forked from OSchip/llvm-project
255 lines
7.4 KiB
LLVM
255 lines
7.4 KiB
LLVM
; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py
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; RUN: llc -mtriple=aarch64-unknown-linux-gnu < %s | FileCheck %s
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;------------------------------------------------------------------------------;
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; Odd divisors
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;------------------------------------------------------------------------------;
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define i32 @test_urem_odd(i32 %X) nounwind {
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; CHECK-LABEL: test_urem_odd:
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; CHECK: // %bb.0:
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; CHECK-NEXT: mov w8, #52429
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; CHECK-NEXT: movk w8, #52428, lsl #16
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; CHECK-NEXT: mov w9, #13108
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; CHECK-NEXT: mul w8, w0, w8
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; CHECK-NEXT: movk w9, #13107, lsl #16
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; CHECK-NEXT: cmp w8, w9
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; CHECK-NEXT: cset w0, lo
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; CHECK-NEXT: ret
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%urem = urem i32 %X, 5
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%cmp = icmp eq i32 %urem, 0
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%ret = zext i1 %cmp to i32
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ret i32 %ret
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}
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define i32 @test_urem_odd_25(i32 %X) nounwind {
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; CHECK-LABEL: test_urem_odd_25:
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; CHECK: // %bb.0:
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; CHECK-NEXT: mov w8, #23593
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; CHECK-NEXT: movk w8, #49807, lsl #16
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; CHECK-NEXT: mov w9, #28836
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; CHECK-NEXT: mul w8, w0, w8
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; CHECK-NEXT: movk w9, #2621, lsl #16
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; CHECK-NEXT: cmp w8, w9
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; CHECK-NEXT: cset w0, lo
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; CHECK-NEXT: ret
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%urem = urem i32 %X, 25
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%cmp = icmp eq i32 %urem, 0
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%ret = zext i1 %cmp to i32
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ret i32 %ret
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}
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; This is like test_urem_odd, except the divisor has bit 30 set.
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define i32 @test_urem_odd_bit30(i32 %X) nounwind {
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; CHECK-LABEL: test_urem_odd_bit30:
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; CHECK: // %bb.0:
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; CHECK-NEXT: mov w8, #43691
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; CHECK-NEXT: movk w8, #27306, lsl #16
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; CHECK-NEXT: mul w8, w0, w8
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; CHECK-NEXT: cmp w8, #4 // =4
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; CHECK-NEXT: cset w0, lo
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; CHECK-NEXT: ret
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%urem = urem i32 %X, 1073741827
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%cmp = icmp eq i32 %urem, 0
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%ret = zext i1 %cmp to i32
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ret i32 %ret
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}
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; This is like test_urem_odd, except the divisor has bit 31 set.
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define i32 @test_urem_odd_bit31(i32 %X) nounwind {
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; CHECK-LABEL: test_urem_odd_bit31:
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; CHECK: // %bb.0:
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; CHECK-NEXT: mov w8, #43691
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; CHECK-NEXT: movk w8, #10922, lsl #16
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; CHECK-NEXT: mul w8, w0, w8
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; CHECK-NEXT: cmp w8, #2 // =2
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; CHECK-NEXT: cset w0, lo
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; CHECK-NEXT: ret
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%urem = urem i32 %X, 2147483651
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%cmp = icmp eq i32 %urem, 0
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%ret = zext i1 %cmp to i32
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ret i32 %ret
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}
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;------------------------------------------------------------------------------;
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; Even divisors
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;------------------------------------------------------------------------------;
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define i16 @test_urem_even(i16 %X) nounwind {
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; CHECK-LABEL: test_urem_even:
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; CHECK: // %bb.0:
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; CHECK-NEXT: mov w9, #28087
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; CHECK-NEXT: and w8, w0, #0xffff
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; CHECK-NEXT: movk w9, #46811, lsl #16
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; CHECK-NEXT: mul w8, w8, w9
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; CHECK-NEXT: mov w9, #9362
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; CHECK-NEXT: ror w8, w8, #1
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; CHECK-NEXT: movk w9, #4681, lsl #16
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; CHECK-NEXT: cmp w8, w9
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; CHECK-NEXT: cset w0, hi
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; CHECK-NEXT: ret
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%urem = urem i16 %X, 14
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%cmp = icmp ne i16 %urem, 0
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%ret = zext i1 %cmp to i16
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ret i16 %ret
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}
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define i32 @test_urem_even_100(i32 %X) nounwind {
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; CHECK-LABEL: test_urem_even_100:
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; CHECK: // %bb.0:
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; CHECK-NEXT: mov w8, #23593
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; CHECK-NEXT: movk w8, #49807, lsl #16
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; CHECK-NEXT: mul w8, w0, w8
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; CHECK-NEXT: mov w9, #23593
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; CHECK-NEXT: ror w8, w8, #2
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; CHECK-NEXT: movk w9, #655, lsl #16
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; CHECK-NEXT: cmp w8, w9
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; CHECK-NEXT: cset w0, lo
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; CHECK-NEXT: ret
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%urem = urem i32 %X, 100
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%cmp = icmp eq i32 %urem, 0
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%ret = zext i1 %cmp to i32
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ret i32 %ret
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}
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; This is like test_urem_even, except the divisor has bit 30 set.
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define i32 @test_urem_even_bit30(i32 %X) nounwind {
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; CHECK-LABEL: test_urem_even_bit30:
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; CHECK: // %bb.0:
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; CHECK-NEXT: mov w8, #20165
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; CHECK-NEXT: movk w8, #64748, lsl #16
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; CHECK-NEXT: mul w8, w0, w8
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; CHECK-NEXT: ror w8, w8, #3
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; CHECK-NEXT: cmp w8, #4 // =4
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; CHECK-NEXT: cset w0, lo
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; CHECK-NEXT: ret
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%urem = urem i32 %X, 1073741928
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%cmp = icmp eq i32 %urem, 0
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%ret = zext i1 %cmp to i32
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ret i32 %ret
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}
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; This is like test_urem_odd, except the divisor has bit 31 set.
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define i32 @test_urem_even_bit31(i32 %X) nounwind {
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; CHECK-LABEL: test_urem_even_bit31:
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; CHECK: // %bb.0:
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; CHECK-NEXT: mov w8, #64251
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; CHECK-NEXT: movk w8, #47866, lsl #16
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; CHECK-NEXT: mul w8, w0, w8
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; CHECK-NEXT: ror w8, w8, #1
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; CHECK-NEXT: cmp w8, #2 // =2
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; CHECK-NEXT: cset w0, lo
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; CHECK-NEXT: ret
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%urem = urem i32 %X, 2147483750
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%cmp = icmp eq i32 %urem, 0
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%ret = zext i1 %cmp to i32
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ret i32 %ret
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}
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;------------------------------------------------------------------------------;
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; Special case
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;------------------------------------------------------------------------------;
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; 'NE' predicate is fine too.
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define i32 @test_urem_odd_setne(i32 %X) nounwind {
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; CHECK-LABEL: test_urem_odd_setne:
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; CHECK: // %bb.0:
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; CHECK-NEXT: mov w8, #52429
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; CHECK-NEXT: movk w8, #52428, lsl #16
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; CHECK-NEXT: mul w8, w0, w8
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; CHECK-NEXT: mov w9, #858993459
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; CHECK-NEXT: cmp w8, w9
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; CHECK-NEXT: cset w0, hi
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; CHECK-NEXT: ret
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%urem = urem i32 %X, 5
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%cmp = icmp ne i32 %urem, 0
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%ret = zext i1 %cmp to i32
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ret i32 %ret
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}
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; The fold is only valid for positive divisors, negative-ones should be negated.
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define i32 @test_urem_negative_odd(i32 %X) nounwind {
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; CHECK-LABEL: test_urem_negative_odd:
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; CHECK: // %bb.0:
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; CHECK-NEXT: mov w8, #858993459
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; CHECK-NEXT: mul w8, w0, w8
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; CHECK-NEXT: cmp w8, #1 // =1
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; CHECK-NEXT: cset w0, hi
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; CHECK-NEXT: ret
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%urem = urem i32 %X, -5
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%cmp = icmp ne i32 %urem, 0
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%ret = zext i1 %cmp to i32
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ret i32 %ret
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}
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define i32 @test_urem_negative_even(i32 %X) nounwind {
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; CHECK-LABEL: test_urem_negative_even:
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; CHECK: // %bb.0:
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; CHECK-NEXT: mov w8, #37449
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; CHECK-NEXT: movk w8, #51492, lsl #16
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; CHECK-NEXT: mul w8, w0, w8
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; CHECK-NEXT: ror w8, w8, #1
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; CHECK-NEXT: cmp w8, #1 // =1
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; CHECK-NEXT: cset w0, hi
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; CHECK-NEXT: ret
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%urem = urem i32 %X, -14
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%cmp = icmp ne i32 %urem, 0
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%ret = zext i1 %cmp to i32
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ret i32 %ret
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}
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;------------------------------------------------------------------------------;
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; Negative tests
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;------------------------------------------------------------------------------;
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; We can lower remainder of division by one much better elsewhere.
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define i32 @test_urem_one(i32 %X) nounwind {
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; CHECK-LABEL: test_urem_one:
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; CHECK: // %bb.0:
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; CHECK-NEXT: mov w0, #1
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; CHECK-NEXT: ret
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%urem = urem i32 %X, 1
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%cmp = icmp eq i32 %urem, 0
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%ret = zext i1 %cmp to i32
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ret i32 %ret
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}
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; We can lower remainder of division by powers of two much better elsewhere.
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define i32 @test_urem_pow2(i32 %X) nounwind {
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; CHECK-LABEL: test_urem_pow2:
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; CHECK: // %bb.0:
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; CHECK-NEXT: tst w0, #0xf
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; CHECK-NEXT: cset w0, eq
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; CHECK-NEXT: ret
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%urem = urem i32 %X, 16
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%cmp = icmp eq i32 %urem, 0
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%ret = zext i1 %cmp to i32
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ret i32 %ret
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}
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; The fold is only valid for positive divisors, and we can't negate INT_MIN.
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define i32 @test_urem_int_min(i32 %X) nounwind {
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; CHECK-LABEL: test_urem_int_min:
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; CHECK: // %bb.0:
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; CHECK-NEXT: tst w0, #0x7fffffff
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; CHECK-NEXT: cset w0, eq
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; CHECK-NEXT: ret
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%urem = urem i32 %X, 2147483648
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%cmp = icmp eq i32 %urem, 0
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%ret = zext i1 %cmp to i32
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ret i32 %ret
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}
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; We can lower remainder of division by all-ones much better elsewhere.
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define i32 @test_urem_allones(i32 %X) nounwind {
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; CHECK-LABEL: test_urem_allones:
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; CHECK: // %bb.0:
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; CHECK-NEXT: neg w8, w0
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; CHECK-NEXT: cmp w8, #2 // =2
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; CHECK-NEXT: cset w0, lo
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; CHECK-NEXT: ret
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%urem = urem i32 %X, 4294967295
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%cmp = icmp eq i32 %urem, 0
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%ret = zext i1 %cmp to i32
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ret i32 %ret
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}
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