================
@@ -1,4 +1,4 @@
-; RUN: llc -filetype=obj %s -o %t.o
+; RUN: llc -filetype=obj -mattr=-bulk-memory %s -o %t.o
----------------
sunfishcode wrote:
I've now investigated custom-section-name.ll more.
With bulk-memory, we get a `__wasm_init_memory` function:
```
(module $custom-section-name.bss.wasm
(type (;0;) (func))
(import "env" "memory" (memory (;0;) 2))
(func $__wasm_call_ctors (;0;) (type 0))
(func $__wasm_init_memory (;1;) (type 0)
i32.const 1036
i32.const 0
i32.const 4
memory.fill
)
(global $__stack_pointer (;0;) (mut i32) i32.const 66576)
(start $__wasm_init_memory)
(data $WowZero! (;0;) (i32.const 1024) "\00\00\00\00")
(data $MyAwesomeSection (;1;) (i32.const 1028) "*\00\00\00")
(data $AnotherGreatSection (;2;) (i32.const 1032) "\07\00\00\00")
(@custom "target_features" (after data)
"\06+\0bbulk-memory+\16call-indirect-overlong+\0amultivalue+\0fmutable-globals+\0freference-types+\08sign-ext")
)
```
Without bulk-memory we get a .bss section:
```
(module $custom-section-name.bss.wasm
(type (;0;) (func))
(import "env" "memory" (memory (;0;) 2))
(func $__wasm_call_ctors (;0;) (type 0))
(global $__stack_pointer (;0;) (mut i32) i32.const 66576)
(data $WowZero! (;0;) (i32.const 1024) "\00\00\00\00")
(data $MyAwesomeSection (;1;) (i32.const 1028) "*\00\00\00")
(data $AnotherGreatSection (;2;) (i32.const 1032) "\07\00\00\00")
(data $.bss (;3;) (i32.const 1036) "\00\00\00\00")
(@custom "target_features" (after data)
"\05+\16call-indirect-overlong+\0amultivalue+\0fmutable-globals+\0freference-types+\08sign-ext")
)
```
The test is intended to test the use of the .bss section, and we only get a
.bss section in this test if we disable bulk-memory.
https://github.com/llvm/llvm-project/pull/112049
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