| ; NOTE: Assertions have been autogenerated by utils/update_analyze_test_checks.py |
| ; Check memory cost model action for a load of an unusually sized integer |
| ; follow by and a trunc to a register sized integer gives a cost of 1 rather |
| ; than the expanded cost. Currently the x86 code size cost model does not use |
| ; the expanded cost and only assigns a cost of 1 to each load. |
| |
| ; RUN: opt -passes="print<cost-model>" -cost-kind=code-size 2>&1 -disable-output -mtriple=x86_64--linux-gnu < %s | FileCheck %s --check-prefix=CHECK |
| |
| ; Check that cost is 1 for unusual load to register sized load. |
| define i32 @loadUnusualIntegerWithTrunc(i128* %ptr) { |
| ; CHECK-LABEL: 'loadUnusualIntegerWithTrunc' |
| ; CHECK-NEXT: Cost Model: Found an estimated cost of 1 for instruction: %out = load i128, i128* %ptr, align 4 |
| ; CHECK-NEXT: Cost Model: Found an estimated cost of 0 for instruction: %trunc = trunc i128 %out to i32 |
| ; CHECK-NEXT: Cost Model: Found an estimated cost of 1 for instruction: ret i32 %trunc |
| ; |
| %out = load i128, i128* %ptr |
| %trunc = trunc i128 %out to i32 |
| ret i32 %trunc |
| } |
| |
| define i128 @loadUnusualInteger(i128* %ptr) { |
| ; CHECK-LABEL: 'loadUnusualInteger' |
| ; CHECK-NEXT: Cost Model: Found an estimated cost of 1 for instruction: %out = load i128, i128* %ptr, align 4 |
| ; CHECK-NEXT: Cost Model: Found an estimated cost of 1 for instruction: ret i128 %out |
| ; |
| %out = load i128, i128* %ptr |
| ret i128 %out |
| } |