e39f6c1844
There are many tests that specify a target triple/CPU flags but no DataLayout which can lead to IR being generated that has unusual behaviour. This commit attempts to use the default DataLayout based on the relevant flags if there is no explicit override on the command line or in the IR file. One thing that is not currently possible to differentiate from a missing datalayout `target datalayout = ""` in the IR file since the current APIs don't allow detecting this case. If it is considered useful to support this case (instead of passing "-data-layout=" on the command line), I can change IR parsers to track whether they have seen such a directive and change the callback type. Differential Revision: https://reviews.llvm.org/D141060
28 lines
1.3 KiB
LLVM
28 lines
1.3 KiB
LLVM
; NOTE: Assertions have been autogenerated by utils/update_analyze_test_checks.py
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; Check memory cost model action for a load of an unusually sized integer
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; follow by and a trunc to a register sized integer gives a cost of 1 rather
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; than the expanded cost if it is not. This target does not currently perform
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; the expansion in the cost modelling.
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; RUN: opt -passes="print<cost-model>" -cost-kind=code-size 2>&1 -disable-output -mtriple=systemz-unknown < %s | FileCheck %s --check-prefix=CHECK
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; Check that cost is 1 for unusual load to register sized load.
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define i32 @loadUnusualIntegerWithTrunc(ptr %ptr) {
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; CHECK-LABEL: 'loadUnusualIntegerWithTrunc'
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; CHECK-NEXT: Cost Model: Found an estimated cost of 1 for instruction: %out = load i128, ptr %ptr, align 8
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; CHECK-NEXT: Cost Model: Found an estimated cost of 0 for instruction: %trunc = trunc i128 %out to i32
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; CHECK-NEXT: Cost Model: Found an estimated cost of 1 for instruction: ret i32 %trunc
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;
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%out = load i128, ptr %ptr
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%trunc = trunc i128 %out to i32
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ret i32 %trunc
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}
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define i128 @loadUnusualInteger(ptr %ptr) {
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; CHECK-LABEL: 'loadUnusualInteger'
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; CHECK-NEXT: Cost Model: Found an estimated cost of 1 for instruction: %out = load i128, ptr %ptr, align 8
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; CHECK-NEXT: Cost Model: Found an estimated cost of 1 for instruction: ret i128 %out
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;
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%out = load i128, ptr %ptr
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ret i128 %out
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}
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