[llvm] 0eb45cd - (NFC)[ConstantFold][InstSimplify] add tests for folding load for patterned arrays and structs
via llvm-commits
llvm-commits at lists.llvm.org
Thu Feb 23 06:17:13 PST 2023
Author: khei4
Date: 2023-02-23T23:16:59+09:00
New Revision: 0eb45cd081e4ad8c496aa8358082ef2644c6a50f
URL: https://github.com/llvm/llvm-project/commit/0eb45cd081e4ad8c496aa8358082ef2644c6a50f
DIFF: https://github.com/llvm/llvm-project/commit/0eb45cd081e4ad8c496aa8358082ef2644c6a50f.diff
LOG: (NFC)[ConstantFold][InstSimplify] add tests for folding load for patterned arrays and structs
Added:
llvm/test/Transforms/InstSimplify/load-patterned-aggregates.ll
Modified:
llvm/test/Transforms/InstSimplify/load.ll
Removed:
################################################################################
diff --git a/llvm/test/Transforms/InstSimplify/load-patterned-aggregates.ll b/llvm/test/Transforms/InstSimplify/load-patterned-aggregates.ll
new file mode 100644
index 0000000000000..82283648936cf
--- /dev/null
+++ b/llvm/test/Transforms/InstSimplify/load-patterned-aggregates.ll
@@ -0,0 +1,134 @@
+; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
+; RUN: opt < %s -passes=instsimplify -S | FileCheck %s
+target datalayout = "e-p:32:32:32-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:32:64-f32:32:32-f64:32:64-v64:64:64-v128:128:128-a0:0:64-f80:32:32-n8:16:32"
+ at constzeroarray = internal constant [4 x i32] zeroinitializer
+
+ at constarray = internal constant [8 x i8] c"\01\00\01\00\01\00\01\00", align 4
+ at conststruct = internal constant <{[8 x i8]}> <{[8 x i8] c"\01\00\01\00\01\00\01\00"}>, align 4
+
+define i32 @load_gep_const_zero_array(i64 %idx) {
+; CHECK-LABEL: @load_gep_const_zero_array(
+; CHECK-NEXT: ret i32 0
+;
+ %gep = getelementptr inbounds [4 x i32], ptr @constzeroarray, i64 0, i64 %idx
+ %load = load i32, ptr %gep
+ ret i32 %load
+}
+
+define i8 @load_i8_multi_gep_const_zero_array(i64 %idx1, i64 %idx2) {
+; CHECK-LABEL: @load_i8_multi_gep_const_zero_array(
+; CHECK-NEXT: ret i8 0
+;
+ %gep1 = getelementptr inbounds i8, ptr @constzeroarray, i64 %idx1
+ %gep = getelementptr inbounds i8, ptr %gep1, i64 %idx2
+ %load = load i8, ptr %gep
+ ret i8 %load
+}
+
+
+define i32 @load_gep_const_patterned_array(i64 %idx) {
+; CHECK-LABEL: @load_gep_const_patterned_array(
+; CHECK-NEXT: [[GEP:%.*]] = getelementptr inbounds [4 x i32], ptr @constarray, i64 0, i64 [[IDX:%.*]]
+; CHECK-NEXT: [[LOAD:%.*]] = load i32, ptr [[GEP]], align 4
+; CHECK-NEXT: ret i32 [[LOAD]]
+;
+ %gep = getelementptr inbounds [4 x i32], ptr @constarray, i64 0, i64 %idx
+ %load = load i32, ptr %gep
+ ret i32 %load
+}
+
+define i8 @load_i8_multi_gep_const_array(i64 %idx1, i64 %idx2) {
+; CHECK-LABEL: @load_i8_multi_gep_const_array(
+; CHECK-NEXT: [[GEP1:%.*]] = getelementptr inbounds i8, ptr @constarray, i64 [[IDX1:%.*]]
+; CHECK-NEXT: [[GEP:%.*]] = getelementptr inbounds i8, ptr [[GEP1]], i64 [[IDX2:%.*]]
+; CHECK-NEXT: [[LOAD:%.*]] = load i8, ptr [[GEP]], align 1
+; CHECK-NEXT: ret i8 [[LOAD]]
+;
+ %gep1 = getelementptr inbounds i8, ptr @constarray, i64 %idx1
+ %gep = getelementptr inbounds i8, ptr %gep1, i64 %idx2
+ %load = load i8, ptr %gep
+ ret i8 %load
+}
+
+; TODO: this should be ret i8 1
+define i8 @gep_load_i8_align2(i64 %idx){
+; CHECK-LABEL: @gep_load_i8_align2(
+; CHECK-NEXT: [[TMP1:%.*]] = getelementptr inbounds i8, ptr @constarray, i64 [[IDX:%.*]]
+; CHECK-NEXT: [[TMP2:%.*]] = load i8, ptr [[TMP1]], align 2
+; CHECK-NEXT: ret i8 [[TMP2]]
+;
+ %1 = getelementptr inbounds i8, ptr @constarray, i64 %idx
+ %2 = load i8, ptr %1, align 2
+ ret i8 %2
+}
+
+; can't be folded
+define i8 @gep_load_i8_align1(i64 %idx){
+; CHECK-LABEL: @gep_load_i8_align1(
+; CHECK-NEXT: [[TMP1:%.*]] = getelementptr inbounds i8, ptr @constarray, i64 [[IDX:%.*]]
+; CHECK-NEXT: [[TMP2:%.*]] = load i8, ptr [[TMP1]], align 1
+; CHECK-NEXT: ret i8 [[TMP2]]
+;
+ %1 = getelementptr inbounds i8, ptr @constarray, i64 %idx
+ %2 = load i8, ptr %1, align 1
+ ret i8 %2
+}
+
+; TODO: this should be ret i8 65537 on the case for little endian
+define i32 @gep_i32_load_i32_align4(i64 %idx){
+; CHECK-LABEL: @gep_i32_load_i32_align4(
+; CHECK-NEXT: [[TMP1:%.*]] = getelementptr inbounds i32, ptr @constarray, i64 [[IDX:%.*]]
+; CHECK-NEXT: [[TMP2:%.*]] = load i32, ptr [[TMP1]], align 4
+; CHECK-NEXT: ret i32 [[TMP2]]
+;
+ %1 = getelementptr inbounds i32, ptr @constarray, i64 %idx
+ %2 = load i32, ptr %1, align 4
+ ret i32 %2
+}
+
+; TODO: this should be ret i8 65537 on the case for little endian
+define i32 @gep_i32_load_i32_align4_struct(i64 %idx){
+; CHECK-LABEL: @gep_i32_load_i32_align4_struct(
+; CHECK-NEXT: [[TMP1:%.*]] = getelementptr inbounds i32, ptr @conststruct, i64 [[IDX:%.*]]
+; CHECK-NEXT: [[TMP2:%.*]] = load i32, ptr [[TMP1]], align 4
+; CHECK-NEXT: ret i32 [[TMP2]]
+;
+ %1 = getelementptr inbounds i32, ptr @conststruct, i64 %idx
+ %2 = load i32, ptr %1, align 4
+ ret i32 %2
+}
+
+; can't be folded
+define i32 @gep_i8_load_i32_align1(i64 %idx){
+; CHECK-LABEL: @gep_i8_load_i32_align1(
+; CHECK-NEXT: [[TMP1:%.*]] = getelementptr inbounds i8, ptr @constarray, i64 [[IDX:%.*]]
+; CHECK-NEXT: [[TMP2:%.*]] = load i32, ptr [[TMP1]], align 1
+; CHECK-NEXT: ret i32 [[TMP2]]
+;
+ %1 = getelementptr inbounds i8, ptr @constarray, i64 %idx
+ %2 = load i32, ptr %1, align 1
+ ret i32 %2
+}
+
+; can't be folded
+define i32 @gep_i8_load_i32_align1_struct(i64 %idx){
+; CHECK-LABEL: @gep_i8_load_i32_align1_struct(
+; CHECK-NEXT: [[TMP1:%.*]] = getelementptr inbounds i8, ptr @conststruct, i64 [[IDX:%.*]]
+; CHECK-NEXT: [[TMP2:%.*]] = load i32, ptr [[TMP1]], align 1
+; CHECK-NEXT: ret i32 [[TMP2]]
+;
+ %1 = getelementptr inbounds i8, ptr @conststruct, i64 %idx
+ %2 = load i32, ptr %1, align 1
+ ret i32 %2
+}
+; TODO: This could be folded but need to see GEP source types
+define i32 @gep_i16_load_i32_align1(i64 %idx){
+; CHECK-LABEL: @gep_i16_load_i32_align1(
+; CHECK-NEXT: [[TMP1:%.*]] = getelementptr inbounds i16, ptr @constarray, i64 [[IDX:%.*]]
+; CHECK-NEXT: [[TMP2:%.*]] = load i32, ptr [[TMP1]], align 1
+; CHECK-NEXT: ret i32 [[TMP2]]
+;
+ %1 = getelementptr inbounds i16, ptr @constarray, i64 %idx
+ %2 = load i32, ptr %1, align 1
+ ret i32 %2
+}
diff --git a/llvm/test/Transforms/InstSimplify/load.ll b/llvm/test/Transforms/InstSimplify/load.ll
index 21a6452960adb..2e2b1b14ddd0f 100644
--- a/llvm/test/Transforms/InstSimplify/load.ll
+++ b/llvm/test/Transforms/InstSimplify/load.ll
@@ -4,11 +4,6 @@
@zeroinit = constant {} zeroinitializer
@poison = constant {} poison
- at constzeroarray = internal constant [4 x i32] zeroinitializer
-
- at constarray = internal constant [4 x i32] [i32 1, i32 1, i32 1, i32 1]
- at constarrayi8 = internal constant [2 x i8] [i8 1, i8 1]
-
define i32 @crash_on_zeroinit() {
; CHECK-LABEL: @crash_on_zeroinit(
; CHECK-NEXT: ret i32 poison
@@ -45,46 +40,3 @@ define <3 x float> @load_vec3() {
%1 = load <3 x float>, ptr getelementptr inbounds (<3 x float>, ptr @constvec, i64 1)
ret <3 x float> %1
}
-
-define i32 @load_gep_const_zero_array(i64 %idx) {
-; CHECK-LABEL: @load_gep_const_zero_array(
-; CHECK-NEXT: ret i32 0
-;
- %gep = getelementptr inbounds [4 x i32], ptr @constzeroarray, i64 0, i64 %idx
- %load = load i32, ptr %gep
- ret i32 %load
-}
-
-define i8 @load_i8_multi_gep_const_zero_array(i64 %idx1, i64 %idx2) {
-; CHECK-LABEL: @load_i8_multi_gep_const_zero_array(
-; CHECK-NEXT: ret i8 0
-;
- %gep1 = getelementptr inbounds i8, ptr @constzeroarray, i64 %idx1
- %gep = getelementptr inbounds i8, ptr %gep1, i64 %idx2
- %load = load i8, ptr %gep
- ret i8 %load
-}
-
-define i32 @load_gep_const_array(i64 %idx) {
-; CHECK-LABEL: @load_gep_const_array(
-; CHECK-NEXT: [[GEP:%.*]] = getelementptr inbounds [4 x i32], ptr @constarray, i64 0, i64 [[IDX:%.*]]
-; CHECK-NEXT: [[LOAD:%.*]] = load i32, ptr [[GEP]], align 4
-; CHECK-NEXT: ret i32 [[LOAD]]
-;
- %gep = getelementptr inbounds [4 x i32], ptr @constarray, i64 0, i64 %idx
- %load = load i32, ptr %gep
- ret i32 %load
-}
-
-define i8 @load_i8_multi_gep_const_array(i64 %idx1, i64 %idx2) {
-; CHECK-LABEL: @load_i8_multi_gep_const_array(
-; CHECK-NEXT: [[GEP1:%.*]] = getelementptr inbounds i8, ptr @constarrayi8, i64 [[IDX1:%.*]]
-; CHECK-NEXT: [[GEP:%.*]] = getelementptr inbounds i8, ptr [[GEP1]], i64 [[IDX2:%.*]]
-; CHECK-NEXT: [[LOAD:%.*]] = load i8, ptr [[GEP]], align 1
-; CHECK-NEXT: ret i8 [[LOAD]]
-;
- %gep1 = getelementptr inbounds i8, ptr @constarrayi8, i64 %idx1
- %gep = getelementptr inbounds i8, ptr %gep1, i64 %idx2
- %load = load i8, ptr %gep
- ret i8 %load
-}
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