[AArch64] Precommit tests for PR71917

Author: vfdff

llvm/test/CodeGen/AArch64/arm64-addrmode.ll

@@ -209,3 +209,90 @@ define void @t17(i64 %a) {
   %3 = load volatile i64, ptr %2, align 8
   ret void
 }
+
+define i32 @LdOffset_i8(ptr %a)  {
+; CHECK-LABEL: LdOffset_i8:
+; CHECK:       // %bb.0:
+; CHECK-NEXT:    mov w8, #56952 // =0xde78
+; CHECK-NEXT:    movk w8, #15, lsl #16
+; CHECK-NEXT:    ldrb w0, [x0, x8]
+; CHECK-NEXT:    ret
+  %arrayidx = getelementptr inbounds i8, ptr %a, i64 1039992
+  %val = load i8, ptr %arrayidx, align 1
+  %conv = zext i8 %val to i32
+  ret i32 %conv
+}
+
+define i32 @LdOffset_i16(ptr %a)  {
+; CHECK-LABEL: LdOffset_i16:
+; CHECK:       // %bb.0:
+; CHECK-NEXT:    mov w8, #48368 // =0xbcf0
+; CHECK-NEXT:    movk w8, #31, lsl #16
+; CHECK-NEXT:    ldrsh w0, [x0, x8]
+; CHECK-NEXT:    ret
+  %arrayidx = getelementptr inbounds i16, ptr %a, i64 1039992
+  %val = load i16, ptr %arrayidx, align 2
+  %conv = sext i16 %val to i32
+  ret i32 %conv
+}
+
+define i32 @LdOffset_i32(ptr %a)  {
+; CHECK-LABEL: LdOffset_i32:
+; CHECK:       // %bb.0:
+; CHECK-NEXT:    mov w8, #31200 // =0x79e0
+; CHECK-NEXT:    movk w8, #63, lsl #16
+; CHECK-NEXT:    ldr w0, [x0, x8]
+; CHECK-NEXT:    ret
+  %arrayidx = getelementptr inbounds i32, ptr %a, i64 1039992
+  %val = load i32, ptr %arrayidx, align 4
+  ret i32 %val
+}
+
+define i64 @LdOffset_i64_multi_offset(ptr %a) {
+; CHECK-LABEL: LdOffset_i64_multi_offset:
+; CHECK:       // %bb.0:
+; CHECK-NEXT:    add x8, x0, #2031, lsl #12 // =8318976
+; CHECK-NEXT:    add x8, x8, #960
+; CHECK-NEXT:    ldr x9, [x8]
+; CHECK-NEXT:    ldr x8, [x8, #2056]
+; CHECK-NEXT:    add x0, x8, x9
+; CHECK-NEXT:    ret
+  %arrayidx = getelementptr inbounds i64, ptr %a, i64 1039992
+  %val0 = load i64, ptr %arrayidx, align 8
+  %arrayidx1 = getelementptr inbounds i64, ptr %a, i64 1040249
+  %val1 = load i64, ptr %arrayidx1, align 8
+  %add = add nsw i64 %val1, %val0
+  ret i64 %add
+}
+
+define i64 @LdOffset_i64_multi_offset_with_commmon_base(ptr %a) {
+; CHECK-LABEL: LdOffset_i64_multi_offset_with_commmon_base:
+; CHECK:       // %bb.0:
+; CHECK-NEXT:    add x8, x0, #507, lsl #12 // =2076672
+; CHECK-NEXT:    ldr x9, [x8, #26464]
+; CHECK-NEXT:    ldr x8, [x8, #26496]
+; CHECK-NEXT:    add x0, x8, x9
+; CHECK-NEXT:    ret
+  %b = getelementptr inbounds i16, ptr %a, i64 1038336
+  %arrayidx = getelementptr inbounds i64, ptr %b, i64 3308
+  %val0 = load i64, ptr %arrayidx, align 8
+  %arrayidx1 = getelementptr inbounds i64, ptr %b, i64 3312
+  %val1 = load i64, ptr %arrayidx1, align 8
+  %add = add nsw i64 %val1, %val0
+  ret i64 %add
+}
+
+; Negative test: the offset is odd
+define i32 @LdOffset_i16_odd_offset(ptr nocapture noundef readonly %a)  {
+; CHECK-LABEL: LdOffset_i16_odd_offset:
+; CHECK:       // %bb.0:
+; CHECK-NEXT:    mov w8, #56953 // =0xde79
+; CHECK-NEXT:    movk w8, #15, lsl #16
+; CHECK-NEXT:    ldrsh w0, [x0, x8]
+; CHECK-NEXT:    ret
+  %arrayidx = getelementptr inbounds i8, ptr %a, i64 1039993
+  %val = load i16, ptr %arrayidx, align 2
+  %conv = sext i16 %val to i32
+  ret i32 %conv
+}
+