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llvm-mirror/test/CodeGen/X86/2012-04-26-sdglue.ll

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Reapply 155668: Fix the SD scheduler to avoid gluing the same node twice. This time, also fix the caller of AddGlue to properly handle incomplete chains. AddGlue had failure modes, but shamefully hid them from its caller. It's luck ran out. Fixes rdar://11314175: BuildSchedUnits assert. llvm-svn: 155749
2012-04-28 03:03:23 +02:00
; RUN: llc < %s -mtriple=x86_64-apple-darwin -mcpu=core-avx2 -mattr=+avx | FileCheck %s
; rdar://11314175: SD Scheduler, BuildSchedUnits assert:
; N->getNodeId() == -1 && "Node already inserted!
; It's hard to test for the ISEL condition because CodeGen optimizes
; away the bugpointed code. Just ensure the basics are still there.
Mass update to CodeGen tests to use CHECK-LABEL for labels corresponding to function definitions for more informative error messages. No functionality change and all updated tests passed locally. This update was done with the following bash script: find test/CodeGen -name "*.ll" | \ while read NAME; do echo "$NAME" if ! grep -q "^; *RUN: *llc.*debug" $NAME; then TEMP=`mktemp -t temp` cp $NAME $TEMP sed -n "s/^define [^@]*@\([A-Za-z0-9_]*\)(.*$/\1/p" < $NAME | \ while read FUNC; do sed -i '' "s/;\(.*\)\([A-Za-z0-9_-]*\):\( *\)$FUNC: *\$/;\1\2-LABEL:\3$FUNC:/g" $TEMP done sed -i '' "s/;\(.*\)-LABEL-LABEL:/;\1-LABEL:/" $TEMP sed -i '' "s/;\(.*\)-NEXT-LABEL:/;\1-NEXT:/" $TEMP sed -i '' "s/;\(.*\)-NOT-LABEL:/;\1-NOT:/" $TEMP sed -i '' "s/;\(.*\)-DAG-LABEL:/;\1-DAG:/" $TEMP mv $TEMP $NAME fi done llvm-svn: 186280
2013-07-14 08:24:09 +02:00
;CHECK-LABEL: func:
Enable MI Sched for x86. This changes the SelectionDAG scheduling preference to source order. Soon, the SelectionDAG scheduler can be bypassed saving a nice chunk of compile time. Performance differences that result from this change are often a consequence of register coalescing. The register coalescer is far from perfect. Bugs can be filed for deficiencies. On x86 SandyBridge/Haswell, the source order schedule is often preserved, particularly for small blocks. Register pressure is generally improved over the SD scheduler's ILP mode. However, we are still able to handle large blocks that require latency hiding, unlike the SD scheduler's BURR mode. MI scheduler also attempts to discover the critical path in single-block loops and adjust heuristics accordingly. The MI scheduler relies on the new machine model. This is currently unimplemented for AVX, so we may not be generating the best code yet. Unit tests are updated so they don't depend on SD scheduling heuristics. llvm-svn: 192750
2013-10-16 01:33:07 +02:00
;CHECK: vpxor
;CHECK: vinserti128
Reapply 155668: Fix the SD scheduler to avoid gluing the same node twice. This time, also fix the caller of AddGlue to properly handle incomplete chains. AddGlue had failure modes, but shamefully hid them from its caller. It's luck ran out. Fixes rdar://11314175: BuildSchedUnits assert. llvm-svn: 155749
2012-04-28 03:03:23 +02:00
;CHECK: vpshufd
;CHECK: vpshufd
;CHECK: vmulps
;CHECK: vmulps
;CHECK: ret
define void @func() nounwind ssp {
%tmp = load <4 x float>* null, align 1
%tmp14 = getelementptr <4 x float>* null, i32 2
%tmp15 = load <4 x float>* %tmp14, align 1
%tmp16 = shufflevector <4 x float> %tmp, <4 x float> <float 0.000000e+00, float undef, float undef, float undef>, <8 x i32> <i32 0, i32 1, i32 2, i32 3, i32 4, i32 4, i32 4, i32 4>
%tmp17 = call <8 x float> @llvm.x86.avx.vinsertf128.ps.256(<8 x float> %tmp16, <4 x float> undef, i8 1)
%tmp18 = bitcast <4 x float> %tmp to <16 x i8>
%tmp19 = shufflevector <16 x i8> %tmp18, <16 x i8> undef, <16 x i32> <i32 4, i32 5, i32 6, i32 7, i32 8, i32 9, i32 10, i32 11, i32 12, i32 13, i32 14, i32 15, i32 16, i32 17, i32 18, i32 19>
%tmp20 = bitcast <16 x i8> %tmp19 to <4 x float>
%tmp21 = bitcast <4 x float> %tmp15 to <16 x i8>
%tmp22 = shufflevector <16 x i8> undef, <16 x i8> %tmp21, <16 x i32> <i32 4, i32 5, i32 6, i32 7, i32 8, i32 9, i32 10, i32 11, i32 12, i32 13, i32 14, i32 15, i32 16, i32 17, i32 18, i32 19>
%tmp23 = bitcast <16 x i8> %tmp22 to <4 x float>
%tmp24 = shufflevector <4 x float> %tmp20, <4 x float> <float 0.000000e+00, float undef, float undef, float undef>, <8 x i32> <i32 0, i32 1, i32 2, i32 3, i32 4, i32 4, i32 4, i32 4>
%tmp25 = call <8 x float> @llvm.x86.avx.vinsertf128.ps.256(<8 x float> %tmp24, <4 x float> %tmp23, i8 1)
%tmp26 = fmul <8 x float> %tmp17, undef
%tmp27 = fmul <8 x float> %tmp25, undef
%tmp28 = fadd <8 x float> %tmp26, %tmp27
%tmp29 = fadd <8 x float> %tmp28, undef
%tmp30 = shufflevector <8 x float> %tmp29, <8 x float> undef, <4 x i32> <i32 0, i32 1, i32 2, i32 3>
%tmp31 = fmul <4 x float> undef, %tmp30
%tmp32 = call <8 x float> @llvm.x86.avx.vinsertf128.ps.256(<8 x float> zeroinitializer, <4 x float> %tmp31, i8 1)
%tmp33 = fadd <8 x float> undef, %tmp32
%tmp34 = call <8 x float> @llvm.x86.avx.hadd.ps.256(<8 x float> %tmp33, <8 x float> undef) nounwind
%tmp35 = fsub <8 x float> %tmp34, undef
%tmp36 = call <8 x float> @llvm.x86.avx.hadd.ps.256(<8 x float> zeroinitializer, <8 x float> %tmp35) nounwind
store <8 x float> %tmp36, <8 x float>* undef, align 32
ret void
}
declare <8 x float> @llvm.x86.avx.vinsertf128.ps.256(<8 x float>, <4 x float>, i8) nounwind readnone
declare <8 x float> @llvm.x86.avx.hadd.ps.256(<8 x float>, <8 x float>) nounwind readnone
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