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      1 ; RUN: llc -mcpu=core-avx2 -march=x86-64 < %s | FileCheck %s
      2 
      3 define i128 @f1(i64 %a, i64 %b) {
      4   %x = zext i64 %a to i128
      5   %y = zext i64 %b to i128
      6   %r = mul i128 %x, %y
      7 ; CHECK: f1
      8 ; CHECK: mulxq
      9 ; CHECK: ret
     10   ret i128 %r
     11 }
     12 
     13 define i128 @f2(i64 %a, i64* %p) {
     14   %b = load i64* %p
     15   %x = zext i64 %a to i128
     16   %y = zext i64 %b to i128
     17   %r = mul i128 %x, %y
     18 ; CHECK: f2
     19 ; CHECK: mulxq ({{.+}}), %{{.+}}, %{{.+}}
     20 ; CHECK: ret
     21   ret i128 %r
     22 }
     23