derek.holloway
7502bf64a4
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267 lines
8.2 KiB
LLVM
267 lines
8.2 KiB
LLVM
; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py UTC_ARGS: --version 5
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; RUN: llc -mattr=+wide-arithmetic < %s | FileCheck %s
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target triple = "wasm32-unknown-unknown"
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define i128 @add_i128(i128 %a, i128 %b) {
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; CHECK-LABEL: add_i128:
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; CHECK: .functype add_i128 (i32, i64, i64, i64, i64) -> ()
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; CHECK-NEXT: # %bb.0:
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; CHECK-NEXT: local.get 1
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; CHECK-NEXT: local.get 2
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; CHECK-NEXT: local.get 3
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; CHECK-NEXT: local.get 4
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; CHECK-NEXT: i64.add128
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; CHECK-NEXT: local.set 3
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; CHECK-NEXT: local.set 4
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; CHECK-NEXT: local.get 0
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; CHECK-NEXT: local.get 3
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; CHECK-NEXT: i64.store 8
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; CHECK-NEXT: local.get 0
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; CHECK-NEXT: local.get 4
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; CHECK-NEXT: i64.store 0
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; CHECK-NEXT: # fallthrough-return
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%c = add i128 %a, %b
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ret i128 %c
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}
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define i128 @sub_i128(i128 %a, i128 %b) {
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; CHECK-LABEL: sub_i128:
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; CHECK: .functype sub_i128 (i32, i64, i64, i64, i64) -> ()
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; CHECK-NEXT: # %bb.0:
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; CHECK-NEXT: local.get 1
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; CHECK-NEXT: local.get 2
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; CHECK-NEXT: local.get 3
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; CHECK-NEXT: local.get 4
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; CHECK-NEXT: i64.sub128
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; CHECK-NEXT: local.set 3
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; CHECK-NEXT: local.set 4
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; CHECK-NEXT: local.get 0
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; CHECK-NEXT: local.get 3
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; CHECK-NEXT: i64.store 8
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; CHECK-NEXT: local.get 0
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; CHECK-NEXT: local.get 4
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; CHECK-NEXT: i64.store 0
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; CHECK-NEXT: # fallthrough-return
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%c = sub i128 %a, %b
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ret i128 %c
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}
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define i128 @mul_i128(i128 %a, i128 %b) {
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; CHECK-LABEL: mul_i128:
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; CHECK: .functype mul_i128 (i32, i64, i64, i64, i64) -> ()
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; CHECK-NEXT: .local i64
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; CHECK-NEXT: # %bb.0:
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; CHECK-NEXT: local.get 0
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; CHECK-NEXT: local.get 1
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; CHECK-NEXT: local.get 3
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; CHECK-NEXT: i64.mul_wide_u
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; CHECK-NEXT: local.set 5
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; CHECK-NEXT: i64.store 0
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; CHECK-NEXT: local.get 0
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; CHECK-NEXT: local.get 5
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; CHECK-NEXT: local.get 1
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; CHECK-NEXT: local.get 4
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; CHECK-NEXT: i64.mul
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; CHECK-NEXT: i64.add
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; CHECK-NEXT: local.get 2
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; CHECK-NEXT: local.get 3
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; CHECK-NEXT: i64.mul
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; CHECK-NEXT: i64.add
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; CHECK-NEXT: i64.store 8
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; CHECK-NEXT: # fallthrough-return
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%c = mul i128 %a, %b
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ret i128 %c
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}
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define i128 @i64_mul_wide_s(i64 %a, i64 %b) {
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; CHECK-LABEL: i64_mul_wide_s:
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; CHECK: .functype i64_mul_wide_s (i32, i64, i64) -> ()
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; CHECK-NEXT: # %bb.0:
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; CHECK-NEXT: local.get 1
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; CHECK-NEXT: local.get 2
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; CHECK-NEXT: i64.mul_wide_s
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; CHECK-NEXT: local.set 1
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; CHECK-NEXT: local.set 2
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; CHECK-NEXT: local.get 0
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; CHECK-NEXT: local.get 1
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; CHECK-NEXT: i64.store 8
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; CHECK-NEXT: local.get 0
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; CHECK-NEXT: local.get 2
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; CHECK-NEXT: i64.store 0
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; CHECK-NEXT: # fallthrough-return
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%a128 = sext i64 %a to i128
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%b128 = sext i64 %b to i128
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%c = mul i128 %a128, %b128
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ret i128 %c
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}
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define i128 @i64_mul_wide_u(i64 %a, i64 %b) {
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; CHECK-LABEL: i64_mul_wide_u:
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; CHECK: .functype i64_mul_wide_u (i32, i64, i64) -> ()
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; CHECK-NEXT: # %bb.0:
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; CHECK-NEXT: local.get 1
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; CHECK-NEXT: local.get 2
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; CHECK-NEXT: i64.mul_wide_u
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; CHECK-NEXT: local.set 1
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; CHECK-NEXT: local.set 2
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; CHECK-NEXT: local.get 0
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; CHECK-NEXT: local.get 1
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; CHECK-NEXT: i64.store 8
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; CHECK-NEXT: local.get 0
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; CHECK-NEXT: local.get 2
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; CHECK-NEXT: i64.store 0
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; CHECK-NEXT: # fallthrough-return
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%a128 = zext i64 %a to i128
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%b128 = zext i64 %b to i128
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%c = mul i128 %a128, %b128
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ret i128 %c
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}
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define i64 @mul_i128_only_lo(i128 %a, i128 %b) {
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; CHECK-LABEL: mul_i128_only_lo:
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; CHECK: .functype mul_i128_only_lo (i64, i64, i64, i64) -> (i64)
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; CHECK-NEXT: # %bb.0:
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; CHECK-NEXT: local.get 0
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; CHECK-NEXT: local.get 2
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; CHECK-NEXT: i64.mul
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; CHECK-NEXT: # fallthrough-return
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%c = mul i128 %a, %b
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%d = trunc i128 %c to i64
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ret i64 %d
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}
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declare { i64, i1 } @llvm.sadd.with.overflow.i64(i64, i64)
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declare { i64, i1 } @llvm.uadd.with.overflow.i64(i64, i64)
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; This is a codegen test to see the effect of overflowing adds on signed
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; integers with wide-arithmetic enabled. At this time it doesn't actually
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; generate anything differently than without wide-arithmetic but this has also
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; been useful for evaluating the proposal.
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define { i64, i1 } @add_wide_s(i64 %a, i64 %b) {
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; CHECK-LABEL: add_wide_s:
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; CHECK: .functype add_wide_s (i32, i64, i64) -> ()
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; CHECK-NEXT: .local i64
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; CHECK-NEXT: # %bb.0:
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; CHECK-NEXT: local.get 0
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; CHECK-NEXT: local.get 1
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; CHECK-NEXT: local.get 2
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; CHECK-NEXT: i64.add
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; CHECK-NEXT: local.tee 3
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; CHECK-NEXT: i64.store 0
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; CHECK-NEXT: local.get 0
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; CHECK-NEXT: local.get 2
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; CHECK-NEXT: i64.const 0
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; CHECK-NEXT: i64.lt_s
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; CHECK-NEXT: local.get 3
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; CHECK-NEXT: local.get 1
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; CHECK-NEXT: i64.lt_s
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; CHECK-NEXT: i32.xor
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; CHECK-NEXT: i32.store8 8
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; CHECK-NEXT: # fallthrough-return
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%pair = call { i64, i1 } @llvm.sadd.with.overflow.i64(i64 %a, i64 %b)
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ret { i64, i1 } %pair
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}
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define { i64, i1 } @add_wide_u(i64 %a, i64 %b) {
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; CHECK-LABEL: add_wide_u:
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; CHECK: .functype add_wide_u (i32, i64, i64) -> ()
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; CHECK-NEXT: # %bb.0:
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; CHECK-NEXT: local.get 1
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; CHECK-NEXT: i64.const 0
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; CHECK-NEXT: local.get 2
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; CHECK-NEXT: i64.const 0
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; CHECK-NEXT: i64.add128
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; CHECK-NEXT: local.set 1
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; CHECK-NEXT: local.set 2
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; CHECK-NEXT: local.get 0
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; CHECK-NEXT: local.get 1
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; CHECK-NEXT: i64.store8 8
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; CHECK-NEXT: local.get 0
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; CHECK-NEXT: local.get 2
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; CHECK-NEXT: i64.store 0
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; CHECK-NEXT: # fallthrough-return
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%pair = call { i64, i1 } @llvm.uadd.with.overflow.i64(i64 %a, i64 %b)
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ret { i64, i1 } %pair
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}
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; This is a model of a hypothetical `i64.add_wide3_u` instruction using LLVM
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; intrinsics. In theory this should optimize better (to the equivalent below)
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; but it doesn't currently.
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define { i64, i64 } @add_wide3_u_via_intrinsics(i64 %a, i64 %b, i64 %c) {
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; CHECK-LABEL: add_wide3_u_via_intrinsics:
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; CHECK: .functype add_wide3_u_via_intrinsics (i32, i64, i64, i64) -> ()
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; CHECK-NEXT: # %bb.0:
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; CHECK-NEXT: local.get 0
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; CHECK-NEXT: local.get 1
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; CHECK-NEXT: i64.const 0
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; CHECK-NEXT: local.get 2
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; CHECK-NEXT: i64.const 0
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; CHECK-NEXT: i64.add128
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; CHECK-NEXT: local.set 2
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; CHECK-NEXT: i64.const 0
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; CHECK-NEXT: local.get 3
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; CHECK-NEXT: i64.const 0
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; CHECK-NEXT: i64.add128
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; CHECK-NEXT: local.set 1
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; CHECK-NEXT: i64.store 0
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; CHECK-NEXT: local.get 0
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; CHECK-NEXT: local.get 2
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; CHECK-NEXT: local.get 1
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; CHECK-NEXT: i64.add
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; CHECK-NEXT: i64.store 8
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; CHECK-NEXT: # fallthrough-return
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%pair = call { i64, i1 } @llvm.uadd.with.overflow.i64(i64 %a, i64 %b)
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%t0 = extractvalue { i64, i1 } %pair, 0
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%carry1 = extractvalue { i64, i1 } %pair, 1
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%pair2 = call { i64, i1 } @llvm.uadd.with.overflow.i64(i64 %t0, i64 %c)
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%ret1 = extractvalue { i64, i1 } %pair2, 0
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%carry2 = extractvalue { i64, i1 } %pair2, 1
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%carry1_64 = zext i1 %carry1 to i64
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%carry2_64 = zext i1 %carry2 to i64
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%ret2 = add i64 %carry1_64, %carry2_64
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%r0 = insertvalue { i64, i64 } poison, i64 %ret1, 0
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%r1 = insertvalue { i64, i64 } %r0, i64 %ret2, 1
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ret { i64, i64 } %r1
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}
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; This is a model of a hypothetical `i64.add_wide3_u` instruction using 128-bit
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; integer addition. This optimizes better than the above currently.
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define { i64, i64 } @add_wide3_u_via_i128(i64 %a, i64 %b, i64 %c) {
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; CHECK-LABEL: add_wide3_u_via_i128:
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; CHECK: .functype add_wide3_u_via_i128 (i32, i64, i64, i64) -> ()
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; CHECK-NEXT: # %bb.0:
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; CHECK-NEXT: local.get 1
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; CHECK-NEXT: i64.const 0
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; CHECK-NEXT: local.get 2
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; CHECK-NEXT: i64.const 0
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; CHECK-NEXT: i64.add128
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; CHECK-NEXT: local.get 3
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; CHECK-NEXT: i64.const 0
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; CHECK-NEXT: i64.add128
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; CHECK-NEXT: local.set 1
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; CHECK-NEXT: local.set 2
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; CHECK-NEXT: local.get 0
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; CHECK-NEXT: local.get 1
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; CHECK-NEXT: i64.store 8
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; CHECK-NEXT: local.get 0
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; CHECK-NEXT: local.get 2
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; CHECK-NEXT: i64.store 0
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; CHECK-NEXT: # fallthrough-return
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%a128 = zext i64 %a to i128
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%b128 = zext i64 %b to i128
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%c128 = zext i64 %c to i128
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%t0 = add i128 %a128, %b128
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%t1 = add i128 %t0, %c128
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%result = trunc i128 %t1 to i64
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%t2 = lshr i128 %t1, 64
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%carry = trunc i128 %t2 to i64
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%ret0 = insertvalue { i64, i64 } poison, i64 %result, 0
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%ret1 = insertvalue { i64, i64 } %ret0, i64 %carry, 1
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ret { i64, i64 } %ret1
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}
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