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[SimpleLoopUnswitch] Add test cases where freeze of OR/AND cons needed.

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Freezing just the result of the AND/OR here is not enough.
This commit is contained in:
Florian Hahn
2022-04-27 21:19:13 +01:00
parent 8032c5f68c
commit 93182c9ff4
1 changed files with 253 additions and 0 deletions
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253
llvm/test/Transforms/SimpleLoopUnswitch/trivial-unswitch-freeze-individual-conditions.ll Normal file
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; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
; RUN: opt -passes='loop(simple-loop-unswitch)' -S %s | FileCheck %s
declare void @some_func()
define i32 @need_freeze_of_individual_or_conditions1(i1 %cond1, i1 %cond2, i1 %cond3, i1 %cond4) {
; CHECK-LABEL: @need_freeze_of_individual_or_conditions1(
; CHECK-NEXT: entry:
; CHECK-NEXT: [[TMP0:%.*]] = and i1 [[COND4:%.*]], [[COND1:%.*]]
; CHECK-NEXT: [[DOTFR:%.*]] = freeze i1 [[TMP0]]
; CHECK-NEXT: br i1 [[DOTFR]], label [[ENTRY_SPLIT:%.*]], label [[EXIT_SPLIT:%.*]]
; CHECK: entry.split:
; CHECK-NEXT: br label [[LOOP_HEADER:%.*]]
; CHECK: loop.header:
; CHECK-NEXT: [[OR:%.*]] = or i1 [[COND2:%.*]], [[COND3:%.*]]
; CHECK-NEXT: [[AND1:%.*]] = and i1 [[OR]], true
; CHECK-NEXT: [[AND2:%.*]] = select i1 [[AND1]], i1 true, i1 false
; CHECK-NEXT: br i1 [[AND2]], label [[LOOP_LATCH:%.*]], label [[EXIT:%.*]]
; CHECK: loop.latch:
; CHECK-NEXT: call void @some_func()
; CHECK-NEXT: br label [[LOOP_HEADER]]
; CHECK: exit:
; CHECK-NEXT: br label [[EXIT_SPLIT]]
; CHECK: exit.split:
; CHECK-NEXT: ret i32 0
;
entry:
br label %loop.header
loop.header:
%or = or i1 %cond2, %cond3
%and1 = and i1 %or, %cond1
%and2 = select i1 %and1, i1 %cond4, i1 false
br i1 %and2, label %loop.latch, label %exit
loop.latch:
call void @some_func()
br label %loop.header
exit:
ret i32 0
}
define i32 @need_freeze_of_individual_or_conditions2(i1 noundef %cond1, i1 %cond2, i1 %cond3, i1 %cond4) {
; CHECK-LABEL: @need_freeze_of_individual_or_conditions2(
; CHECK-NEXT: entry:
; CHECK-NEXT: [[TMP0:%.*]] = and i1 [[COND4:%.*]], [[COND1:%.*]]
; CHECK-NEXT: [[DOTFR:%.*]] = freeze i1 [[TMP0]]
; CHECK-NEXT: br i1 [[DOTFR]], label [[ENTRY_SPLIT:%.*]], label [[EXIT_SPLIT:%.*]]
; CHECK: entry.split:
; CHECK-NEXT: br label [[LOOP_HEADER:%.*]]
; CHECK: loop.header:
; CHECK-NEXT: [[OR:%.*]] = or i1 [[COND2:%.*]], [[COND3:%.*]]
; CHECK-NEXT: [[AND1:%.*]] = and i1 [[OR]], true
; CHECK-NEXT: [[AND2:%.*]] = select i1 [[AND1]], i1 true, i1 false
; CHECK-NEXT: br i1 [[AND2]], label [[LOOP_LATCH:%.*]], label [[EXIT:%.*]]
; CHECK: loop.latch:
; CHECK-NEXT: call void @some_func()
; CHECK-NEXT: br label [[LOOP_HEADER]]
; CHECK: exit:
; CHECK-NEXT: br label [[EXIT_SPLIT]]
; CHECK: exit.split:
; CHECK-NEXT: ret i32 0
;
entry:
br label %loop.header
loop.header:
%or = or i1 %cond2, %cond3
%and1 = and i1 %or, %cond1
%and2 = select i1 %and1, i1 %cond4, i1 false
br i1 %and2, label %loop.latch, label %exit
loop.latch:
call void @some_func()
br label %loop.header
exit:
ret i32 0
}
define i32 @need_freeze_of_individual_or_conditions3(i1 %cond1, i1 %cond2, i1 %cond3, i1 noundef %cond4) {
; CHECK-LABEL: @need_freeze_of_individual_or_conditions3(
; CHECK-NEXT: entry:
; CHECK-NEXT: [[TMP0:%.*]] = and i1 [[COND4:%.*]], [[COND1:%.*]]
; CHECK-NEXT: [[DOTFR:%.*]] = freeze i1 [[TMP0]]
; CHECK-NEXT: br i1 [[DOTFR]], label [[ENTRY_SPLIT:%.*]], label [[EXIT_SPLIT:%.*]]
; CHECK: entry.split:
; CHECK-NEXT: br label [[LOOP_HEADER:%.*]]
; CHECK: loop.header:
; CHECK-NEXT: [[OR:%.*]] = or i1 [[COND2:%.*]], [[COND3:%.*]]
; CHECK-NEXT: [[AND1:%.*]] = and i1 [[OR]], true
; CHECK-NEXT: [[AND2:%.*]] = select i1 [[AND1]], i1 true, i1 false
; CHECK-NEXT: br i1 [[AND2]], label [[LOOP_LATCH:%.*]], label [[EXIT:%.*]]
; CHECK: loop.latch:
; CHECK-NEXT: call void @some_func()
; CHECK-NEXT: br label [[LOOP_HEADER]]
; CHECK: exit:
; CHECK-NEXT: br label [[EXIT_SPLIT]]
; CHECK: exit.split:
; CHECK-NEXT: ret i32 0
;
entry:
br label %loop.header
loop.header:
%or = or i1 %cond2, %cond3
%and1 = and i1 %or, %cond1
%and2 = select i1 %and1, i1 %cond4, i1 false
br i1 %and2, label %loop.latch, label %exit
loop.latch:
call void @some_func()
br label %loop.header
exit:
ret i32 0
}
define i32 @need_freeze_of_individual_and_conditions1(i1 %cond1, i1 %cond4) {
; CHECK-LABEL: @need_freeze_of_individual_and_conditions1(
; CHECK-NEXT: entry:
; CHECK-NEXT: [[TMP0:%.*]] = or i1 [[COND4:%.*]], [[COND1:%.*]]
; CHECK-NEXT: [[DOTFR:%.*]] = freeze i1 [[TMP0]]
; CHECK-NEXT: br i1 [[DOTFR]], label [[EXIT_SPLIT:%.*]], label [[ENTRY_SPLIT:%.*]]
; CHECK: entry.split:
; CHECK-NEXT: br label [[LOOP_HEADER:%.*]]
; CHECK: loop.header:
; CHECK-NEXT: [[COND_OR1:%.*]] = or i1 undef, false
; CHECK-NEXT: [[COND_OR6:%.*]] = select i1 [[COND_OR1]], i1 true, i1 false
; CHECK-NEXT: br i1 [[COND_OR6]], label [[EXIT:%.*]], label [[LOOP_LATCH:%.*]]
; CHECK: loop.latch:
; CHECK-NEXT: br label [[LOOP_HEADER]]
; CHECK: exit:
; CHECK-NEXT: br label [[EXIT_SPLIT]]
; CHECK: exit.split:
; CHECK-NEXT: ret i32 0
;
entry:
br label %loop.header
loop.header:
%cond_or1 = or i1 undef, %cond1
%cond_or6 = select i1 %cond_or1, i1 true, i1 %cond4
br i1 %cond_or6, label %exit, label %loop.latch
loop.latch:
br label %loop.header
exit:
ret i32 0
}
define i32 @need_freeze_of_individual_and_conditions2(i1 noundef %cond1, i1 %cond4) {
; CHECK-LABEL: @need_freeze_of_individual_and_conditions2(
; CHECK-NEXT: entry:
; CHECK-NEXT: [[TMP0:%.*]] = or i1 [[COND4:%.*]], [[COND1:%.*]]
; CHECK-NEXT: [[DOTFR:%.*]] = freeze i1 [[TMP0]]
; CHECK-NEXT: br i1 [[DOTFR]], label [[EXIT_SPLIT:%.*]], label [[ENTRY_SPLIT:%.*]]
; CHECK: entry.split:
; CHECK-NEXT: br label [[LOOP_HEADER:%.*]]
; CHECK: loop.header:
; CHECK-NEXT: [[COND_OR1:%.*]] = or i1 undef, false
; CHECK-NEXT: [[COND_OR6:%.*]] = select i1 [[COND_OR1]], i1 true, i1 false
; CHECK-NEXT: br i1 [[COND_OR6]], label [[EXIT:%.*]], label [[LOOP_LATCH:%.*]]
; CHECK: loop.latch:
; CHECK-NEXT: br label [[LOOP_HEADER]]
; CHECK: exit:
; CHECK-NEXT: br label [[EXIT_SPLIT]]
; CHECK: exit.split:
; CHECK-NEXT: ret i32 0
;
entry:
br label %loop.header
loop.header:
%cond_or1 = or i1 undef, %cond1
%cond_or6 = select i1 %cond_or1, i1 true, i1 %cond4
br i1 %cond_or6, label %exit, label %loop.latch
loop.latch:
br label %loop.header
exit:
ret i32 0
}
define i32 @need_freeze_of_individual_and_conditions3(i1 %cond1, i1 noundef %cond4) {
; CHECK-LABEL: @need_freeze_of_individual_and_conditions3(
; CHECK-NEXT: entry:
; CHECK-NEXT: [[TMP0:%.*]] = or i1 [[COND4:%.*]], [[COND1:%.*]]
; CHECK-NEXT: [[DOTFR:%.*]] = freeze i1 [[TMP0]]
; CHECK-NEXT: br i1 [[DOTFR]], label [[EXIT_SPLIT:%.*]], label [[ENTRY_SPLIT:%.*]]
; CHECK: entry.split:
; CHECK-NEXT: br label [[LOOP_HEADER:%.*]]
; CHECK: loop.header:
; CHECK-NEXT: [[COND_OR1:%.*]] = or i1 undef, false
; CHECK-NEXT: [[COND_OR6:%.*]] = select i1 [[COND_OR1]], i1 true, i1 false
; CHECK-NEXT: br i1 [[COND_OR6]], label [[EXIT:%.*]], label [[LOOP_LATCH:%.*]]
; CHECK: loop.latch:
; CHECK-NEXT: br label [[LOOP_HEADER]]
; CHECK: exit:
; CHECK-NEXT: br label [[EXIT_SPLIT]]
; CHECK: exit.split:
; CHECK-NEXT: ret i32 0
;
entry:
br label %loop.header
loop.header:
%cond_or1 = or i1 undef, %cond1
%cond_or6 = select i1 %cond_or1, i1 true, i1 %cond4
br i1 %cond_or6, label %exit, label %loop.latch
loop.latch:
br label %loop.header
exit:
ret i32 0
}
define i32 @need_freeze_of_individual_and_conditions4(i1 noundef %cond1, i1 noundef %cond4) {
; CHECK-LABEL: @need_freeze_of_individual_and_conditions4(
; CHECK-NEXT: entry:
; CHECK-NEXT: [[TMP0:%.*]] = or i1 [[COND4:%.*]], [[COND1:%.*]]
; CHECK-NEXT: br i1 [[TMP0]], label [[EXIT_SPLIT:%.*]], label [[ENTRY_SPLIT:%.*]]
; CHECK: entry.split:
; CHECK-NEXT: br label [[LOOP_HEADER:%.*]]
; CHECK: loop.header:
; CHECK-NEXT: [[COND_OR1:%.*]] = or i1 undef, false
; CHECK-NEXT: [[COND_OR6:%.*]] = select i1 [[COND_OR1]], i1 true, i1 false
; CHECK-NEXT: br i1 [[COND_OR6]], label [[EXIT:%.*]], label [[LOOP_LATCH:%.*]]
; CHECK: loop.latch:
; CHECK-NEXT: br label [[LOOP_HEADER]]
; CHECK: exit:
; CHECK-NEXT: br label [[EXIT_SPLIT]]
; CHECK: exit.split:
; CHECK-NEXT: ret i32 0
;
entry:
br label %loop.header
loop.header:
%cond_or1 = or i1 undef, %cond1
%cond_or6 = select i1 %cond_or1, i1 true, i1 %cond4
br i1 %cond_or6, label %exit, label %loop.latch
loop.latch:
br label %loop.header
exit:
ret i32 0
}