[llvm] be20ee6 - [ArgPromotion] Add test for volatile and atomic loads (NFC)
Nikita Popov via llvm-commits
llvm-commits at lists.llvm.org
Wed Feb 2 00:44:47 PST 2022
Author: Nikita Popov
Date: 2022-02-02T09:44:28+01:00
New Revision: be20ee67e561506adc02cec0d68752cafb052c18
URL: https://github.com/llvm/llvm-project/commit/be20ee67e561506adc02cec0d68752cafb052c18
DIFF: https://github.com/llvm/llvm-project/commit/be20ee67e561506adc02cec0d68752cafb052c18.diff
LOG: [ArgPromotion] Add test for volatile and atomic loads (NFC)
Argument promotion does handle these correctly (by not promoting
them), but there were no tests to ensure this.
Added:
llvm/test/Transforms/ArgumentPromotion/volatile-atomic.ll
Modified:
Removed:
################################################################################
diff --git a/llvm/test/Transforms/ArgumentPromotion/volatile-atomic.ll b/llvm/test/Transforms/ArgumentPromotion/volatile-atomic.ll
new file mode 100644
index 0000000000000..a8a86294c6a69
--- /dev/null
+++ b/llvm/test/Transforms/ArgumentPromotion/volatile-atomic.ll
@@ -0,0 +1,40 @@
+; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
+; RUN: opt -S -argpromotion < %s | FileCheck %s
+
+; Make sure volatile and atomic loads are not promoted.
+
+define internal i32 @callee_volatile(i32* %p) {
+; CHECK-LABEL: @callee_volatile(
+; CHECK-NEXT: [[V:%.*]] = load volatile i32, i32* [[P:%.*]], align 4
+; CHECK-NEXT: ret i32 [[V]]
+;
+ %v = load volatile i32, i32* %p
+ ret i32 %v
+}
+
+define void @caller_volatile(i32* %p) {
+; CHECK-LABEL: @caller_volatile(
+; CHECK-NEXT: [[TMP1:%.*]] = call i32 @callee_volatile(i32* [[P:%.*]])
+; CHECK-NEXT: ret void
+;
+ call i32 @callee_volatile(i32* %p)
+ ret void
+}
+
+define internal i32 @callee_atomic(i32* %p) {
+; CHECK-LABEL: @callee_atomic(
+; CHECK-NEXT: [[V:%.*]] = load atomic i32, i32* [[P:%.*]] seq_cst, align 4
+; CHECK-NEXT: ret i32 [[V]]
+;
+ %v = load atomic i32, i32* %p seq_cst, align 4
+ ret i32 %v
+}
+
+define void @caller_atomic(i32* %p) {
+; CHECK-LABEL: @caller_atomic(
+; CHECK-NEXT: [[TMP1:%.*]] = call i32 @callee_atomic(i32* [[P:%.*]])
+; CHECK-NEXT: ret void
+;
+ call i32 @callee_atomic(i32* %p)
+ ret void
+}
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