llvm-6502/test/Transforms/BBVectorize/X86/sh-rec.ll
Hal Finkel 86c88c938a BBVectorize: Use a more sophisticated check for input cost
The old checking code, which assumed that input shuffles and insert-elements
could always be folded (and thus were free) is too simple.
This can only happen in special circumstances.
Using the simple check caused infinite recursion.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@167750 91177308-0d34-0410-b5e6-96231b3b80d8
2012-11-12 21:21:02 +00:00

55 lines
2.2 KiB
LLVM

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-v64:64:64-v128:128:128-a0:0:64-s0:64:64-f80:128:128-n8:16:32:64-S128"
target triple = "x86_64-unknown-linux-gnu"
; RUN: opt < %s -mtriple=x86_64-unknown-linux-gnu -mcpu=corei7 -bb-vectorize -S | FileCheck %s
define void @ptoa() nounwind uwtable {
entry:
%call = call i8* @malloc() nounwind
br i1 undef, label %return, label %if.end10
if.end10: ; preds = %entry
%incdec.ptr = getelementptr inbounds i8* %call, i64 undef
%call17 = call i32 @ptou() nounwind
%incdec.ptr26.1 = getelementptr inbounds i8* %incdec.ptr, i64 -2
store i8 undef, i8* %incdec.ptr26.1, align 1
%div27.1 = udiv i32 %call17, 100
%rem.2 = urem i32 %div27.1, 10
%add2230.2 = or i32 %rem.2, 48
%conv25.2 = trunc i32 %add2230.2 to i8
%incdec.ptr26.2 = getelementptr inbounds i8* %incdec.ptr, i64 -3
store i8 %conv25.2, i8* %incdec.ptr26.2, align 1
%incdec.ptr26.3 = getelementptr inbounds i8* %incdec.ptr, i64 -4
store i8 undef, i8* %incdec.ptr26.3, align 1
%div27.3 = udiv i32 %call17, 10000
%rem.4 = urem i32 %div27.3, 10
%add2230.4 = or i32 %rem.4, 48
%conv25.4 = trunc i32 %add2230.4 to i8
%incdec.ptr26.4 = getelementptr inbounds i8* %incdec.ptr, i64 -5
store i8 %conv25.4, i8* %incdec.ptr26.4, align 1
%div27.4 = udiv i32 %call17, 100000
%rem.5 = urem i32 %div27.4, 10
%add2230.5 = or i32 %rem.5, 48
%conv25.5 = trunc i32 %add2230.5 to i8
%incdec.ptr26.5 = getelementptr inbounds i8* %incdec.ptr, i64 -6
store i8 %conv25.5, i8* %incdec.ptr26.5, align 1
%incdec.ptr26.6 = getelementptr inbounds i8* %incdec.ptr, i64 -7
store i8 0, i8* %incdec.ptr26.6, align 1
%incdec.ptr26.7 = getelementptr inbounds i8* %incdec.ptr, i64 -8
store i8 undef, i8* %incdec.ptr26.7, align 1
%div27.7 = udiv i32 %call17, 100000000
%rem.8 = urem i32 %div27.7, 10
%add2230.8 = or i32 %rem.8, 48
%conv25.8 = trunc i32 %add2230.8 to i8
%incdec.ptr26.8 = getelementptr inbounds i8* %incdec.ptr, i64 -9
store i8 %conv25.8, i8* %incdec.ptr26.8, align 1
unreachable
return: ; preds = %entry
ret void
; CHECK: @ptoa
}
declare noalias i8* @malloc() nounwind
declare i32 @ptou()