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authorAlon Zakai <azakai@google.com>2023-04-05 12:53:50 -0700
committerGitHub <noreply@github.com>2023-04-05 19:53:50 +0000
commit04d451f3aadaf4d364e001fa9a849ef57a100a9e (patch)
tree3f82300c68a64df93b455ce19a9969d2d3c5dbe6
parentd21b6d04ff8020d76636ee0e09a8ccede9c0bf39 (diff)
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RemoveUnusedModuleElements: Add SIMD support for memory operations (#5632)
Fixes #5629
-rw-r--r--src/passes/RemoveUnusedModuleElements.cpp6
-rw-r--r--test/lit/passes/remove-unused-module-elements_all-features.wast39
2 files changed, 45 insertions, 0 deletions
diff --git a/src/passes/RemoveUnusedModuleElements.cpp b/src/passes/RemoveUnusedModuleElements.cpp
index 747b8806c..943448cfa 100644
--- a/src/passes/RemoveUnusedModuleElements.cpp
+++ b/src/passes/RemoveUnusedModuleElements.cpp
@@ -154,6 +154,12 @@ struct ReferenceFinder : public PostWalker<ReferenceFinder> {
void visitAtomicNotify(AtomicNotify* curr) {
note({ModuleElementKind::Memory, curr->memory});
}
+ void visitSIMDLoad(SIMDLoad* curr) {
+ note({ModuleElementKind::Memory, curr->memory});
+ }
+ void visitSIMDLoadStoreLane(SIMDLoadStoreLane* curr) {
+ note({ModuleElementKind::Memory, curr->memory});
+ }
void visitMemoryInit(MemoryInit* curr) {
note({ModuleElementKind::DataSegment, curr->segment});
note({ModuleElementKind::Memory, curr->memory});
diff --git a/test/lit/passes/remove-unused-module-elements_all-features.wast b/test/lit/passes/remove-unused-module-elements_all-features.wast
index d5c394e30..c8b4a57df 100644
--- a/test/lit/passes/remove-unused-module-elements_all-features.wast
+++ b/test/lit/passes/remove-unused-module-elements_all-features.wast
@@ -722,3 +722,42 @@
)
)
)
+;; SIMD operations can keep memories alive
+(module
+ ;; CHECK: (type $none_=>_none (func))
+
+ ;; CHECK: (memory $A 1 1)
+ (memory $A 1 1)
+ ;; CHECK: (memory $B 1 1)
+ (memory $B 1 1)
+ (memory $C-unused 1 1)
+
+ (func "func"
+ (drop
+ (v128.load64_splat $A
+ (i32.const 0)
+ )
+ )
+ (drop
+ (v128.load16_lane $B 0
+ (i32.const 0)
+ (v128.const i32x4 0 0 0 0)
+ )
+ )
+ )
+)
+;; CHECK: (export "func" (func $0))
+
+;; CHECK: (func $0 (type $none_=>_none)
+;; CHECK-NEXT: (drop
+;; CHECK-NEXT: (v128.load64_splat $A
+;; CHECK-NEXT: (i32.const 0)
+;; CHECK-NEXT: )
+;; CHECK-NEXT: )
+;; CHECK-NEXT: (drop
+;; CHECK-NEXT: (v128.load16_lane $B 0
+;; CHECK-NEXT: (i32.const 0)
+;; CHECK-NEXT: (v128.const i32x4 0x00000000 0x00000000 0x00000000 0x00000000)
+;; CHECK-NEXT: )
+;; CHECK-NEXT: )
+;; CHECK-NEXT: )