6502/llvm-6502
1
0
Fork 0
mirror of https://github.com/c64scene-ar/llvm-6502.git synced 2025-04-06 09:44:39 +00:00
Code Issues Projects Releases Wiki Activity

[X86] Adjust cost of FP_TO_UINT v4f64->v4i32 as well

Browse Source 
Pretty obvious follow-on to r205159 to also handle conversion from double
besides float.

Fixes <rdar://problem/16373208>

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@205253 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Adam Nemet 2014-03-31 21:54:48 +00:00
parent c779918bcd
commit 4ffbb65494
2 changed files with 41 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

1
lib/Target/X86/X86TargetTransformInfo.cpp
View File

@ -528,6 +528,7 @@ unsigned X86TTI::getCastInstrCost(unsigned Opcode, Type *Dst, Type *Src) const {
// problem is that the inserts form a read-modify-write chain so latency
// should be factored in too. Inflating the cost per element by 1.
{ ISD::FP_TO_UINT, MVT::v8i32, MVT::v8f32, 8*4 },
{ ISD::FP_TO_UINT, MVT::v4i32, MVT::v4f64, 4*4 },
};
if (ST->hasAVX2()) {

40
test/Transforms/LoopVectorize/X86/fp64_to_uint32-cost-model.ll Normal file
View File

@ -0,0 +1,40 @@
; RUN: opt < %s -mcpu=core-avx2 -loop-vectorize -S | llc -mcpu=core-avx2 | FileCheck %s
target datalayout = "e-m:o-i64:64-f80:128-n8:16:32:64-S128"
target triple = "x86_64-apple-macosx"
@n = global i32 10000, align 4
@double_array = common global [10000 x double] zeroinitializer, align 16
@unsigned_array = common global [10000 x i32] zeroinitializer, align 16
; If we need to scalarize the fptoui and then use inserts to build up the
; vector again, then there is certainly no value in going 256-bit wide.
; CHECK-NOT: vpinsrd
define void @convert() {
entry:
%0 = load i32* @n, align 4
%cmp4 = icmp eq i32 %0, 0
br i1 %cmp4, label %for.end, label %for.body.preheader
for.body.preheader: ; preds = %entry
br label %for.body
for.body: ; preds = %for.body.preheader, %for.body
%indvars.iv = phi i64 [ %indvars.iv.next, %for.body ], [ 0, %for.body.preheader ]
%arrayidx = getelementptr inbounds [10000 x double]* @double_array, i64 0, i64 %indvars.iv
%1 = load double* %arrayidx, align 8
%conv = fptoui double %1 to i32
%arrayidx2 = getelementptr inbounds [10000 x i32]* @unsigned_array, i64 0, i64 %indvars.iv
store i32 %conv, i32* %arrayidx2, align 4
%indvars.iv.next = add nuw nsw i64 %indvars.iv, 1
%2 = trunc i64 %indvars.iv.next to i32
%cmp = icmp ult i32 %2, %0
br i1 %cmp, label %for.body, label %for.end.loopexit
for.end.loopexit: ; preds = %for.body
br label %for.end
for.end: ; preds = %for.end.loopexit, %entry
ret void
}