[llvm] 9711f6b - [GVN] Add additional tests for pointer replacement (NFC)
Nikita Popov via llvm-commits
llvm-commits at lists.llvm.org
Thu Jul 18 07:49:48 PDT 2024
Author: Nikita Popov
Date: 2024-07-18T16:49:40+02:00
New Revision: 9711f6bda1363eb3b8850ee67958ab90357db006
URL: https://github.com/llvm/llvm-project/commit/9711f6bda1363eb3b8850ee67958ab90357db006
DIFF: https://github.com/llvm/llvm-project/commit/9711f6bda1363eb3b8850ee67958ab90357db006.diff
LOG: [GVN] Add additional tests for pointer replacement (NFC)
Added:
Modified:
llvm/test/Transforms/GVN/condprop.ll
Removed:
################################################################################
diff --git a/llvm/test/Transforms/GVN/condprop.ll b/llvm/test/Transforms/GVN/condprop.ll
index 6402a23157729..02f4bb97d7ebd 100644
--- a/llvm/test/Transforms/GVN/condprop.ll
+++ b/llvm/test/Transforms/GVN/condprop.ll
@@ -804,5 +804,200 @@ bb5:
br label %bb5
}
+define void @select_same_obj(i1 %c, ptr %p, i64 %x) {
+; CHECK-LABEL: @select_same_obj(
+; CHECK-NEXT: entry:
+; CHECK-NEXT: [[P2:%.*]] = getelementptr i8, ptr [[P:%.*]], i64 [[X:%.*]]
+; CHECK-NEXT: [[P3:%.*]] = select i1 [[C:%.*]], ptr [[P]], ptr [[P2]]
+; CHECK-NEXT: [[CMP:%.*]] = icmp eq ptr [[P]], [[P3]]
+; CHECK-NEXT: br i1 [[CMP]], label [[IF:%.*]], label [[EXIT:%.*]]
+; CHECK: if:
+; CHECK-NEXT: call void @use_ptr(ptr [[P]])
+; CHECK-NEXT: call void @use_ptr(ptr [[P3]])
+; CHECK-NEXT: ret void
+; CHECK: exit:
+; CHECK-NEXT: ret void
+;
+entry:
+ %p2 = getelementptr i8, ptr %p, i64 %x
+ %p3 = select i1 %c, ptr %p, ptr %p2
+ %cmp = icmp eq ptr %p, %p3
+ br i1 %cmp, label %if, label %exit
+
+if:
+ call void @use_ptr(ptr %p)
+ call void @use_ptr(ptr %p3)
+ ret void
+
+exit:
+ ret void
+}
+
+define void @select_
diff erent_obj(i1 %c, ptr %p, ptr %p2) {
+; CHECK-LABEL: @select_
diff erent_obj(
+; CHECK-NEXT: entry:
+; CHECK-NEXT: [[P3:%.*]] = select i1 [[C:%.*]], ptr [[P:%.*]], ptr [[P2:%.*]]
+; CHECK-NEXT: [[CMP:%.*]] = icmp eq ptr [[P]], [[P3]]
+; CHECK-NEXT: br i1 [[CMP]], label [[IF:%.*]], label [[EXIT:%.*]]
+; CHECK: if:
+; CHECK-NEXT: call void @use_ptr(ptr [[P]])
+; CHECK-NEXT: call void @use_ptr(ptr [[P3]])
+; CHECK-NEXT: ret void
+; CHECK: exit:
+; CHECK-NEXT: ret void
+;
+entry:
+ %p3 = select i1 %c, ptr %p, ptr %p2
+ %cmp = icmp eq ptr %p, %p3
+ br i1 %cmp, label %if, label %exit
+
+if:
+ call void @use_ptr(ptr %p)
+ call void @use_ptr(ptr %p3)
+ ret void
+
+exit:
+ ret void
+}
+
+define void @select_same_obj_is_select(i1 %c, ptr %p, ptr %p2, i64 %x) {
+; CHECK-LABEL: @select_same_obj_is_select(
+; CHECK-NEXT: entry:
+; CHECK-NEXT: [[P3:%.*]] = select i1 [[C:%.*]], ptr [[P:%.*]], ptr [[P2:%.*]]
+; CHECK-NEXT: [[P4:%.*]] = getelementptr i8, ptr [[P3]], i64 [[X:%.*]]
+; CHECK-NEXT: [[CMP:%.*]] = icmp eq ptr [[P3]], [[P4]]
+; CHECK-NEXT: br i1 [[CMP]], label [[IF:%.*]], label [[EXIT:%.*]]
+; CHECK: if:
+; CHECK-NEXT: call void @use_ptr(ptr [[P3]])
+; CHECK-NEXT: call void @use_ptr(ptr [[P3]])
+; CHECK-NEXT: ret void
+; CHECK: exit:
+; CHECK-NEXT: ret void
+;
+entry:
+ %p3 = select i1 %c, ptr %p, ptr %p2
+ %p4 = getelementptr i8, ptr %p3, i64 %x
+ %cmp = icmp eq ptr %p3, %p4
+ br i1 %cmp, label %if, label %exit
+
+if:
+ call void @use_ptr(ptr %p3)
+ call void @use_ptr(ptr %p4)
+ ret void
+
+exit:
+ ret void
+}
+
+define void @phi_same_obj(i1 %c, ptr %p, i64 %x) {
+; CHECK-LABEL: @phi_same_obj(
+; CHECK-NEXT: entry:
+; CHECK-NEXT: [[P2:%.*]] = getelementptr i8, ptr [[P:%.*]], i64 [[X:%.*]]
+; CHECK-NEXT: br i1 [[C:%.*]], label [[IF:%.*]], label [[JOIN:%.*]]
+; CHECK: if:
+; CHECK-NEXT: br label [[JOIN]]
+; CHECK: join:
+; CHECK-NEXT: [[P3:%.*]] = phi ptr [ [[P]], [[IF]] ], [ [[P2]], [[ENTRY:%.*]] ]
+; CHECK-NEXT: [[CMP:%.*]] = icmp eq ptr [[P]], [[P3]]
+; CHECK-NEXT: br i1 [[CMP]], label [[IF2:%.*]], label [[EXIT:%.*]]
+; CHECK: if2:
+; CHECK-NEXT: call void @use_ptr(ptr [[P]])
+; CHECK-NEXT: call void @use_ptr(ptr [[P3]])
+; CHECK-NEXT: ret void
+; CHECK: exit:
+; CHECK-NEXT: ret void
+;
+entry:
+ %p2 = getelementptr i8, ptr %p, i64 %x
+ br i1 %c, label %if, label %join
+
+if:
+ br label %join
+
+join:
+ %p3 = phi ptr [ %p, %if ], [ %p2, %entry ]
+ %cmp = icmp eq ptr %p, %p3
+ br i1 %cmp, label %if2, label %exit
+
+if2:
+ call void @use_ptr(ptr %p)
+ call void @use_ptr(ptr %p3)
+ ret void
+
+exit:
+ ret void
+}
+
+define void @phi_
diff erent_obj(i1 %c, ptr %p, ptr %p2) {
+; CHECK-LABEL: @phi_
diff erent_obj(
+; CHECK-NEXT: entry:
+; CHECK-NEXT: br i1 [[C:%.*]], label [[IF:%.*]], label [[JOIN:%.*]]
+; CHECK: if:
+; CHECK-NEXT: br label [[JOIN]]
+; CHECK: join:
+; CHECK-NEXT: [[P3:%.*]] = phi ptr [ [[P:%.*]], [[IF]] ], [ [[P2:%.*]], [[ENTRY:%.*]] ]
+; CHECK-NEXT: [[CMP:%.*]] = icmp eq ptr [[P]], [[P3]]
+; CHECK-NEXT: br i1 [[CMP]], label [[IF2:%.*]], label [[EXIT:%.*]]
+; CHECK: if2:
+; CHECK-NEXT: call void @use_ptr(ptr [[P]])
+; CHECK-NEXT: call void @use_ptr(ptr [[P3]])
+; CHECK-NEXT: ret void
+; CHECK: exit:
+; CHECK-NEXT: ret void
+;
+entry:
+ br i1 %c, label %if, label %join
+
+if:
+ br label %join
+
+join:
+ %p3 = phi ptr [ %p, %if ], [ %p2, %entry ]
+ %cmp = icmp eq ptr %p, %p3
+ br i1 %cmp, label %if2, label %exit
+
+if2:
+ call void @use_ptr(ptr %p)
+ call void @use_ptr(ptr %p3)
+ ret void
+
+exit:
+ ret void
+}
+
+define void @phi_same_obj_cycle(i1 %c, ptr %p, i64 %x) {
+; CHECK-LABEL: @phi_same_obj_cycle(
+; CHECK-NEXT: entry:
+; CHECK-NEXT: br label [[LOOP:%.*]]
+; CHECK: loop:
+; CHECK-NEXT: [[P_IV:%.*]] = phi ptr [ [[P:%.*]], [[ENTRY:%.*]] ], [ [[P_NEXT:%.*]], [[LOOP_LATCH:%.*]] ]
+; CHECK-NEXT: [[P_NEXT]] = getelementptr i8, ptr [[P_IV]], i64 [[X:%.*]]
+; CHECK-NEXT: [[CMP:%.*]] = icmp eq ptr [[P_IV]], [[P]]
+; CHECK-NEXT: br i1 [[CMP]], label [[IF:%.*]], label [[LOOP_LATCH]]
+; CHECK: if:
+; CHECK-NEXT: call void @use_ptr(ptr [[P_IV]])
+; CHECK-NEXT: call void @use_ptr(ptr [[P]])
+; CHECK-NEXT: br label [[LOOP_LATCH]]
+; CHECK: loop.latch:
+; CHECK-NEXT: br label [[LOOP]]
+;
+entry:
+ br label %loop
+
+loop:
+ %p.iv = phi ptr [ %p, %entry ], [ %p.next, %loop.latch ]
+ %p.next = getelementptr i8, ptr %p.iv, i64 %x
+ %cmp = icmp eq ptr %p.iv, %p
+ br i1 %cmp, label %if, label %loop.latch
+
+if:
+ call void @use_ptr(ptr %p.iv)
+ call void @use_ptr(ptr %p)
+ br label %loop.latch
+
+loop.latch:
+ br label %loop
+}
+
declare void @use_bool(i1)
declare void @use_ptr(ptr)
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