[clang] [Clang] Remove 3-element vector load and store special handling (PR #104661)

Eli Friedman via cfe-commits cfe-commits at lists.llvm.org
Thu Aug 22 16:08:00 PDT 2024


================
@@ -45,7 +45,7 @@ void test3(packedfloat3 *p) {
   *p = (packedfloat3) { 3.2f, 2.3f, 0.1f };
 }
 // CHECK: @test3(
-// CHECK: store <4 x float> {{.*}}, align 4
+// CHECK: store <3 x float> {{.*}}, align 4
----------------
efriedma-quic wrote:

Even if we can prove it doesn't trap, it's still not legal to store to the trailing bytes; they could contain other data.  So we have to split the store.

https://github.com/llvm/llvm-project/pull/104661


More information about the cfe-commits mailing list