xref: /llvm-project/llvm/test/Analysis/CostModel/PowerPC/load-to-trunc.ll (revision a13ec9cd54deba3a6779ce1114503cf86a3f8658)
1; NOTE: Assertions have been autogenerated by utils/update_analyze_test_checks.py
2; Check memory cost model action for a load of an unusually sized integer
3; follow by and a trunc to a register sized integer gives a cost of 1 rather
4; than the expanded cost if it is not.
5; RUN: opt -passes="print<cost-model>" -cost-kind=code-size 2>&1 -disable-output -mtriple=powerpc64-unknown-linux-gnu < %s | FileCheck %s --check-prefix=CHECK
6
7; Check that cost is 1 for unusual load to register sized load.
8define i32 @loadUnusualIntegerWithTrunc(ptr %ptr) {
9; CHECK-LABEL: 'loadUnusualIntegerWithTrunc'
10; CHECK-NEXT:  Cost Model: Found an estimated cost of 1 for instruction: %out = load i128, ptr %ptr, align 16
11; CHECK-NEXT:  Cost Model: Found an estimated cost of 0 for instruction: %trunc = trunc i128 %out to i32
12; CHECK-NEXT:  Cost Model: Found an estimated cost of 1 for instruction: ret i32 %trunc
13;
14  %out = load i128, ptr %ptr
15  %trunc = trunc i128 %out to i32
16  ret i32 %trunc
17}
18
19define i128 @loadUnusualInteger(ptr %ptr) {
20; CHECK-LABEL: 'loadUnusualInteger'
21; CHECK-NEXT:  Cost Model: Found an estimated cost of 2 for instruction: %out = load i128, ptr %ptr, align 16
22; CHECK-NEXT:  Cost Model: Found an estimated cost of 1 for instruction: ret i128 %out
23;
24  %out = load i128, ptr %ptr
25  ret i128 %out
26}
27