1 files changed, 46 insertions, 0 deletions
diff --git a/test/CodeGen/WebAssembly/store-trunc.ll b/test/CodeGen/WebAssembly/store-trunc.ll
new file mode 100644
index 000000000000..c12b716dfd59
--- /dev/null
+++ b/test/CodeGen/WebAssembly/store-trunc.ll
@@ -0,0 +1,46 @@
+; RUN: llc < %s -asm-verbose=false | FileCheck %s
+
+; Test that truncating stores are assembled properly.
+
+target datalayout = "e-p:32:32-i64:64-n32:64-S128"
+target triple = "wasm32-unknown-unknown"
+
+; CHECK-LABEL: trunc_i8_i32:
+; CHECK: i32.store8 $discard=, 0($0), $1{{$}}
+define void @trunc_i8_i32(i8 *%p, i32 %v) {
+  %t = trunc i32 %v to i8
+  store i8 %t, i8* %p
+  ret void
+}
+
+; CHECK-LABEL: trunc_i16_i32:
+; CHECK: i32.store16 $discard=, 0($0), $1{{$}}
+define void @trunc_i16_i32(i16 *%p, i32 %v) {
+  %t = trunc i32 %v to i16
+  store i16 %t, i16* %p
+  ret void
+}
+
+; CHECK-LABEL: trunc_i8_i64:
+; CHECK: i64.store8 $discard=, 0($0), $1{{$}}
+define void @trunc_i8_i64(i8 *%p, i64 %v) {
+  %t = trunc i64 %v to i8
+  store i8 %t, i8* %p
+  ret void
+}
+
+; CHECK-LABEL: trunc_i16_i64:
+; CHECK: i64.store16 $discard=, 0($0), $1{{$}}
+define void @trunc_i16_i64(i16 *%p, i64 %v) {
+  %t = trunc i64 %v to i16
+  store i16 %t, i16* %p
+  ret void
+}
+
+; CHECK-LABEL: trunc_i32_i64:
+; CHECK: i64.store32 $discard=, 0($0), $1{{$}}
+define void @trunc_i32_i64(i32 *%p, i64 %v) {
+  %t = trunc i64 %v to i32
+  store i32 %t, i32* %p
+  ret void
+}