1 ; RUN: opt -codegenprepare -disable-cgp-branch-opts -S < %s | FileCheck %s
2 target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128"
3 target triple = "x86_64-unknown-linux-gnu"
5 ; The first cast should be sunk into block2, in order that the
6 ; instruction selector can form an efficient
7 ; i64 * i64 -> i128 multiplication.
8 define i128 @sink(i64* %mem1, i64* %mem2) {
12 %l1 = load i64, i64* %mem1
13 %s1 = sext i64 %l1 to i128
16 ; CHECK-LABEL: block2:
21 %l2 = load i64, i64* %mem2
22 %s2 = sext i64 %l2 to i128
23 %res = mul i128 %s1, %s2
27 ; The first cast should be hoisted into block1, in order that the
28 ; instruction selector can form an extend-load.
29 define i64 @hoist(i32* %mem1, i32* %mem2) {
30 ; CHECK-LABEL: block1:
34 %l1 = load i32, i32* %mem1
37 ; CHECK-LABEL: block2:
41 %s1 = sext i32 %l1 to i64
42 %l2 = load i32, i32* %mem2
43 %s2 = sext i32 %l2 to i64
44 %res = mul i64 %s1, %s2
48 ; Make sure the cast sink logic and OptimizeExtUses don't end up in an infinite
50 define i128 @use_ext_source() {
52 %v1 = or i64 undef, undef
53 %v2 = zext i64 %v1 to i128
54 br i1 undef, label %block2, label %block3
58 %v4 = zext i64 %v3 to i128
62 %res = phi i128 [ %v2, %block1 ], [ %v4, %block2 ]