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| author | Arnold Schwaighofer <aschwaighofer@apple.com> | 2013-03-15 18:31:01 +0000 |
|---|---|---|
| committer | Arnold Schwaighofer <aschwaighofer@apple.com> | 2013-03-15 18:31:01 +0000 |
| commit | 5193e4ebe216dd5a07ab9cc58d40de5aafaa990c (patch) | |
| tree | af0fd56a4789a5e950a4ffaf8f62ff0d0ea5ff3e /test/Analysis/CostModel | |
| parent | bcbf3fddef46f1f6e2f2408064c4b75e4b6c90f5 (diff) | |
| download | external_llvm-5193e4ebe216dd5a07ab9cc58d40de5aafaa990c.zip external_llvm-5193e4ebe216dd5a07ab9cc58d40de5aafaa990c.tar.gz external_llvm-5193e4ebe216dd5a07ab9cc58d40de5aafaa990c.tar.bz2 | |
ARM cost model: Fix costs for some vector selects
I was too pessimistic in r177105. Vector selects that fit into a legal register
type lower just fine. I was mislead by the code fragment that I was using. The
stores/loads that I saw in those cases came from lowering the conditional off
an address.
Changing the code fragment to:
%T0_3 = type <8 x i18>
%T1_3 = type <8 x i1>
define void @func_blend3(%T0_3* %loadaddr, %T0_3* %loadaddr2,
%T1_3* %blend, %T0_3* %storeaddr) {
%v0 = load %T0_3* %loadaddr
%v1 = load %T0_3* %loadaddr2
==> FROM:
;%c = load %T1_3* %blend
==> TO:
%c = icmp slt %T0_3 %v0, %v1
==> USE:
%r = select %T1_3 %c, %T0_3 %v0, %T0_3 %v1
store %T0_3 %r, %T0_3* %storeaddr
ret void
}
revealed this mistake.
radar://13403975
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@177170 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'test/Analysis/CostModel')
| -rw-r--r-- | test/Analysis/CostModel/ARM/select.ll | 10 |
1 files changed, 5 insertions, 5 deletions
diff --git a/test/Analysis/CostModel/ARM/select.ll b/test/Analysis/CostModel/ARM/select.ll index 23cee9a..34ed1ee 100644 --- a/test/Analysis/CostModel/ARM/select.ll +++ b/test/Analysis/CostModel/ARM/select.ll @@ -21,18 +21,18 @@ define void @casts() { ; Vector values ; CHECK: cost of 1 {{.*}} select %v7 = select <2 x i1> undef, <2 x i8> undef, <2 x i8> undef - ; CHECK: cost of 10 {{.*}} select + ; CHECK: cost of 1 {{.*}} select %v8 = select <4 x i1> undef, <4 x i8> undef, <4 x i8> undef - ; CHECK: cost of 17 {{.*}} select + ; CHECK: cost of 1 {{.*}} select %v9 = select <8 x i1> undef, <8 x i8> undef, <8 x i8> undef - ; CHECK: cost of 33 {{.*}} select + ; CHECK: cost of 1 {{.*}} select %v10 = select <16 x i1> undef, <16 x i8> undef, <16 x i8> undef ; CHECK: cost of 1 {{.*}} select %v11 = select <2 x i1> undef, <2 x i16> undef, <2 x i16> undef - ; CHECK: cost of 9 {{.*}} select + ; CHECK: cost of 1 {{.*}} select %v12 = select <4 x i1> undef, <4 x i16> undef, <4 x i16> undef - ; CHECK: cost of 17 {{.*}} select + ; CHECK: cost of 1 {{.*}} select %v13 = select <8 x i1> undef, <8 x i16> undef, <8 x i16> undef ; CHECK: cost of 40 {{.*}} select %v13b = select <16 x i1> undef, <16 x i16> undef, <16 x i16> undef |