; RUN: opt -S -make-guards-explicit -basicaa -licm < %s | FileCheck %s
; RUN: opt -S -aa-pipeline=basic-aa -passes='require<opt-remark-emit>,make-guards-explicit,loop(licm)' < %s | FileCheck %s
-; Test interaction between explicit guards and LICM: make sure that we do not
-; hoist explicit conditions while we can hoist invariant loads in presence of
-; explicit guards.
-
declare void @llvm.experimental.guard(i1,...)
+declare void @maythrow()
; Make sure that we do not hoist widenable_cond out of loop.
-define void @do_not_hoist_widenable_cond(i1 %cond, i32 %N, i32 %M) {
-; CHECK-LABEL: @do_not_hoist_widenable_cond(
+define void @hoist_widenable_cond(i1 %cond, i32 %N, i32 %M) {
+; CHECK-LABEL: @hoist_widenable_cond(
; CHECK-NEXT: entry:
+; CHECK-NEXT: [[WIDENABLE_COND:%.*]] = call i1 @llvm.experimental.widenable.condition()
; CHECK-NEXT: br label [[LOOP:%.*]]
; CHECK: loop:
; CHECK-NEXT: [[IV:%.*]] = phi i32 [ 0, [[ENTRY:%.*]] ], [ [[IV_NEXT:%.*]], [[GUARDED:%.*]] ]
; CHECK-NEXT: [[GUARD_COND:%.*]] = icmp slt i32 [[IV]], [[N:%.*]]
+; CHECK-NEXT: [[EXIPLICIT_GUARD_COND:%.*]] = and i1 [[GUARD_COND]], [[WIDENABLE_COND]]
+; CHECK-NEXT: br i1 [[EXIPLICIT_GUARD_COND]], label [[GUARDED]], label [[DEOPT:%.*]], !prof !0
+; CHECK: deopt:
+; CHECK-NEXT: call void (...) @llvm.experimental.deoptimize.isVoid() [ "deopt"() ]
+; CHECK-NEXT: ret void
+; CHECK: guarded:
+; CHECK-NEXT: [[LOOP_COND:%.*]] = icmp slt i32 [[IV]], [[M:%.*]]
+; CHECK-NEXT: [[IV_NEXT]] = add i32 [[IV]], 1
+; CHECK-NEXT: br i1 [[LOOP_COND]], label [[LOOP]], label [[EXIT:%.*]]
+; CHECK: exit:
+; CHECK-NEXT: ret void
+;
+entry:
+ br label %loop
+
+loop:
+ %iv = phi i32 [ 0, %entry ], [ %iv.next, %loop ]
+ %guard_cond = icmp slt i32 %iv, %N
+ call void(i1, ...) @llvm.experimental.guard(i1 %guard_cond) [ "deopt"() ]
+ %loop_cond = icmp slt i32 %iv, %M
+ %iv.next = add i32 %iv, 1
+ br i1 %loop_cond, label %loop, label %exit
+
+exit:
+ ret void
+}
+
+define void @hoist_widenable_cond_speculate(i1 %cond, i32 %N, i32 %M) {
+; CHECK-LABEL: @hoist_widenable_cond_speculate(
+; CHECK-NEXT: entry:
; CHECK-NEXT: [[WIDENABLE_COND:%.*]] = call i1 @llvm.experimental.widenable.condition()
+; CHECK-NEXT: br label [[LOOP:%.*]]
+; CHECK: loop:
+; CHECK-NEXT: [[IV:%.*]] = phi i32 [ 0, [[ENTRY:%.*]] ], [ [[IV_NEXT:%.*]], [[GUARDED:%.*]] ]
+; CHECK-NEXT: [[GUARD_COND:%.*]] = icmp slt i32 [[IV]], [[N:%.*]]
+; CHECK-NEXT: call void @maythrow()
; CHECK-NEXT: [[EXIPLICIT_GUARD_COND:%.*]] = and i1 [[GUARD_COND]], [[WIDENABLE_COND]]
; CHECK-NEXT: br i1 [[EXIPLICIT_GUARD_COND]], label [[GUARDED]], label [[DEOPT:%.*]], !prof !0
; CHECK: deopt:
loop:
%iv = phi i32 [ 0, %entry ], [ %iv.next, %loop ]
%guard_cond = icmp slt i32 %iv, %N
+ call void @maythrow()
call void(i1, ...) @llvm.experimental.guard(i1 %guard_cond) [ "deopt"() ]
%loop_cond = icmp slt i32 %iv, %M
%iv.next = add i32 %iv, 1
ret void
}
+
define void @hoist_invariant_load(i1 %cond, i32* %np, i32 %M) {
; CHECK-LABEL: @hoist_invariant_load(
; CHECK-NEXT: entry:
; CHECK-NEXT: [[N:%.*]] = load i32, i32* [[NP:%.*]]
+; CHECK-NEXT: [[WIDENABLE_COND:%.*]] = call i1 @llvm.experimental.widenable.condition()
; CHECK-NEXT: br label [[LOOP:%.*]]
; CHECK: loop:
; CHECK-NEXT: [[IV:%.*]] = phi i32 [ 0, [[ENTRY:%.*]] ], [ [[IV_NEXT:%.*]], [[GUARDED:%.*]] ]
; CHECK-NEXT: [[GUARD_COND:%.*]] = icmp slt i32 [[IV]], [[N]]
-; CHECK-NEXT: [[WIDENABLE_COND:%.*]] = call i1 @llvm.experimental.widenable.condition()
; CHECK-NEXT: [[EXIPLICIT_GUARD_COND:%.*]] = and i1 [[GUARD_COND]], [[WIDENABLE_COND]]
; CHECK-NEXT: br i1 [[EXIPLICIT_GUARD_COND]], label [[GUARDED]], label [[DEOPT:%.*]], !prof !0
; CHECK: deopt: