[llvm] 178270b - [GVN] Add additional captured before tests (NFC)

[Nikita Popov via llvm-commits]

Author: Nikita Popov
Date: 2023-10-23T16:45:14+02:00
New Revision: 178270b7bebe863d8a55fb18cba7aa304ab919e1

URL: https://github.com/llvm/llvm-project/commit/178270b7bebe863d8a55fb18cba7aa304ab919e1
DIFF: https://github.com/llvm/llvm-project/commit/178270b7bebe863d8a55fb18cba7aa304ab919e1.diff

LOG: [GVN] Add additional captured before tests (NFC)

Added: 
    

Modified: 
    llvm/test/Transforms/GVN/captured-before.ll

Removed: 
    


################################################################################
diff  --git a/llvm/test/Transforms/GVN/captured-before.ll b/llvm/test/Transforms/GVN/captured-before.ll
index 6d012edea34610f..6bf95de9ee0b5f4 100644
--- a/llvm/test/Transforms/GVN/captured-before.ll
+++ b/llvm/test/Transforms/GVN/captured-before.ll
@@ -77,3 +77,59 @@ define i32 @test_store_after_capture(ptr %p) {
   %v = load i32, ptr %a
   ret i32 %v
 }
+
+define i32 @test_capture_readonly() {
+; CHECK-LABEL: define i32 @test_capture_readonly() {
+; CHECK-NEXT:    [[A:%.*]] = alloca i32, align 4
+; CHECK-NEXT:    store i32 123, ptr [[A]], align 4
+; CHECK-NEXT:    call void @capture(ptr readonly [[A]])
+; CHECK-NEXT:    [[V:%.*]] = load i32, ptr [[A]], align 4
+; CHECK-NEXT:    ret i32 [[V]]
+;
+  %a = alloca i32
+  store i32 123, ptr %a
+  call void @capture(ptr readonly %a)
+  %v = load i32, ptr %a
+  ret i32 %v
+}
+
+define i32 @test_capture_readonly_with_following_call() {
+; CHECK-LABEL: define i32 @test_capture_readonly_with_following_call() {
+; CHECK-NEXT:    [[A:%.*]] = alloca i32, align 4
+; CHECK-NEXT:    store i32 123, ptr [[A]], align 4
+; CHECK-NEXT:    call void @capture(ptr readonly [[A]])
+; CHECK-NEXT:    call void @some_call()
+; CHECK-NEXT:    [[V:%.*]] = load i32, ptr [[A]], align 4
+; CHECK-NEXT:    ret i32 [[V]]
+;
+  %a = alloca i32
+  store i32 123, ptr %a
+  call void @capture(ptr readonly %a)
+  call void @some_call()
+  %v = load i32, ptr %a
+  ret i32 %v
+}
+
+declare void @use(i32)
+
+define i32 @test_capture_readonly_in_loop() {
+; CHECK-LABEL: define i32 @test_capture_readonly_in_loop() {
+; CHECK-NEXT:    [[A:%.*]] = alloca i32, align 4
+; CHECK-NEXT:    store i32 123, ptr [[A]], align 4
+; CHECK-NEXT:    br label [[LOOP:%.*]]
+; CHECK:       loop:
+; CHECK-NEXT:    call void @capture(ptr readonly [[A]])
+; CHECK-NEXT:    [[V:%.*]] = load i32, ptr [[A]], align 4
+; CHECK-NEXT:    call void @use(i32 [[V]]) #[[ATTR0:[0-9]+]]
+; CHECK-NEXT:    br label [[LOOP]]
+;
+  %a = alloca i32
+  store i32 123, ptr %a
+  br label %loop
+
+loop:
+  call void @capture(ptr readonly %a)
+  %v = load i32, ptr %a
+  call void @use(i32 %v) memory(none)
+  br label %loop
+}