xref: /llvm-project/llvm/test/CodeGen/X86/mul-demand.ll (revision 21d7c3bcc646f5db73bc3d21f9d1b1327b6a5ec0)
17f827ebdSSanjay Patel; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py
27f827ebdSSanjay Patel; RUN: llc < %s -mtriple=x86_64-- | FileCheck %s
37f827ebdSSanjay Patel
47f827ebdSSanjay Pateldefine i64 @muladd_demand(i64 %x, i64 %y) {
57f827ebdSSanjay Patel; CHECK-LABEL: muladd_demand:
67f827ebdSSanjay Patel; CHECK:       # %bb.0:
7*21d7c3bcSSanjay Patel; CHECK-NEXT:    movq %rsi, %rax
8*21d7c3bcSSanjay Patel; CHECK-NEXT:    shll $6, %edi
9*21d7c3bcSSanjay Patel; CHECK-NEXT:    subl %edi, %eax
107f827ebdSSanjay Patel; CHECK-NEXT:    shlq $47, %rax
117f827ebdSSanjay Patel; CHECK-NEXT:    retq
127f827ebdSSanjay Patel  %m = mul i64 %x, 131008 ; 0x0001ffc0
137f827ebdSSanjay Patel  %a = add i64 %m, %y
147f827ebdSSanjay Patel  %r = shl i64 %a, 47
157f827ebdSSanjay Patel  ret i64 %r
167f827ebdSSanjay Patel}
177f827ebdSSanjay Patel
187f827ebdSSanjay Pateldefine <2 x i64> @muladd_demand_commute(<2 x i64> %x, <2 x i64> %y) {
197f827ebdSSanjay Patel; CHECK-LABEL: muladd_demand_commute:
207f827ebdSSanjay Patel; CHECK:       # %bb.0:
21*21d7c3bcSSanjay Patel; CHECK-NEXT:    psllq $6, %xmm0
22*21d7c3bcSSanjay Patel; CHECK-NEXT:    psubq %xmm0, %xmm1
23*21d7c3bcSSanjay Patel; CHECK-NEXT:    pand {{\.?LCPI[0-9]+_[0-9]+}}(%rip), %xmm1
24*21d7c3bcSSanjay Patel; CHECK-NEXT:    movdqa %xmm1, %xmm0
257f827ebdSSanjay Patel; CHECK-NEXT:    retq
267f827ebdSSanjay Patel  %m = mul <2 x i64> %x, <i64 131008, i64 131008>
277f827ebdSSanjay Patel  %a = add <2 x i64> %y, %m
287f827ebdSSanjay Patel  %r = and <2 x i64> %a, <i64 131071, i64 131071>
297f827ebdSSanjay Patel  ret <2 x i64> %r
307f827ebdSSanjay Patel}
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