[llvm] 58f9cea - [Test] More tests on range checks
Max Kazantsev via llvm-commits
llvm-commits at lists.llvm.org
Mon Nov 16 05:10:29 PST 2020
Author: Max Kazantsev
Date: 2020-11-16T20:10:10+07:00
New Revision: 58f9ceaad6fe4ec26a1a311b75b4eef0633a37cf
URL: https://github.com/llvm/llvm-project/commit/58f9ceaad6fe4ec26a1a311b75b4eef0633a37cf
DIFF: https://github.com/llvm/llvm-project/commit/58f9ceaad6fe4ec26a1a311b75b4eef0633a37cf.diff
LOG: [Test] More tests on range checks
Added:
Modified:
llvm/test/Transforms/IndVarSimplify/predicated_ranges.ll
Removed:
################################################################################
diff --git a/llvm/test/Transforms/IndVarSimplify/predicated_ranges.ll b/llvm/test/Transforms/IndVarSimplify/predicated_ranges.ll
index a02bbc41fab2..27b16027664d 100644
--- a/llvm/test/Transforms/IndVarSimplify/predicated_ranges.ll
+++ b/llvm/test/Transforms/IndVarSimplify/predicated_ranges.ll
@@ -831,4 +831,155 @@ fail:
unreachable
}
+define void @test_can_predicate_simple_unsigned_
diff erent_start(i32 %start, i32* %p, i32* %arr) {
+; CHECK-LABEL: @test_can_predicate_simple_unsigned_
diff erent_start(
+; CHECK-NEXT: preheader:
+; CHECK-NEXT: [[LEN:%.*]] = load i32, i32* [[P:%.*]], align 4
+; CHECK-NEXT: br label [[LOOP:%.*]]
+; CHECK: loop:
+; CHECK-NEXT: [[IV:%.*]] = phi i32 [ [[START:%.*]], [[PREHEADER:%.*]] ], [ [[IV_NEXT:%.*]], [[BACKEDGE:%.*]] ]
+; CHECK-NEXT: [[ZERO_COND:%.*]] = icmp eq i32 [[IV]], 0
+; CHECK-NEXT: br i1 [[ZERO_COND]], label [[EXIT:%.*]], label [[RANGE_CHECK_BLOCK:%.*]]
+; CHECK: range_check_block:
+; CHECK-NEXT: [[IV_NEXT]] = sub i32 [[IV]], 1
+; CHECK-NEXT: [[RANGE_CHECK:%.*]] = icmp ult i32 [[IV_NEXT]], [[LEN]]
+; CHECK-NEXT: br i1 [[RANGE_CHECK]], label [[BACKEDGE]], label [[FAIL:%.*]]
+; CHECK: backedge:
+; CHECK-NEXT: [[EL_PTR:%.*]] = getelementptr i32, i32* [[P]], i32 [[IV]]
+; CHECK-NEXT: [[EL:%.*]] = load i32, i32* [[EL_PTR]], align 4
+; CHECK-NEXT: [[LOOP_COND:%.*]] = icmp eq i32 [[EL]], 0
+; CHECK-NEXT: br i1 [[LOOP_COND]], label [[LOOP]], label [[EXIT]]
+; CHECK: exit:
+; CHECK-NEXT: ret void
+; CHECK: fail:
+; CHECK-NEXT: unreachable
+;
+preheader:
+ %len = load i32, i32* %p
+ br label %loop
+
+loop:
+ %iv = phi i32 [%start, %preheader], [%iv.next, %backedge]
+ %zero_cond = icmp eq i32 %iv, 0
+ br i1 %zero_cond, label %exit, label %range_check_block
+
+range_check_block:
+ %iv.next = sub i32 %iv, 1
+ %range_check = icmp ult i32 %iv.next, %len
+ br i1 %range_check, label %backedge, label %fail
+
+backedge:
+ %el.ptr = getelementptr i32, i32* %p, i32 %iv
+ %el = load i32, i32* %el.ptr
+ %loop.cond = icmp eq i32 %el, 0
+ br i1 %loop.cond, label %loop, label %exit
+
+exit:
+ ret void
+
+fail:
+ unreachable
+}
+
+define void @test_can_predicate_simple_unsigned_inverted_
diff erent_start(i32 %start, i32* %p, i32* %arr) {
+; CHECK-LABEL: @test_can_predicate_simple_unsigned_inverted_
diff erent_start(
+; CHECK-NEXT: preheader:
+; CHECK-NEXT: [[LEN:%.*]] = load i32, i32* [[P:%.*]], align 4
+; CHECK-NEXT: br label [[LOOP:%.*]]
+; CHECK: loop:
+; CHECK-NEXT: [[IV:%.*]] = phi i32 [ [[START:%.*]], [[PREHEADER:%.*]] ], [ [[IV_NEXT:%.*]], [[BACKEDGE:%.*]] ]
+; CHECK-NEXT: [[ZERO_COND:%.*]] = icmp eq i32 [[IV]], 0
+; CHECK-NEXT: br i1 [[ZERO_COND]], label [[EXIT:%.*]], label [[RANGE_CHECK_BLOCK:%.*]]
+; CHECK: range_check_block:
+; CHECK-NEXT: [[IV_NEXT]] = sub i32 [[IV]], 1
+; CHECK-NEXT: [[RANGE_CHECK:%.*]] = icmp uge i32 [[IV_NEXT]], [[LEN]]
+; CHECK-NEXT: br i1 [[RANGE_CHECK]], label [[FAIL:%.*]], label [[BACKEDGE]]
+; CHECK: backedge:
+; CHECK-NEXT: [[EL_PTR:%.*]] = getelementptr i32, i32* [[P]], i32 [[IV]]
+; CHECK-NEXT: [[EL:%.*]] = load i32, i32* [[EL_PTR]], align 4
+; CHECK-NEXT: [[LOOP_COND:%.*]] = icmp eq i32 [[EL]], 0
+; CHECK-NEXT: br i1 [[LOOP_COND]], label [[LOOP]], label [[EXIT]]
+; CHECK: exit:
+; CHECK-NEXT: ret void
+; CHECK: fail:
+; CHECK-NEXT: unreachable
+;
+preheader:
+ %len = load i32, i32* %p
+ br label %loop
+
+loop:
+ %iv = phi i32 [%start, %preheader], [%iv.next, %backedge]
+ %zero_cond = icmp eq i32 %iv, 0
+ br i1 %zero_cond, label %exit, label %range_check_block
+
+range_check_block:
+ %iv.next = sub i32 %iv, 1
+ %range_check = icmp uge i32 %iv.next, %len
+ br i1 %range_check, label %fail, label %backedge
+
+backedge:
+ %el.ptr = getelementptr i32, i32* %p, i32 %iv
+ %el = load i32, i32* %el.ptr
+ %loop.cond = icmp eq i32 %el, 0
+ br i1 %loop.cond, label %loop, label %exit
+
+exit:
+ ret void
+
+fail:
+ unreachable
+}
+
+
+define void @test_can_predicate_simple_signed_
diff erent_start(i32 %start, i32* %p, i32* %arr) {
+; CHECK-LABEL: @test_can_predicate_simple_signed_
diff erent_start(
+; CHECK-NEXT: preheader:
+; CHECK-NEXT: [[LEN:%.*]] = load i32, i32* [[P:%.*]], align 4
+; CHECK-NEXT: br label [[LOOP:%.*]]
+; CHECK: loop:
+; CHECK-NEXT: [[IV:%.*]] = phi i32 [ [[START:%.*]], [[PREHEADER:%.*]] ], [ [[IV_NEXT:%.*]], [[BACKEDGE:%.*]] ]
+; CHECK-NEXT: [[ZERO_COND:%.*]] = icmp eq i32 [[IV]], 0
+; CHECK-NEXT: br i1 [[ZERO_COND]], label [[EXIT:%.*]], label [[RANGE_CHECK_BLOCK:%.*]]
+; CHECK: range_check_block:
+; CHECK-NEXT: [[IV_NEXT]] = sub i32 [[IV]], 1
+; CHECK-NEXT: [[RANGE_CHECK:%.*]] = icmp slt i32 [[IV_NEXT]], [[LEN]]
+; CHECK-NEXT: br i1 [[RANGE_CHECK]], label [[BACKEDGE]], label [[FAIL:%.*]]
+; CHECK: backedge:
+; CHECK-NEXT: [[EL_PTR:%.*]] = getelementptr i32, i32* [[P]], i32 [[IV]]
+; CHECK-NEXT: [[EL:%.*]] = load i32, i32* [[EL_PTR]], align 4
+; CHECK-NEXT: [[LOOP_COND:%.*]] = icmp eq i32 [[EL]], 0
+; CHECK-NEXT: br i1 [[LOOP_COND]], label [[LOOP]], label [[EXIT]]
+; CHECK: exit:
+; CHECK-NEXT: ret void
+; CHECK: fail:
+; CHECK-NEXT: unreachable
+;
+preheader:
+ %len = load i32, i32* %p
+ br label %loop
+
+loop:
+ %iv = phi i32 [%start, %preheader], [%iv.next, %backedge]
+ %zero_cond = icmp eq i32 %iv, 0
+ br i1 %zero_cond, label %exit, label %range_check_block
+
+range_check_block:
+ %iv.next = sub i32 %iv, 1
+ %range_check = icmp slt i32 %iv.next, %len
+ br i1 %range_check, label %backedge, label %fail
+
+backedge:
+ %el.ptr = getelementptr i32, i32* %p, i32 %iv
+ %el = load i32, i32* %el.ptr
+ %loop.cond = icmp eq i32 %el, 0
+ br i1 %loop.cond, label %loop, label %exit
+
+exit:
+ ret void
+
+fail:
+ unreachable
+}
+
!0 = !{i32 0, i32 2147483647}
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