[InstCombine] Add tests for fold of icmp inttoptr, inttoptr. NFC

Author: citymarina

llvm/test/Transforms/InstCombine/icmp-inttoptr.ll

@@ -0,0 +1,106 @@
+; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
+; RUN: opt < %s -passes=instcombine -S | FileCheck %s
+
+declare void @use_ptr(ptr)
+
+define i1 @inttoptr(i64 %x, i64 %y) {
+; CHECK-LABEL: @inttoptr(
+; CHECK-NEXT:    [[XPTR:%.*]] = inttoptr i64 [[X:%.*]] to ptr
+; CHECK-NEXT:    [[YPTR:%.*]] = inttoptr i64 [[Y:%.*]] to ptr
+; CHECK-NEXT:    [[CMP:%.*]] = icmp eq ptr [[XPTR]], [[YPTR]]
+; CHECK-NEXT:    ret i1 [[CMP]]
+;
+  %xptr = inttoptr i64 %x to ptr
+  %yptr = inttoptr i64 %y to ptr
+  %cmp = icmp eq ptr %xptr, %yptr
+  ret i1 %cmp
+}
+
+define i1 @inttoptr_constant(i64 %x) {
+; CHECK-LABEL: @inttoptr_constant(
+; CHECK-NEXT:    [[XPTR:%.*]] = inttoptr i64 [[X:%.*]] to ptr
+; CHECK-NEXT:    [[CMP:%.*]] = icmp eq ptr [[XPTR]], inttoptr (i64 42 to ptr)
+; CHECK-NEXT:    ret i1 [[CMP]]
+;
+  %xptr = inttoptr i64 %x to ptr
+  %cmp = icmp eq ptr %xptr, inttoptr (i64 42 to ptr)
+  ret i1 %cmp
+}
+
+define <2 x i1> @inttoptr_vector(<2 x i64> %x, <2 x i64> %y) {
+; CHECK-LABEL: @inttoptr_vector(
+; CHECK-NEXT:    [[XPTR:%.*]] = inttoptr <2 x i64> [[X:%.*]] to <2 x ptr>
+; CHECK-NEXT:    [[YPTR:%.*]] = inttoptr <2 x i64> [[Y:%.*]] to <2 x ptr>
+; CHECK-NEXT:    [[CMP:%.*]] = icmp eq <2 x ptr> [[XPTR]], [[YPTR]]
+; CHECK-NEXT:    ret <2 x i1> [[CMP]]
+;
+  %xptr = inttoptr <2 x i64> %x to <2 x ptr>
+  %yptr = inttoptr <2 x i64> %y to <2 x ptr>
+  %cmp = icmp eq <2 x ptr> %xptr, %yptr
+  ret <2 x i1> %cmp
+}
+
+define <2 x i1> @inttoptr_vector_constant(<2 x i64> %x) {
+; CHECK-LABEL: @inttoptr_vector_constant(
+; CHECK-NEXT:    [[XPTR:%.*]] = inttoptr <2 x i64> [[X:%.*]] to <2 x ptr>
+; CHECK-NEXT:    [[CMP:%.*]] = icmp eq <2 x ptr> [[XPTR]], <ptr inttoptr (i64 42 to ptr), ptr inttoptr (i64 123 to ptr)>
+; CHECK-NEXT:    ret <2 x i1> [[CMP]]
+;
+  %xptr = inttoptr <2 x i64> %x to <2 x ptr>
+  %cmp = icmp eq <2 x ptr> %xptr, inttoptr (<2 x i64> <i64 42, i64 123> to <2 x ptr>)
+  ret <2 x i1> %cmp
+}
+
+define i1 @inttoptr_size_mismatch(i200 %x, i64 %y) {
+; CHECK-LABEL: @inttoptr_size_mismatch(
+; CHECK-NEXT:    [[TMP1:%.*]] = trunc i200 [[X:%.*]] to i64
+; CHECK-NEXT:    [[XPTR:%.*]] = inttoptr i64 [[TMP1]] to ptr
+; CHECK-NEXT:    [[YPTR:%.*]] = inttoptr i64 [[Y:%.*]] to ptr
+; CHECK-NEXT:    [[CMP:%.*]] = icmp eq ptr [[XPTR]], [[YPTR]]
+; CHECK-NEXT:    ret i1 [[CMP]]
+;
+  %xptr = inttoptr i200 %x to ptr
+  %yptr = inttoptr i64 %y to ptr
+  %cmp = icmp eq ptr %xptr, %yptr
+  ret i1 %cmp
+}
+
+define <2 x i1> @inttoptr_vector_constant_size_mismatch(<2 x i64> %x) {
+; CHECK-LABEL: @inttoptr_vector_constant_size_mismatch(
+; CHECK-NEXT:    [[XPTR:%.*]] = inttoptr <2 x i64> [[X:%.*]] to <2 x ptr>
+; CHECK-NEXT:    [[CMP:%.*]] = icmp eq <2 x ptr> [[XPTR]], <ptr inttoptr (i9 42 to ptr), ptr inttoptr (i9 123 to ptr)>
+; CHECK-NEXT:    ret <2 x i1> [[CMP]]
+;
+  %xptr = inttoptr <2 x i64> %x to <2 x ptr>
+  %cmp = icmp eq <2 x ptr> %xptr, inttoptr (<2x i9> <i9 42, i9 123> to <2 x ptr>)
+  ret <2 x i1> %cmp
+}
+
+define i1 @inttoptr_oneside(i64 %x, ptr %y) {
+; CHECK-LABEL: @inttoptr_oneside(
+; CHECK-NEXT:    [[XPTR:%.*]] = inttoptr i64 [[X:%.*]] to ptr
+; CHECK-NEXT:    [[CMP:%.*]] = icmp eq ptr [[Y:%.*]], [[XPTR]]
+; CHECK-NEXT:    ret i1 [[CMP]]
+;
+  %xptr = inttoptr i64 %x to ptr
+  %cmp = icmp eq ptr %xptr, %y
+  ret i1 %cmp
+}
+
+define i1 @inttoptr_used(i64 %x, i64 %y) {
+; CHECK-LABEL: @inttoptr_used(
+; CHECK-NEXT:    [[XPTR:%.*]] = inttoptr i64 [[X:%.*]] to ptr
+; CHECK-NEXT:    [[YPTR:%.*]] = inttoptr i64 [[Y:%.*]] to ptr
+; CHECK-NEXT:    call void @use_ptr(ptr [[XPTR]])
+; CHECK-NEXT:    call void @use_ptr(ptr [[YPTR]])
+; CHECK-NEXT:    [[CMP:%.*]] = icmp ugt ptr [[XPTR]], [[YPTR]]
+; CHECK-NEXT:    ret i1 [[CMP]]
+;
+  %xptr = inttoptr i64 %x to ptr
+  %yptr = inttoptr i64 %y to ptr
+  call void @use_ptr(ptr %xptr)
+  call void @use_ptr(ptr %yptr)
+  %cmp = icmp ugt ptr %xptr, %yptr
+  ret i1 %cmp
+}
+