1; RUN: llc -mcpu=generic -march=x86 < %s | FileCheck %s 2; PR19858 3 4declare {i8, i1} @llvm.umul.with.overflow.i8(i8 %a, i8 %b) 5define i8 @testumulo(i32 %argc) { 6; CHECK: imulw 7; CHECK: testb %{{.+}}, %{{.+}} 8; CHECK: je [[NOOVERFLOWLABEL:.+]] 9; CHECK: {{.*}}[[NOOVERFLOWLABEL]]: 10; CHECK-NEXT: movb 11; CHECK-NEXT: retl 12top: 13 %RHS = trunc i32 %argc to i8 14 %umul = call { i8, i1 } @llvm.umul.with.overflow.i8(i8 25, i8 %RHS) 15 %ex = extractvalue { i8, i1 } %umul, 1 16 br i1 %ex, label %overflow, label %nooverlow 17 18overflow: 19 ret i8 %RHS 20 21nooverlow: 22 %umul.value = extractvalue { i8, i1 } %umul, 0 23 ret i8 %umul.value 24} 25