[llvm] 5b524da - [InstCombine] Add test for unused atomic load from non-constant global (NFC)

[Nikita Popov via llvm-commits]

Author: Nikita Popov
Date: 2022-04-29T15:08:37+02:00
New Revision: 5b524da42f6817920eb1f1dd30f8a2dc3241d614

URL: https://github.com/llvm/llvm-project/commit/5b524da42f6817920eb1f1dd30f8a2dc3241d614
DIFF: https://github.com/llvm/llvm-project/commit/5b524da42f6817920eb1f1dd30f8a2dc3241d614.diff

LOG: [InstCombine] Add test for unused atomic load from non-constant global (NFC)

Added: 
    

Modified: 
    llvm/test/Transforms/InstCombine/atomic.ll

Removed: 
    


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diff  --git a/llvm/test/Transforms/InstCombine/atomic.ll b/llvm/test/Transforms/InstCombine/atomic.ll
index ef838e735312..ec79891af11e 100644
--- a/llvm/test/Transforms/InstCombine/atomic.ll
+++ b/llvm/test/Transforms/InstCombine/atomic.ll
@@ -422,6 +422,7 @@ define void @no_atomic_vector_store(<2 x float> %p, i8* %p2) {
 }
 
 @c = constant i32 42
+ at g = global i32 42
 
 define i32 @atomic_load_from_constant_global() {
 ; CHECK-LABEL: @atomic_load_from_constant_global(
@@ -441,6 +442,15 @@ define i8 @atomic_load_from_constant_global_bitcast() {
   ret i8 %v
 }
 
+define void @atomic_load_from_non_constant_global() {
+; CHECK-LABEL: @atomic_load_from_non_constant_global(
+; CHECK-NEXT:    [[TMP1:%.*]] = load atomic i32, i32* @g seq_cst, align 4
+; CHECK-NEXT:    ret void
+;
+  load atomic i32, i32* @g seq_cst, align 4
+  ret void
+}
+
 define void @volatile_load_from_constant_global() {
 ; CHECK-LABEL: @volatile_load_from_constant_global(
 ; CHECK-NEXT:    [[TMP1:%.*]] = load volatile i32, i32* @c, align 4