1 ; RUN: llc -mtriple=aarch64-apple-darwin -fast-isel -verify-machineinstrs < %s | FileCheck %s
4 ; Test folding of the sign-/zero-extend into the load instruction.
8 define i32 @load_unscaled_zext_i8_to_i32(i64 %a) {
9 ; CHECK-LABEL: load_unscaled_zext_i8_to_i32
10 ; CHECK: ldurb [[REG:w[0-9]+]], [x0, #-8]
11 ; CHECK: uxtb w0, [[REG]]
13 %2 = inttoptr i64 %1 to ptr addrspace(256)
14 %3 = load i8, ptr addrspace(256) %2
15 %4 = zext i8 %3 to i32
19 define i32 @load_unscaled_zext_i16_to_i32(i64 %a) {
20 ; CHECK-LABEL: load_unscaled_zext_i16_to_i32
21 ; CHECK: ldurh [[REG:w[0-9]+]], [x0, #-8]
22 ; CHECK: uxth w0, [[REG]]
24 %2 = inttoptr i64 %1 to ptr addrspace(256)
25 %3 = load i16, ptr addrspace(256) %2
26 %4 = zext i16 %3 to i32
30 define i64 @load_unscaled_zext_i8_to_i64(i64 %a) {
31 ; CHECK-LABEL: load_unscaled_zext_i8_to_i64
32 ; CHECK: ldurb w[[REG:[0-9]+]], [x0, #-8]
33 ; CHECK: ubfx x0, x[[REG]], #0, #8
35 %2 = inttoptr i64 %1 to ptr addrspace(256)
36 %3 = load i8, ptr addrspace(256) %2
37 %4 = zext i8 %3 to i64
41 define i64 @load_unscaled_zext_i16_to_i64(i64 %a) {
42 ; CHECK-LABEL: load_unscaled_zext_i16_to_i64
43 ; CHECK: ldurh w[[REG:[0-9]+]], [x0, #-8]
44 ; CHECK: ubfx x0, x[[REG]], #0, #16
46 %2 = inttoptr i64 %1 to ptr addrspace(256)
47 %3 = load i16, ptr addrspace(256) %2
48 %4 = zext i16 %3 to i64
52 define i64 @load_unscaled_zext_i32_to_i64(i64 %a) {
53 ; CHECK-LABEL: load_unscaled_zext_i32_to_i64
54 ; CHECK: ldur w[[REG:[0-9]+]], [x0, #-8]
55 ; CHECK: lsr w0, w[[REG]], #0
57 %2 = inttoptr i64 %1 to ptr addrspace(256)
58 %3 = load i32, ptr addrspace(256) %2
59 %4 = zext i32 %3 to i64
63 define i32 @load_unscaled_sext_i8_to_i32(i64 %a) {
64 ; CHECK-LABEL: load_unscaled_sext_i8_to_i32
65 ; CHECK: ldurb [[REG:w[0-9]+]], [x0, #-8]
66 ; CHECK: sxtb w0, [[REG]]
68 %2 = inttoptr i64 %1 to ptr addrspace(256)
69 %3 = load i8, ptr addrspace(256) %2
70 %4 = sext i8 %3 to i32
74 define i32 @load_unscaled_sext_i16_to_i32(i64 %a) {
75 ; CHECK-LABEL: load_unscaled_sext_i16_to_i32
76 ; CHECK: ldurh [[REG:w[0-9]+]], [x0, #-8]
77 ; CHECK: sxth w0, [[REG]]
79 %2 = inttoptr i64 %1 to ptr addrspace(256)
80 %3 = load i16, ptr addrspace(256) %2
81 %4 = sext i16 %3 to i32
85 define i64 @load_unscaled_sext_i8_to_i64(i64 %a) {
86 ; CHECK-LABEL: load_unscaled_sext_i8_to_i64
87 ; CHECK: ldurb [[REG:w[0-9]+]], [x0, #-8]
88 ; CHECK: sxtb x0, [[REG]]
90 %2 = inttoptr i64 %1 to ptr addrspace(256)
91 %3 = load i8, ptr addrspace(256) %2
92 %4 = sext i8 %3 to i64
96 define i64 @load_unscaled_sext_i16_to_i64(i64 %a) {
97 ; CHECK-LABEL: load_unscaled_sext_i16_to_i64
98 ; CHECK: ldurh [[REG:w[0-9]+]], [x0, #-8]
99 ; CHECK: sxth x0, [[REG]]
101 %2 = inttoptr i64 %1 to ptr addrspace(256)
102 %3 = load i16, ptr addrspace(256) %2
103 %4 = sext i16 %3 to i64
107 define i64 @load_unscaled_sext_i32_to_i64(i64 %a) {
108 ; CHECK-LABEL: load_unscaled_sext_i32_to_i64
109 ; CHECK: ldur [[REG:w[0-9]+]], [x0, #-8]
110 ; CHECK: sxtw x0, [[REG]]
112 %2 = inttoptr i64 %1 to ptr addrspace(256)
113 %3 = load i32, ptr addrspace(256) %2
114 %4 = sext i32 %3 to i64