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llvm-mirror/test/CodeGen/X86/widen_cast-1.ll
Preston Gurd d2b344c685 This patch fixes 8 out of 20 unexpected failures in "make check"
when run on an Intel Atom processor. The failures have arisen due
to changes elsewhere in the trunk over the past 8 weeks or so.

These failures were not detected by the Atom buildbot because the
CPU on the Atom buildbot was not being detected as an Atom CPU.
The fix for this problem is in Host.cpp and X86Subtarget.cpp, but
shall remain commented out until the current set of Atom test failures
are fixed.

Patch by Andy Zhang and Tyler Nowicki!

llvm-svn: 160451
2012-07-18 20:49:17 +00:00

52 lines
1.7 KiB
LLVM

; RUN: llc -march=x86 -mcpu=generic -mattr=+sse42 < %s | FileCheck %s
; RUN: llc -march=x86 -mcpu=atom -mattr=+sse42 < %s | FileCheck -check-prefix=ATOM %s
; CHECK: paddd
; CHECK: movl
; CHECK: movlpd
; Scheduler causes produce a different instruction order
; ATOM: movl
; ATOM: paddd
; ATOM: movlpd
; bitcast a v4i16 to v2i32
define void @convert(<2 x i32>* %dst, <4 x i16>* %src) nounwind {
entry:
%dst.addr = alloca <2 x i32>* ; <<2 x i32>**> [#uses=2]
%src.addr = alloca <4 x i16>* ; <<4 x i16>**> [#uses=2]
%i = alloca i32, align 4 ; <i32*> [#uses=6]
store <2 x i32>* %dst, <2 x i32>** %dst.addr
store <4 x i16>* %src, <4 x i16>** %src.addr
store i32 0, i32* %i
br label %forcond
forcond: ; preds = %forinc, %entry
%tmp = load i32* %i ; <i32> [#uses=1]
%cmp = icmp slt i32 %tmp, 4 ; <i1> [#uses=1]
br i1 %cmp, label %forbody, label %afterfor
forbody: ; preds = %forcond
%tmp1 = load i32* %i ; <i32> [#uses=1]
%tmp2 = load <2 x i32>** %dst.addr ; <<2 x i32>*> [#uses=1]
%arrayidx = getelementptr <2 x i32>* %tmp2, i32 %tmp1 ; <<2 x i32>*> [#uses=1]
%tmp3 = load i32* %i ; <i32> [#uses=1]
%tmp4 = load <4 x i16>** %src.addr ; <<4 x i16>*> [#uses=1]
%arrayidx5 = getelementptr <4 x i16>* %tmp4, i32 %tmp3 ; <<4 x i16>*> [#uses=1]
%tmp6 = load <4 x i16>* %arrayidx5 ; <<4 x i16>> [#uses=1]
%add = add <4 x i16> %tmp6, < i16 1, i16 1, i16 1, i16 1 > ; <<4 x i16>> [#uses=1]
%conv = bitcast <4 x i16> %add to <2 x i32> ; <<2 x i32>> [#uses=1]
store <2 x i32> %conv, <2 x i32>* %arrayidx
br label %forinc
forinc: ; preds = %forbody
%tmp7 = load i32* %i ; <i32> [#uses=1]
%inc = add i32 %tmp7, 1 ; <i32> [#uses=1]
store i32 %inc, i32* %i
br label %forcond
afterfor: ; preds = %forcond
ret void
}