[AArch64][SME2] Remove IsPreservesZA from ldr_zt builtin (llvm#74303)

Author: MDevereau

clang/include/clang/Basic/arm_sme.td

@@ -319,7 +319,7 @@ let TargetGuard = "sme2" in {
 // Spill and fill of ZT0
 //
 let TargetGuard = "sme2" in {
-  def SVLDR_ZT : Inst<"svldr_zt", "viQ", "", MergeNone, "aarch64_sme_ldr_zt", [IsOverloadNone, IsStreamingCompatible, IsSharedZA, IsPreservesZA], [ImmCheck<0, ImmCheck0_0>]>;
+  def SVLDR_ZT : Inst<"svldr_zt", "viQ", "", MergeNone, "aarch64_sme_ldr_zt", [IsOverloadNone, IsStreamingCompatible, IsSharedZA], [ImmCheck<0, ImmCheck0_0>]>;
   def SVSTR_ZT : Inst<"svstr_zt", "vi%", "", MergeNone, "aarch64_sme_str_zt", [IsOverloadNone, IsStreamingCompatible, IsSharedZA, IsPreservesZA], [ImmCheck<0, ImmCheck0_0>]>;
 
 //

clang/test/CodeGen/aarch64-sme2-intrinsics/acle_sme2_ldr_str_zt.c

@@ -20,7 +20,7 @@
 // CPP-CHECK-NEXT:    tail call void @llvm.aarch64.sme.ldr.zt(i32 0, ptr [[BASE:%.*]])
 // CPP-CHECK-NEXT:    ret void
 //
-void test_svldr_zt(const void *base) __arm_streaming_compatible __arm_shared_za __arm_preserves_za {
+void test_svldr_zt(const void *base) __arm_streaming_compatible __arm_shared_za {
   svldr_zt(0, base);
 }
 

clang/test/Sema/aarch64-sme2-intrinsics/acle_sme2_imm.cpp

@@ -20,7 +20,11 @@ void test_outer_product(svbool_t pred, svint16_t s16, svuint16_t u16, svint32_t
   svbmops_za32_s32_m(4, pred, pred, s32, s32); // expected-error {{argument value 4 is outside the valid range [0, 3]}}
 }
 
-void test_ldr_str_zt(const void *const_base, void *base) __arm_streaming_compatible __arm_shared_za __arm_preserves_za {
+void test_ldr_zt(const void *const_base) __arm_streaming_compatible __arm_shared_za {
   svldr_zt(1, const_base); // expected-error {{argument value 1 is outside the valid range [0, 0]}}
+}
+
+void test_str_zt(void *base) __arm_streaming_compatible __arm_shared_za __arm_preserves_za {
   svstr_zt(1, base);       // expected-error {{argument value 1 is outside the valid range [0, 0]}}
 }
+