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|
; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
; RUN: opt -passes=attributor -attributor-disable=false -S < %s | FileCheck %s
define i8 @test1(i32 %a, i32 %length) {
; CHECK-LABEL: define {{[^@]+}}@test1
; CHECK-SAME: (i32 [[A:%.*]], i32 [[LENGTH:%.*]])
; CHECK-NEXT: entry:
; CHECK-NEXT: br label [[LOOP:%.*]]
; CHECK: loop:
; CHECK-NEXT: [[IV:%.*]] = phi i32 [ 0, [[ENTRY:%.*]] ], [ [[IV_NEXT:%.*]], [[BACKEDGE:%.*]] ]
; CHECK-NEXT: br label [[BACKEDGE]]
; CHECK: backedge:
; CHECK-NEXT: [[IV_NEXT]] = add nsw i32 [[IV]], 1
; CHECK-NEXT: [[CONT:%.*]] = icmp slt i32 [[IV_NEXT]], 400
; CHECK-NEXT: br i1 [[CONT]], label [[LOOP]], label [[EXIT:%.*]]
; CHECK: exit:
; CHECK-NEXT: ret i8 0
;
entry:
br label %loop
loop:
%iv = phi i32 [0, %entry], [%iv.next, %backedge]
%cnd = icmp sge i32 %iv, 0
br i1 %cnd, label %backedge, label %exit
backedge:
%iv.next = add nsw i32 %iv, 1
%cont = icmp slt i32 %iv.next, 400
br i1 %cont, label %loop, label %exit
exit:
ret i8 0
}
define i8 @test2(i32 %n) {
; CHECK-LABEL: define {{[^@]+}}@test2
; CHECK-SAME: (i32 [[N:%.*]])
; CHECK-NEXT: entry:
; CHECK-NEXT: br label [[LOOP:%.*]]
; CHECK: loop:
; CHECK-NEXT: [[IV:%.*]] = phi i32 [ 0, [[ENTRY:%.*]] ], [ [[IV_NEXT:%.*]], [[BACKEDGE:%.*]] ]
; CHECK-NEXT: [[IV2:%.*]] = phi i32 [ [[N:%.*]], [[ENTRY]] ], [ [[IV2_NEXT:%.*]], [[BACKEDGE]] ]
; CHECK-NEXT: [[CND1:%.*]] = icmp sge i32 [[IV]], 0
; CHECK-NEXT: [[CND2:%.*]] = icmp sgt i32 [[IV2]], 0
; CHECK-NEXT: [[CND:%.*]] = and i1 [[CND1]], [[CND2]]
; CHECK-NEXT: br i1 [[CND]], label [[BACKEDGE]], label [[EXIT:%.*]]
; CHECK: backedge:
; CHECK-NEXT: [[IV_NEXT]] = add nsw i32 [[IV]], 1
; CHECK-NEXT: [[IV2_NEXT]] = sub nsw i32 [[IV2]], 1
; CHECK-NEXT: [[CONT1:%.*]] = icmp slt i32 [[IV_NEXT]], 400
; CHECK-NEXT: [[CONT2:%.*]] = icmp sgt i32 [[IV2_NEXT]], 0
; CHECK-NEXT: [[CONT:%.*]] = and i1 [[CONT1]], [[CONT2]]
; CHECK-NEXT: br i1 [[CONT]], label [[LOOP]], label [[EXIT]]
; CHECK: exit:
; CHECK-NEXT: ret i8 0
;
entry:
br label %loop
loop:
%iv = phi i32 [0, %entry], [%iv.next, %backedge]
%iv2 = phi i32 [%n, %entry], [%iv2.next, %backedge]
%cnd1 = icmp sge i32 %iv, 0
%cnd2 = icmp sgt i32 %iv2, 0
%cnd = and i1 %cnd1, %cnd2
br i1 %cnd, label %backedge, label %exit
backedge:
%iv.next = add nsw i32 %iv, 1
%iv2.next = sub nsw i32 %iv2, 1
%cont1 = icmp slt i32 %iv.next, 400
%cont2 = icmp sgt i32 %iv2.next, 0
%cont = and i1 %cont1, %cont2
br i1 %cont, label %loop, label %exit
exit:
ret i8 0
}
; Merging cont block into do block.
define i32 @test3(i32 %i, i1 %f, i32 %n) {
; CHECK-LABEL: define {{[^@]+}}@test3
; CHECK-SAME: (i32 [[I:%.*]], i1 [[F:%.*]], i32 [[N:%.*]])
; CHECK-NEXT: entry:
; CHECK-NEXT: [[C:%.*]] = icmp ne i32 [[I:%.*]], -2134
; CHECK-NEXT: br i1 [[C]], label [[DO:%.*]], label [[EXIT:%.*]]
; CHECK: exit:
; CHECK-NEXT: [[C1:%.*]] = icmp ne i32 [[I]], -42
; CHECK-NEXT: br i1 [[C1]], label [[EXIT2:%.*]], label [[EXIT]]
; CHECK: cont:
; CHECK-NEXT: [[COND_3:%.*]] = icmp sgt i32 [[I]], [[N:%.*]]
; CHECK-NEXT: br i1 [[COND_3]], label [[EXIT2]], label [[EXIT]]
; CHECK: do:
; CHECK-NEXT: [[COND_0:%.*]] = icmp sgt i32 [[I]], 0
; CHECK-NEXT: [[CONSUME:%.*]] = call i32 @consume(i1 [[COND_0]])
; CHECK-NEXT: [[COND:%.*]] = icmp eq i32 [[I]], 0
; CHECK-NEXT: call void (i1, ...) @llvm.experimental.guard(i1 [[COND]]) [ "deopt"() ]
; CHECK-NEXT: br label [[CONT:%.*]]
; CHECK: exit2:
; CHECK-NEXT: ret i32 30
;
entry:
%c = icmp ne i32 %i, -2134
br i1 %c, label %do, label %exit
exit:
%c1 = icmp ne i32 %i, -42
br i1 %c1, label %exit2, label %exit
; Here cont is merged to do and i is any value except -2134.
; i is not the single value: zero.
cont:
%cond.3 = icmp sgt i32 %i, %n
br i1 %cond.3, label %exit2, label %exit
do:
%cond.0 = icmp sgt i32 %i, 0
%consume = call i32 @consume(i1 %cond.0)
%cond = icmp eq i32 %i, 0
call void (i1, ...) @llvm.experimental.guard(i1 %cond) [ "deopt"() ]
%cond.2 = icmp sgt i32 %i, 0
br i1 %cond.2, label %exit, label %cont
exit2:
; LatticeVal for: 'i32 %i' is: constantrange<-2134, 1>
ret i32 30
}
; FIXME: We should be able to merge cont into do.
define i32 @test4(i32 %i, i1 %f, i32 %n) {
; CHECK-LABEL: define {{[^@]+}}@test4
; CHECK-SAME: (i32 [[I:%.*]], i1 [[F:%.*]], i32 [[N:%.*]])
; CHECK-NEXT: entry:
; CHECK-NEXT: [[C:%.*]] = icmp ne i32 [[I:%.*]], -2134
; CHECK-NEXT: br i1 [[C]], label [[DO:%.*]], label [[EXIT:%.*]]
; CHECK: exit:
; CHECK-NEXT: [[C1:%.*]] = icmp ne i32 [[I]], -42
; CHECK-NEXT: br i1 [[C1]], label [[EXIT2:%.*]], label [[EXIT]]
; CHECK: cont:
; CHECK-NEXT: call void @dummy(i1 [[F:%.*]])
; CHECK-NEXT: br label [[EXIT2]]
; CHECK: do:
; CHECK-NEXT: call void @dummy(i1 [[F]])
; CHECK-NEXT: [[CONSUME:%.*]] = call i32 @exit()
; CHECK-NEXT: call void @llvm.assume(i1 [[F]])
; CHECK-NEXT: [[COND:%.*]] = icmp eq i1 [[F]], false
; CHECK-NEXT: br i1 [[COND]], label [[EXIT]], label [[CONT:%.*]]
; CHECK: exit2:
; CHECK-NEXT: ret i32 30
;
; FIXME: COND should be replaced with false. This will be fixed by improving LVI.
entry:
%c = icmp ne i32 %i, -2134
br i1 %c, label %do, label %exit
exit: ; preds = %do, %cont, %exit, %entry
%c1 = icmp ne i32 %i, -42
br i1 %c1, label %exit2, label %exit
cont: ; preds = %do
call void @dummy(i1 %f)
br label %exit2
do: ; preds = %entry
call void @dummy(i1 %f)
%consume = call i32 @exit()
call void @llvm.assume(i1 %f)
%cond = icmp eq i1 %f, false
br i1 %cond, label %exit, label %cont
exit2: ; preds = %cont, %exit
ret i32 30
}
declare i32 @exit()
declare i32 @consume(i1)
declare void @llvm.assume(i1) nounwind
declare void @dummy(i1) nounwind
declare void @llvm.experimental.guard(i1, ...)
|
