1 ; RUN: opt < %s -instcombine -S | FileCheck %s 2 3 target datalayout = "e-m:o-i64:64-f80:128-n8:16:32:64-S128" 4 target triple = "x86_64-apple-macosx10.10.0" 5 6 define internal i8* @descale_zero() { 7 entry: 8 ; CHECK: load i16** inttoptr (i64 48 to i16**), align 16 9 ; CHECK-NEXT: bitcast i16* 10 ; CHECK-NEXT: ret i8* 11 %i16_ptr = load i16** inttoptr (i64 48 to i16**), align 16 12 %num = load i64* inttoptr (i64 64 to i64*), align 64 13 %num_times_2 = shl i64 %num, 1 14 %num_times_2_plus_4 = add i64 %num_times_2, 4 15 %i8_ptr = bitcast i16* %i16_ptr to i8* 16 %i8_ptr_num_times_2_plus_4 = getelementptr i8* %i8_ptr, i64 %num_times_2_plus_4 17 %num_times_neg2 = mul i64 %num, -2 18 %num_times_neg2_minus_4 = add i64 %num_times_neg2, -4 19 %addr = getelementptr i8* %i8_ptr_num_times_2_plus_4, i64 %num_times_neg2_minus_4 20 ret i8* %addr 21 } 22
