229 lines
6.3 KiB
LLVM
229 lines
6.3 KiB
LLVM
; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
|
|
; then metadata checks MDn were added manually.
|
|
; RUN: opt -passes='loop(simple-loop-unswitch),verify<loops>' -S < %s | FileCheck %s
|
|
; RUN: opt -verify-memoryssa -passes='loop-mssa(simple-loop-unswitch),verify<loops>' -S < %s | FileCheck %s
|
|
|
|
declare void @some_func()
|
|
|
|
; Test for a trivially unswitchable switch with non-default case exiting.
|
|
define i32 @test2(i32* %var, i32 %cond1, i32 %cond2) {
|
|
; CHECK-LABEL: @test2(
|
|
; CHECK-NEXT: entry:
|
|
; CHECK-NEXT: switch i32 [[COND2:%.*]], label [[ENTRY_SPLIT:%.*]] [
|
|
; CHECK-NEXT: i32 2, label [[LOOP_EXIT2:%.*]]
|
|
; CHECK-NEXT: ], !prof ![[MD0:[0-9]+]]
|
|
; CHECK: entry.split:
|
|
; CHECK-NEXT: br label [[LOOP_BEGIN:%.*]]
|
|
; CHECK: loop_begin:
|
|
; CHECK-NEXT: [[VAR_VAL:%.*]] = load i32, i32* [[VAR:%.*]]
|
|
; CHECK-NEXT: switch i32 [[COND2]], label [[LOOP2:%.*]] [
|
|
; CHECK-NEXT: i32 0, label [[LOOP0:%.*]]
|
|
; CHECK-NEXT: i32 1, label [[LOOP1:%.*]]
|
|
; CHECK-NEXT: ], !prof ![[MD1:[0-9]+]]
|
|
; CHECK: loop0:
|
|
; CHECK-NEXT: call void @some_func()
|
|
; CHECK-NEXT: br label [[LOOP_LATCH:%.*]]
|
|
; CHECK: loop1:
|
|
; CHECK-NEXT: call void @some_func()
|
|
; CHECK-NEXT: br label [[LOOP_LATCH]]
|
|
; CHECK: loop2:
|
|
; CHECK-NEXT: call void @some_func()
|
|
; CHECK-NEXT: br label [[LOOP_LATCH]]
|
|
; CHECK: loop_latch:
|
|
; CHECK-NEXT: br label [[LOOP_BEGIN]]
|
|
; CHECK: loop_exit1:
|
|
; CHECK-NEXT: ret i32 0
|
|
; CHECK: loop_exit2:
|
|
; CHECK-NEXT: ret i32 0
|
|
; CHECK: loop_exit3:
|
|
; CHECK-NEXT: ret i32 0
|
|
;
|
|
entry:
|
|
br label %loop_begin
|
|
|
|
loop_begin:
|
|
%var_val = load i32, i32* %var
|
|
switch i32 %cond2, label %loop2 [
|
|
i32 0, label %loop0
|
|
i32 1, label %loop1
|
|
i32 2, label %loop_exit2
|
|
], !prof !{!"branch_weights", i32 99, i32 100, i32 101, i32 102}
|
|
|
|
loop0:
|
|
call void @some_func()
|
|
br label %loop_latch
|
|
|
|
loop1:
|
|
call void @some_func()
|
|
br label %loop_latch
|
|
|
|
loop2:
|
|
call void @some_func()
|
|
br label %loop_latch
|
|
|
|
loop_latch:
|
|
br label %loop_begin
|
|
|
|
loop_exit1:
|
|
ret i32 0
|
|
|
|
loop_exit2:
|
|
ret i32 0
|
|
|
|
loop_exit3:
|
|
ret i32 0
|
|
}
|
|
|
|
; Test for a trivially unswitchable switch with only the default case exiting.
|
|
define i32 @test3(i32* %var, i32 %cond1, i32 %cond2) {
|
|
; CHECK-LABEL: @test3(
|
|
; CHECK-NEXT: entry:
|
|
; CHECK-NEXT: switch i32 [[COND2:%.*]], label [[LOOP_EXIT2:%.*]] [
|
|
; CHECK-NEXT: i32 0, label [[ENTRY_SPLIT:%.*]]
|
|
; CHECK-NEXT: i32 1, label [[ENTRY_SPLIT]]
|
|
; CHECK-NEXT: i32 2, label [[ENTRY_SPLIT]]
|
|
; CHECK-NEXT: ], !prof ![[MD2:[0-9]+]]
|
|
; CHECK: entry.split:
|
|
; CHECK-NEXT: br label [[LOOP_BEGIN:%.*]]
|
|
; CHECK: loop_begin:
|
|
; CHECK-NEXT: [[VAR_VAL:%.*]] = load i32, i32* [[VAR:%.*]]
|
|
; CHECK-NEXT: switch i32 [[COND2]], label [[LOOP2:%.*]] [
|
|
; CHECK-NEXT: i32 0, label [[LOOP0:%.*]]
|
|
; CHECK-NEXT: i32 1, label [[LOOP1:%.*]]
|
|
; CHECK-NEXT: ], !prof ![[MD3:[0-9]+]]
|
|
; CHECK: loop0:
|
|
; CHECK-NEXT: call void @some_func()
|
|
; CHECK-NEXT: br label [[LOOP_LATCH:%.*]]
|
|
; CHECK: loop1:
|
|
; CHECK-NEXT: call void @some_func()
|
|
; CHECK-NEXT: br label [[LOOP_LATCH]]
|
|
; CHECK: loop2:
|
|
; CHECK-NEXT: call void @some_func()
|
|
; CHECK-NEXT: br label [[LOOP_LATCH]]
|
|
; CHECK: loop_latch:
|
|
; CHECK-NEXT: br label [[LOOP_BEGIN]]
|
|
; CHECK: loop_exit1:
|
|
; CHECK-NEXT: ret i32 0
|
|
; CHECK: loop_exit2:
|
|
; CHECK-NEXT: ret i32 0
|
|
; CHECK: loop_exit3:
|
|
; CHECK-NEXT: ret i32 0
|
|
;
|
|
entry:
|
|
br label %loop_begin
|
|
|
|
loop_begin:
|
|
%var_val = load i32, i32* %var
|
|
switch i32 %cond2, label %loop_exit2 [
|
|
i32 0, label %loop0
|
|
i32 1, label %loop1
|
|
i32 2, label %loop2
|
|
], !prof !{!"branch_weights", i32 99, i32 100, i32 101, i32 102}
|
|
|
|
loop0:
|
|
call void @some_func()
|
|
br label %loop_latch
|
|
|
|
loop1:
|
|
call void @some_func()
|
|
br label %loop_latch
|
|
|
|
loop2:
|
|
call void @some_func()
|
|
br label %loop_latch
|
|
|
|
loop_latch:
|
|
br label %loop_begin
|
|
|
|
loop_exit1:
|
|
ret i32 0
|
|
|
|
loop_exit2:
|
|
ret i32 0
|
|
|
|
loop_exit3:
|
|
ret i32 0
|
|
}
|
|
|
|
; Test for a trivially unswitchable switch with multiple exiting cases and
|
|
; multiple looping cases.
|
|
define i32 @test4(i32* %var, i32 %cond1, i32 %cond2) {
|
|
; CHECK-LABEL: @test4(
|
|
; CHECK-NEXT: entry:
|
|
; CHECK-NEXT: switch i32 [[COND2:%.*]], label [[LOOP_EXIT2:%.*]] [
|
|
; CHECK-NEXT: i32 13, label [[LOOP_EXIT1:%.*]]
|
|
; CHECK-NEXT: i32 42, label [[LOOP_EXIT3:%.*]]
|
|
; CHECK-NEXT: i32 0, label [[ENTRY_SPLIT:%.*]]
|
|
; CHECK-NEXT: i32 1, label [[ENTRY_SPLIT]]
|
|
; CHECK-NEXT: i32 2, label [[ENTRY_SPLIT]]
|
|
; CHECK-NEXT: ], !prof ![[MD4:[0-9]+]]
|
|
; CHECK: entry.split:
|
|
; CHECK-NEXT: br label [[LOOP_BEGIN:%.*]]
|
|
; CHECK: loop_begin:
|
|
; CHECK-NEXT: [[VAR_VAL:%.*]] = load i32, i32* [[VAR:%.*]]
|
|
; CHECK-NEXT: switch i32 [[COND2]], label [[LOOP2:%.*]] [
|
|
; CHECK-NEXT: i32 0, label [[LOOP0:%.*]]
|
|
; CHECK-NEXT: i32 1, label [[LOOP1:%.*]]
|
|
; CHECK-NEXT: ], !prof ![[MD3:[0-9]+]]
|
|
; CHECK: loop0:
|
|
; CHECK-NEXT: call void @some_func()
|
|
; CHECK-NEXT: br label [[LOOP_LATCH:%.*]]
|
|
; CHECK: loop1:
|
|
; CHECK-NEXT: call void @some_func()
|
|
; CHECK-NEXT: br label [[LOOP_LATCH]]
|
|
; CHECK: loop2:
|
|
; CHECK-NEXT: call void @some_func()
|
|
; CHECK-NEXT: br label [[LOOP_LATCH]]
|
|
; CHECK: loop_latch:
|
|
; CHECK-NEXT: br label [[LOOP_BEGIN]]
|
|
; CHECK: loop_exit1:
|
|
; CHECK-NEXT: ret i32 0
|
|
; CHECK: loop_exit2:
|
|
; CHECK-NEXT: ret i32 0
|
|
; CHECK: loop_exit3:
|
|
; CHECK-NEXT: ret i32 0
|
|
;
|
|
entry:
|
|
br label %loop_begin
|
|
|
|
loop_begin:
|
|
%var_val = load i32, i32* %var
|
|
switch i32 %cond2, label %loop_exit2 [
|
|
i32 0, label %loop0
|
|
i32 1, label %loop1
|
|
i32 13, label %loop_exit1
|
|
i32 2, label %loop2
|
|
i32 42, label %loop_exit3
|
|
], !prof !{!"branch_weights", i32 99, i32 100, i32 101, i32 113, i32 102, i32 142}
|
|
|
|
loop0:
|
|
call void @some_func()
|
|
br label %loop_latch
|
|
|
|
loop1:
|
|
call void @some_func()
|
|
br label %loop_latch
|
|
|
|
loop2:
|
|
call void @some_func()
|
|
br label %loop_latch
|
|
|
|
loop_latch:
|
|
br label %loop_begin
|
|
|
|
loop_exit1:
|
|
ret i32 0
|
|
|
|
loop_exit2:
|
|
ret i32 0
|
|
|
|
loop_exit3:
|
|
ret i32 0
|
|
}
|
|
|
|
; CHECK: ![[MD0]] = !{!"branch_weights", i32 300, i32 102}
|
|
; CHECK: ![[MD1]] = !{!"branch_weights", i32 99, i32 100, i32 101}
|
|
; CHECK: ![[MD2]] = !{!"branch_weights", i32 99, i32 100, i32 101, i32 102}
|
|
; CHECK: ![[MD3]] = !{!"branch_weights", i32 102, i32 100, i32 101}
|
|
; CHECK: ![[MD4]] = !{!"branch_weights", i32 99, i32 113, i32 142, i32 100, i32 101, i32 102}
|