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Initial implementation of PPCTargetTransformInfo

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This provides a place to add customized operation cost information and
control some other target-specific IR-level transformations.

The only non-trivial logic in this checkin assigns a higher cost to
unaligned loads and stores (covered by the included test case).

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@173520 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Hal Finkel
2013-01-25 23:05:59 +00:00
parent f777d09f37
commit a8b289b70d
7 changed files with 277 additions and 0 deletions
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6
test/Analysis/CostModel/PowerPC/lit.local.cfg Normal file
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config.suffixes = ['.ll', '.c', '.cpp']
targets = set(config.root.targets_to_build.split())
if not 'PowerPC' in targets:
config.unsupported = True

34
test/Analysis/CostModel/PowerPC/load_store.ll Normal file
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; RUN: opt < %s -cost-model -analyze -mtriple=powerpc64-unknown-linux-gnu -mcpu=pwr7 | FileCheck %s
target datalayout = "E-p:64:64:64-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:64:64-f32:32:32-f64:64:64-f128:128:128-v128:128:128-n32:64"
target triple = "powerpc64-unknown-linux-gnu"
define i32 @stores(i32 %arg) {
; CHECK: cost of 1 {{.*}} store
store i8 undef, i8* undef, align 4
; CHECK: cost of 1 {{.*}} store
store i16 undef, i16* undef, align 4
; CHECK: cost of 1 {{.*}} store
store i32 undef, i32* undef, align 4
; CHECK: cost of 2 {{.*}} store
store i64 undef, i64* undef, align 4
; CHECK: cost of 4 {{.*}} store
store i128 undef, i128* undef, align 4
ret i32 undef
}
define i32 @loads(i32 %arg) {
; CHECK: cost of 1 {{.*}} load
load i8* undef, align 4
; CHECK: cost of 1 {{.*}} load
load i16* undef, align 4
; CHECK: cost of 1 {{.*}} load
load i32* undef, align 4
; CHECK: cost of 2 {{.*}} load
load i64* undef, align 4
; CHECK: cost of 4 {{.*}} load
load i128* undef, align 4
ret i32 undef
}