xref: /llvm-project/llvm/test/Analysis/CostModel/RISCV/load-to-trunc.ll (revision e39f6c1844fab59c638d8059a6cf139adb42279a)
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
6; RUN: opt -passes="print<cost-model>" -cost-kind=code-size 2>&1 -disable-output -mtriple=riscv64 < %s | FileCheck %s --check-prefix=CHECK
7
8; Check that cost is 1 for unusual load to register sized load.
9define i32 @loadUnusualIntegerWithTrunc(ptr %ptr) {
10; CHECK-LABEL: 'loadUnusualIntegerWithTrunc'
11; CHECK-NEXT:  Cost Model: Found an estimated cost of 1 for instruction: %out = load i128, ptr %ptr, align 16
12; CHECK-NEXT:  Cost Model: Found an estimated cost of 0 for instruction: %trunc = trunc i128 %out to i32
13; CHECK-NEXT:  Cost Model: Found an estimated cost of 1 for instruction: ret i32 %trunc
14;
15  %out = load i128, ptr %ptr
16  %trunc = trunc i128 %out to i32
17  ret i32 %trunc
18}
19
20define i128 @loadUnusualInteger(ptr %ptr) {
21; CHECK-LABEL: 'loadUnusualInteger'
22; CHECK-NEXT:  Cost Model: Found an estimated cost of 2 for instruction: %out = load i128, ptr %ptr, align 16
23; CHECK-NEXT:  Cost Model: Found an estimated cost of 1 for instruction: ret i128 %out
24;
25  %out = load i128, ptr %ptr
26  ret i128 %out
27}
28