[llvm] f9d1895 - [AggressiveInstCombine] Fold strcmp for short string literals tests (NFC)
Nikita Popov via llvm-commits
llvm-commits at lists.llvm.org
Wed Jul 19 07:54:00 PDT 2023
Author: Maksim Kita
Date: 2023-07-19T16:53:48+02:00
New Revision: f9d1895d65a1f18fbcbd7c39ce6a4ab35d3e8778
URL: https://github.com/llvm/llvm-project/commit/f9d1895d65a1f18fbcbd7c39ce6a4ab35d3e8778
DIFF: https://github.com/llvm/llvm-project/commit/f9d1895d65a1f18fbcbd7c39ce6a4ab35d3e8778.diff
LOG: [AggressiveInstCombine] Fold strcmp for short string literals tests (NFC)
Precommit tests for D154725.
Differential Revision: https://reviews.llvm.org/D155053
Added:
llvm/test/Transforms/AggressiveInstCombine/strcmp.ll
Modified:
Removed:
################################################################################
diff --git a/llvm/test/Transforms/AggressiveInstCombine/strcmp.ll b/llvm/test/Transforms/AggressiveInstCombine/strcmp.ll
new file mode 100644
index 00000000000000..9b33742122a82a
--- /dev/null
+++ b/llvm/test/Transforms/AggressiveInstCombine/strcmp.ll
@@ -0,0 +1,164 @@
+; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
+; RUN: opt < %s -passes=aggressive-instcombine -S | FileCheck %s
+
+declare i32 @strcmp(ptr, ptr)
+
+ at s0 = constant [1 x i8] c"\00"
+ at s1 = constant [2 x i8] c"0\00"
+ at s2 = constant [3 x i8] c"01\00"
+ at s3 = constant [4 x i8] c"012\00"
+ at s4 = constant [5 x i8] c"0123\00"
+
+; Expand strcmp(C, "x").
+
+define i1 @expand_strcmp_s0(ptr %C) {
+; CHECK-LABEL: @expand_strcmp_s0(
+; CHECK-NEXT: [[CALL:%.*]] = call i32 @strcmp(ptr [[C:%.*]], ptr @s0)
+; CHECK-NEXT: [[CMP:%.*]] = icmp eq i32 [[CALL]], 0
+; CHECK-NEXT: ret i1 [[CMP]]
+;
+ %call = call i32 @strcmp(ptr %C, ptr @s0)
+ %cmp = icmp eq i32 %call, 0
+ ret i1 %cmp
+}
+
+define i1 @expand_strcmp_eq_s1(ptr %C) {
+; CHECK-LABEL: @expand_strcmp_eq_s1(
+; CHECK-NEXT: [[CALL:%.*]] = call i32 @strcmp(ptr [[C:%.*]], ptr @s1)
+; CHECK-NEXT: [[CMP:%.*]] = icmp eq i32 [[CALL]], 0
+; CHECK-NEXT: ret i1 [[CMP]]
+;
+ %call = call i32 @strcmp(ptr %C, ptr @s1)
+ %cmp = icmp eq i32 %call, 0
+ ret i1 %cmp
+}
+
+define i1 @expand_strcmp_eq_s1_commuted(ptr %C) {
+; CHECK-LABEL: @expand_strcmp_eq_s1_commuted(
+; CHECK-NEXT: [[CALL:%.*]] = call i32 @strcmp(ptr @s1, ptr [[C:%.*]])
+; CHECK-NEXT: [[CMP:%.*]] = icmp eq i32 [[CALL]], 0
+; CHECK-NEXT: ret i1 [[CMP]]
+;
+ %call = call i32 @strcmp(ptr @s1, ptr %C)
+ %cmp = icmp eq i32 %call, 0
+ ret i1 %cmp
+}
+
+define i1 @expand_strcmp_ne_s1(ptr %C) {
+; CHECK-LABEL: @expand_strcmp_ne_s1(
+; CHECK-NEXT: [[CALL:%.*]] = call i32 @strcmp(ptr [[C:%.*]], ptr @s1)
+; CHECK-NEXT: [[CMP:%.*]] = icmp ne i32 [[CALL]], 0
+; CHECK-NEXT: ret i1 [[CMP]]
+;
+ %call = call i32 @strcmp(ptr %C, ptr @s1)
+ %cmp = icmp ne i32 %call, 0
+ ret i1 %cmp
+}
+
+define i1 @expand_strcmp_sgt_s1(ptr %C) {
+; CHECK-LABEL: @expand_strcmp_sgt_s1(
+; CHECK-NEXT: [[CALL:%.*]] = call i32 @strcmp(ptr [[C:%.*]], ptr @s1)
+; CHECK-NEXT: [[CMP:%.*]] = icmp sgt i32 [[CALL]], 0
+; CHECK-NEXT: ret i1 [[CMP]]
+;
+ %call = call i32 @strcmp(ptr %C, ptr @s1)
+ %cmp = icmp sgt i32 %call, 0
+ ret i1 %cmp
+}
+
+define i1 @expand_strcmp_sge_s1(ptr %C) {
+; CHECK-LABEL: @expand_strcmp_sge_s1(
+; CHECK-NEXT: [[CALL:%.*]] = call i32 @strcmp(ptr [[C:%.*]], ptr @s1)
+; CHECK-NEXT: [[CMP:%.*]] = icmp sge i32 [[CALL]], 0
+; CHECK-NEXT: ret i1 [[CMP]]
+;
+ %call = call i32 @strcmp(ptr %C, ptr @s1)
+ %cmp = icmp sge i32 %call, 0
+ ret i1 %cmp
+}
+
+define i1 @expand_strcmp_slt_s1(ptr %C) {
+; CHECK-LABEL: @expand_strcmp_slt_s1(
+; CHECK-NEXT: [[CALL:%.*]] = call i32 @strcmp(ptr [[C:%.*]], ptr @s1)
+; CHECK-NEXT: [[CMP:%.*]] = icmp slt i32 [[CALL]], 0
+; CHECK-NEXT: ret i1 [[CMP]]
+;
+ %call = call i32 @strcmp(ptr %C, ptr @s1)
+ %cmp = icmp slt i32 %call, 0
+ ret i1 %cmp
+}
+
+define i1 @expand_strcmp_sle_s1(ptr %C) {
+; CHECK-LABEL: @expand_strcmp_sle_s1(
+; CHECK-NEXT: [[CALL:%.*]] = call i32 @strcmp(ptr [[C:%.*]], ptr @s1)
+; CHECK-NEXT: [[CMP:%.*]] = icmp sle i32 [[CALL]], 0
+; CHECK-NEXT: ret i1 [[CMP]]
+;
+ %call = call i32 @strcmp(ptr %C, ptr @s1)
+ %cmp = icmp sle i32 %call, 0
+ ret i1 %cmp
+}
+
+define i1 @expand_strcmp_s1_fail_1(ptr %C) {
+; CHECK-LABEL: @expand_strcmp_s1_fail_1(
+; CHECK-NEXT: [[CALL:%.*]] = call i32 @strcmp(ptr [[C:%.*]], ptr @s1)
+; CHECK-NEXT: [[CMP:%.*]] = icmp eq i32 [[CALL]], 1
+; CHECK-NEXT: ret i1 [[CMP]]
+;
+ %call = call i32 @strcmp(ptr %C, ptr @s1)
+ %cmp = icmp eq i32 %call, 1
+ ret i1 %cmp
+}
+
+define i1 @expand_strcmp_s1_fail_2(ptr %C) {
+; CHECK-LABEL: @expand_strcmp_s1_fail_2(
+; CHECK-NEXT: [[CALL:%.*]] = call i32 @strcmp(ptr @s1, ptr @s1)
+; CHECK-NEXT: [[CMP:%.*]] = icmp eq i32 [[CALL]], 0
+; CHECK-NEXT: ret i1 [[CMP]]
+;
+ %call = call i32 @strcmp(ptr @s1, ptr @s1)
+ %cmp = icmp eq i32 %call, 0
+ ret i1 %cmp
+}
+
+define i32 @expand_strcmp_s1_fail_3(ptr %C) {
+; CHECK-LABEL: @expand_strcmp_s1_fail_3(
+; CHECK-NEXT: [[CALL:%.*]] = call i32 @strcmp(ptr [[C:%.*]], ptr @s1)
+; CHECK-NEXT: ret i32 [[CALL]]
+;
+ %call = call i32 @strcmp(ptr %C, ptr @s1)
+ ret i32 %call
+}
+
+define i1 @expand_strcmp_s2(ptr %C) {
+; CHECK-LABEL: @expand_strcmp_s2(
+; CHECK-NEXT: [[CALL:%.*]] = call i32 @strcmp(ptr [[C:%.*]], ptr @s2)
+; CHECK-NEXT: [[CMP:%.*]] = icmp eq i32 [[CALL]], 0
+; CHECK-NEXT: ret i1 [[CMP]]
+;
+ %call = call i32 @strcmp(ptr %C, ptr @s2)
+ %cmp = icmp eq i32 %call, 0
+ ret i1 %cmp
+}
+
+define i1 @expand_strcmp_s3(ptr %C) {
+; CHECK-LABEL: @expand_strcmp_s3(
+; CHECK-NEXT: [[CALL:%.*]] = call i32 @strcmp(ptr [[C:%.*]], ptr @s3)
+; CHECK-NEXT: [[CMP:%.*]] = icmp eq i32 [[CALL]], 0
+; CHECK-NEXT: ret i1 [[CMP]]
+;
+ %call = call i32 @strcmp(ptr %C, ptr @s3)
+ %cmp = icmp eq i32 %call, 0
+ ret i1 %cmp
+}
+
+define i1 @expand_strcmp_s4(ptr %C) {
+; CHECK-LABEL: @expand_strcmp_s4(
+; CHECK-NEXT: [[CALL:%.*]] = call i32 @strcmp(ptr [[C:%.*]], ptr @s4)
+; CHECK-NEXT: [[CMP:%.*]] = icmp eq i32 [[CALL]], 0
+; CHECK-NEXT: ret i1 [[CMP]]
+;
+ %call = call i32 @strcmp(ptr %C, ptr @s4)
+ %cmp = icmp eq i32 %call, 0
+ ret i1 %cmp
+}
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