111 lines · plain
1; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py2; RUN: llc -mtriple=aarch64-unknown-linux-gnu < %s | FileCheck %s --check-prefixes=CHECK,CHECK-SD3; RUN: llc -mtriple=aarch64-unknown-linux-gnu -global-isel < %s | FileCheck %s --check-prefixes=CHECK,CHECK-GI4 5define i32 @fold_urem_positive_odd(i32 %x) {6; CHECK-LABEL: fold_urem_positive_odd:7; CHECK: // %bb.0:8; CHECK-NEXT: mov w8, #8969 // =0x23099; CHECK-NEXT: movk w8, #22765, lsl #1610; CHECK-NEXT: umull x8, w0, w811; CHECK-NEXT: lsr x8, x8, #3212; CHECK-NEXT: sub w9, w0, w813; CHECK-NEXT: add w8, w8, w9, lsr #114; CHECK-NEXT: mov w9, #95 // =0x5f15; CHECK-NEXT: lsr w8, w8, #616; CHECK-NEXT: msub w0, w8, w9, w017; CHECK-NEXT: ret18 %1 = urem i32 %x, 9519 ret i32 %120}21 22define i32 @fold_urem_positive_even(i32 %x) {23; CHECK-LABEL: fold_urem_positive_even:24; CHECK: // %bb.0:25; CHECK-NEXT: mov w8, #16323 // =0x3fc326; CHECK-NEXT: mov w9, #1060 // =0x42427; CHECK-NEXT: movk w8, #63310, lsl #1628; CHECK-NEXT: umull x8, w0, w829; CHECK-NEXT: lsr x8, x8, #4230; CHECK-NEXT: msub w0, w8, w9, w031; CHECK-NEXT: ret32 %1 = urem i32 %x, 106033 ret i32 %134}35 36; Don't fold if we can combine urem with udiv.37define i32 @combine_urem_udiv(i32 %x) {38; CHECK-SD-LABEL: combine_urem_udiv:39; CHECK-SD: // %bb.0:40; CHECK-SD-NEXT: mov w8, #8969 // =0x230941; CHECK-SD-NEXT: movk w8, #22765, lsl #1642; CHECK-SD-NEXT: umull x8, w0, w843; CHECK-SD-NEXT: lsr x8, x8, #3244; CHECK-SD-NEXT: sub w9, w0, w845; CHECK-SD-NEXT: add w8, w8, w9, lsr #146; CHECK-SD-NEXT: mov w9, #95 // =0x5f47; CHECK-SD-NEXT: lsr w8, w8, #648; CHECK-SD-NEXT: msub w9, w8, w9, w049; CHECK-SD-NEXT: add w0, w9, w850; CHECK-SD-NEXT: ret51;52; CHECK-GI-LABEL: combine_urem_udiv:53; CHECK-GI: // %bb.0:54; CHECK-GI-NEXT: mov w8, #95 // =0x5f55; CHECK-GI-NEXT: udiv w9, w0, w856; CHECK-GI-NEXT: msub w8, w9, w8, w057; CHECK-GI-NEXT: add w0, w8, w958; CHECK-GI-NEXT: ret59 %1 = urem i32 %x, 9560 %2 = udiv i32 %x, 9561 %3 = add i32 %1, %262 ret i32 %363}64 65; Don't fold for divisors that are a power of two.66define i32 @dont_fold_urem_power_of_two(i32 %x) {67; CHECK-LABEL: dont_fold_urem_power_of_two:68; CHECK: // %bb.0:69; CHECK-NEXT: and w0, w0, #0x3f70; CHECK-NEXT: ret71 %1 = urem i32 %x, 6472 ret i32 %173}74 75; Don't fold if the divisor is one.76define i32 @dont_fold_urem_one(i32 %x) {77; CHECK-LABEL: dont_fold_urem_one:78; CHECK: // %bb.0:79; CHECK-NEXT: mov w0, wzr80; CHECK-NEXT: ret81 %1 = urem i32 %x, 182 ret i32 %183}84 85; Don't fold if the divisor is 2^32.86define i32 @dont_fold_urem_i32_umax(i32 %x) {87; CHECK-LABEL: dont_fold_urem_i32_umax:88; CHECK: // %bb.0:89; CHECK-NEXT: ret90 %1 = urem i32 %x, 429496729691 ret i32 %192}93 94; Don't fold i64 urem95define i64 @dont_fold_urem_i64(i64 %x) {96; CHECK-LABEL: dont_fold_urem_i64:97; CHECK: // %bb.0:98; CHECK-NEXT: mov x9, #58849 // =0xe5e199; CHECK-NEXT: lsr x8, x0, #1100; CHECK-NEXT: movk x9, #48148, lsl #16101; CHECK-NEXT: movk x9, #33436, lsl #32102; CHECK-NEXT: movk x9, #21399, lsl #48103; CHECK-NEXT: umulh x8, x8, x9104; CHECK-NEXT: mov w9, #98 // =0x62105; CHECK-NEXT: lsr x8, x8, #4106; CHECK-NEXT: msub x0, x8, x9, x0107; CHECK-NEXT: ret108 %1 = urem i64 %x, 98109 ret i64 %1110}111