
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; SWITCH-NEXT: br label [[EXIT]]
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; SWITCH: branch_6:
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; SWITCH-NEXT: br label [[EXIT]]
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; SWITCH: default_branch:
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; SWITCH-NEXT: br label [[EXIT]]
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; SWITCH: exit:
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; SWITCH-NEXT: [[TMP2:%.*]] = phi i64 [ 5, [[BRANCH_0]] ], [ 9, [[BRANCH_2]] ], [ 2, [[BRANCH_4]] ], [ 7, [[BRANCH_6]] ], [ 3, [[DEFAULT_BRANCH]] ]
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; SWITCH-NEXT: ret i64 [[TMP2]]
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;
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; CHECK-LABEL: define i64 @bar1(
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; CHECK-SAME: i64 [[A:%.*]]) {
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; CHECK-NEXT: switch i64 [[A]], label [[DEFAULT_BRANCH:%.*]] [
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; CHECK-NEXT: i64 0, label [[BRANCH_0:%.*]]
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; CHECK-NEXT: i64 2, label [[BRANCH_2:%.*]]
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; CHECK-NEXT: i64 4, label [[BRANCH_4:%.*]]
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; CHECK-NEXT: i64 6, label [[BRANCH_6:%.*]]
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; CHECK-NEXT: ]
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; CHECK: branch_0:
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; CHECK-NEXT: br label [[EXIT:%.*]]
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; CHECK: branch_2:
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; CHECK-NEXT: br label [[EXIT]]
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; CHECK: branch_4:
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; CHECK-NEXT: br label [[EXIT]]
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; CHECK: branch_6:
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; CHECK-NEXT: br label [[EXIT]]
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; CHECK: default_branch:
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; CHECK-NEXT: br label [[EXIT]]
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; CHECK: exit:
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; CHECK-NEXT: [[B:%.*]] = phi i64 [ 5, [[BRANCH_0]] ], [ 9, [[BRANCH_2]] ], [ 2, [[BRANCH_4]] ], [ 7, [[BRANCH_6]] ], [ 3, [[DEFAULT_BRANCH]] ]
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; CHECK-NEXT: ret i64 [[B]]
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;
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switch i64 %a, label %default_branch [
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i64 0, label %branch_0
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i64 2, label %branch_2
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i64 4, label %branch_4
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i64 6, label %branch_6
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]
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branch_0:
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br label %exit
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branch_2:
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br label %exit
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branch_4:
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br label %exit
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branch_6:
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br label %exit
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default_branch:
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br label %exit
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exit:
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%b = phi i64 [ 5, %branch_0 ], [ 9, %branch_2 ], [ 2, %branch_4 ], [ 7, %branch_6 ], [ 3, %default_branch ]
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ret i64 %b
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}
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define i64 @bar2(i64 %a) {
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; LOOKUPTABLE-LABEL: define i64 @bar2(
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; LOOKUPTABLE-SAME: i64 [[TMP0:%.*]]) {
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; LOOKUPTABLE-NEXT: switch i64 [[TMP0]], label [[UNREACHABLEDEFAULT:%.*]] [
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; LOOKUPTABLE-NEXT: i64 0, label [[BRANCH_0:%.*]]
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; LOOKUPTABLE-NEXT: i64 2, label [[BRANCH_2:%.*]]
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; LOOKUPTABLE-NEXT: i64 4, label [[BRANCH_4:%.*]]
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; LOOKUPTABLE-NEXT: i64 6, label [[BRANCH_6:%.*]]
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; LOOKUPTABLE-NEXT: ]
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; LOOKUPTABLE: branch_0:
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; LOOKUPTABLE-NEXT: br label [[EXIT:%.*]]
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; LOOKUPTABLE: branch_2:
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; LOOKUPTABLE-NEXT: br label [[EXIT]]
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; LOOKUPTABLE: branch_4:
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; LOOKUPTABLE-NEXT: br label [[EXIT]]
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; LOOKUPTABLE: branch_6:
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; LOOKUPTABLE-NEXT: br label [[EXIT]]
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; LOOKUPTABLE: unreachabledefault:
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; LOOKUPTABLE-NEXT: unreachable
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; LOOKUPTABLE: exit:
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; LOOKUPTABLE-NEXT: [[TMP2:%.*]] = phi i64 [ 5, [[BRANCH_0]] ], [ 9, [[BRANCH_2]] ], [ 2, [[BRANCH_4]] ], [ 7, [[BRANCH_6]] ]
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; LOOKUPTABLE-NEXT: ret i64 [[TMP2]]
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;
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; SWITCH-LABEL: define i64 @bar2(
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; SWITCH-SAME: i64 [[TMP0:%.*]]) {
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; SWITCH-NEXT: switch i64 [[TMP0]], label [[UNREACHABLEDEFAULT:%.*]] [
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; SWITCH-NEXT: i64 0, label [[BRANCH_0:%.*]]
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; SWITCH-NEXT: i64 2, label [[BRANCH_2:%.*]]
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; SWITCH-NEXT: i64 4, label [[BRANCH_4:%.*]]
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; SWITCH-NEXT: i64 6, label [[BRANCH_6:%.*]]
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; SWITCH-NEXT: ]
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; SWITCH: branch_0:
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; SWITCH-NEXT: br label [[EXIT:%.*]]
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; SWITCH: branch_2:
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; SWITCH-NEXT: br label [[EXIT]]
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; SWITCH: branch_4:
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; SWITCH-NEXT: br label [[EXIT]]
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; SWITCH: branch_6:
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; SWITCH-NEXT: br label [[EXIT]]
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; SWITCH: unreachabledefault:
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; SWITCH-NEXT: unreachable
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; SWITCH: exit:
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; SWITCH-NEXT: [[TMP2:%.*]] = phi i64 [ 5, [[BRANCH_0]] ], [ 9, [[BRANCH_2]] ], [ 2, [[BRANCH_4]] ], [ 7, [[BRANCH_6]] ]
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; SWITCH-NEXT: ret i64 [[TMP2]]
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;
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; CHECK-LABEL: define i64 @bar2(
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; CHECK-SAME: i64 [[A:%.*]]) {
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; CHECK-NEXT: switch i64 [[A]], label [[UNREACHABLEDEFAULT:%.*]] [
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; CHECK-NEXT: i64 0, label [[BRANCH_0:%.*]]
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; CHECK-NEXT: i64 2, label [[BRANCH_2:%.*]]
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; CHECK-NEXT: i64 4, label [[BRANCH_4:%.*]]
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; CHECK-NEXT: i64 6, label [[BRANCH_6:%.*]]
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; CHECK-NEXT: ]
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; CHECK: branch_0:
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; CHECK-NEXT: br label [[EXIT:%.*]]
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; CHECK: branch_2:
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; CHECK-NEXT: br label [[EXIT]]
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; CHECK: branch_4:
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; CHECK-NEXT: br label [[EXIT]]
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; CHECK: branch_6:
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; CHECK-NEXT: br label [[EXIT]]
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; CHECK: unreachabledefault:
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; CHECK-NEXT: unreachable
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; CHECK: exit:
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; CHECK-NEXT: [[B:%.*]] = phi i64 [ 5, [[BRANCH_0]] ], [ 9, [[BRANCH_2]] ], [ 2, [[BRANCH_4]] ], [ 7, [[BRANCH_6]] ]
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; CHECK-NEXT: ret i64 [[B]]
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;
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switch i64 %a, label %unreachabledefault [
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i64 0, label %branch_0
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i64 2, label %branch_2
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i64 4, label %branch_4
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i64 6, label %branch_6
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]
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branch_0:
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br label %exit
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branch_2:
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br label %exit
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branch_4:
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br label %exit
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branch_6:
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br label %exit
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unreachabledefault:
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unreachable
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exit:
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%b = phi i64 [ 5, %branch_0 ], [ 9, %branch_2 ], [ 2, %branch_4 ], [ 7, %branch_6 ]
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ret i64 %b
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}
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