derek.holloway
7502bf64a4
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108 lines
3.1 KiB
LLVM
108 lines
3.1 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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define i32 @fold_srem_positive_odd(i32 %x) {
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; CHECK-LABEL: fold_srem_positive_odd:
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; CHECK: // %bb.0:
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; CHECK-NEXT: mov w8, #37253 // =0x9185
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; CHECK-NEXT: // kill: def $w0 killed $w0 def $x0
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; CHECK-NEXT: movk w8, #44150, lsl #16
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; CHECK-NEXT: smull x8, w0, w8
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; CHECK-NEXT: add x8, x0, x8, lsr #32
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; CHECK-NEXT: asr w9, w8, #6
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; CHECK-NEXT: add w8, w9, w8, lsr #31
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; CHECK-NEXT: mov w9, #95 // =0x5f
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; CHECK-NEXT: msub w0, w8, w9, w0
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; CHECK-NEXT: ret
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%1 = srem i32 %x, 95
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ret i32 %1
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}
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define i32 @fold_srem_positive_even(i32 %x) {
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; CHECK-LABEL: fold_srem_positive_even:
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; CHECK: // %bb.0:
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; CHECK-NEXT: mov w8, #36849 // =0x8ff1
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; CHECK-NEXT: movk w8, #15827, lsl #16
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; CHECK-NEXT: smull x8, w0, w8
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; CHECK-NEXT: asr x9, x8, #40
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; CHECK-NEXT: add x8, x9, x8, lsr #63
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; CHECK-NEXT: mov w9, #1060 // =0x424
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; CHECK-NEXT: msub w0, w8, w9, w0
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; CHECK-NEXT: ret
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%1 = srem i32 %x, 1060
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ret i32 %1
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}
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define i32 @fold_srem_negative_odd(i32 %x) {
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; CHECK-LABEL: fold_srem_negative_odd:
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; CHECK: // %bb.0:
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; CHECK-NEXT: mov w8, #65445 // =0xffa5
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; CHECK-NEXT: movk w8, #42330, lsl #16
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; CHECK-NEXT: smull x8, w0, w8
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; CHECK-NEXT: asr x9, x8, #40
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; CHECK-NEXT: add x8, x9, x8, lsr #63
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; CHECK-NEXT: mov w9, #-723 // =0xfffffd2d
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; CHECK-NEXT: msub w0, w8, w9, w0
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; CHECK-NEXT: ret
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%1 = srem i32 %x, -723
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ret i32 %1
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}
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define i32 @fold_srem_negative_even(i32 %x) {
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; CHECK-LABEL: fold_srem_negative_even:
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; CHECK: // %bb.0:
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; CHECK-NEXT: mov w8, #62439 // =0xf3e7
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; CHECK-NEXT: movk w8, #64805, lsl #16
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; CHECK-NEXT: smull x8, w0, w8
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; CHECK-NEXT: asr x9, x8, #40
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; CHECK-NEXT: add x8, x9, x8, lsr #63
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; CHECK-NEXT: mov w9, #-22981 // =0xffffa63b
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; CHECK-NEXT: msub w0, w8, w9, w0
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; CHECK-NEXT: ret
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%1 = srem i32 %x, -22981
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ret i32 %1
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}
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; Don't fold if we can combine srem with sdiv.
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define i32 @combine_srem_sdiv(i32 %x) {
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; CHECK-LABEL: combine_srem_sdiv:
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; CHECK: // %bb.0:
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; CHECK-NEXT: mov w8, #37253 // =0x9185
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; CHECK-NEXT: // kill: def $w0 killed $w0 def $x0
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; CHECK-NEXT: movk w8, #44150, lsl #16
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; CHECK-NEXT: smull x8, w0, w8
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; CHECK-NEXT: add x8, x0, x8, lsr #32
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; CHECK-NEXT: asr w9, w8, #6
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; CHECK-NEXT: add w8, w9, w8, lsr #31
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; CHECK-NEXT: mov w9, #95 // =0x5f
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; CHECK-NEXT: msub w9, w8, w9, w0
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; CHECK-NEXT: add w0, w9, w8
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; CHECK-NEXT: ret
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%1 = srem i32 %x, 95
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%2 = sdiv i32 %x, 95
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%3 = add i32 %1, %2
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ret i32 %3
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}
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; Don't fold i64 srem
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define i64 @dont_fold_srem_i64(i64 %x) {
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; CHECK-LABEL: dont_fold_srem_i64:
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; CHECK: // %bb.0:
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; CHECK-NEXT: mov x8, #58849 // =0xe5e1
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; CHECK-NEXT: movk x8, #48148, lsl #16
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; CHECK-NEXT: movk x8, #33436, lsl #32
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; CHECK-NEXT: movk x8, #21399, lsl #48
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; CHECK-NEXT: smulh x8, x0, x8
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; CHECK-NEXT: asr x9, x8, #5
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; CHECK-NEXT: add x8, x9, x8, lsr #63
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; CHECK-NEXT: mov w9, #98 // =0x62
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; CHECK-NEXT: msub x0, x8, x9, x0
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; CHECK-NEXT: ret
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%1 = srem i64 %x, 98
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ret i64 %1
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}
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