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llvm-6502/test/CodeGen/X86/2008-10-16-SpillerBug.ll
Chris Lattner 2efbbb38ba Teach CodeGenPrepare to look through Bitcast instructions when attempting to 
optimize addressing modes.  This allows us to optimize things like isel-sink2.ll
into:

	movl	4(%esp), %eax
	cmpb	$0, 4(%eax)
	jne	LBB1_2	## F
LBB1_1:	## TB
	movl	$4, %eax
	ret
LBB1_2:	## F
	movzbl	7(%eax), %eax
	ret

instead of:

_test:
	movl	4(%esp), %eax
	cmpb	$0, 4(%eax)
	leal	4(%eax), %eax
	jne	LBB1_2	## F
LBB1_1:	## TB
	movl	$4, %eax
	ret
LBB1_2:	## F
	movzbl	3(%eax), %eax
	ret

This shrinks (e.g.) 403.gcc from 1133510 to 1128345 lines of .s.

Note that the 2008-10-16-SpillerBug.ll testcase is dubious at best, I doubt
it is really testing what it thinks it is.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@60068 91177308-0d34-0410-b5e6-96231b3b80d8
2008-11-26 00:26:16 +00:00

156 lines
11 KiB
LLVM
Raw Blame History

; RUN: llvm-as < %s | llc -relocation-model=pic -disable-fp-elim -mtriple=i386-apple-darwin | grep {andl.*7.*ecx}
%struct.XXDActiveTextureTargets = type { i64, i64, i64, i64, i64, i64 }
%struct.XXDAlphaTest = type { float, i16, i8, i8 }
%struct.XXDArrayRange = type { i8, i8, i8, i8 }
%struct.XXDBlendMode = type { i16, i16, i16, i16, %struct.XXTColor4, i16, i16, i8, i8, i8, i8 }
%struct.XXDClearColor = type { double, %struct.XXTColor4, %struct.XXTColor4, float, i32 }
%struct.XXDClipPlane = type { i32, [6 x %struct.XXTColor4] }
%struct.XXDColorBuffer = type { i16, i8, i8, [8 x i16], i8, i8, i8, i8 }
%struct.XXDColorMatrix = type { [16 x float]*, %struct.XXDImagingCC }
%struct.XXDConvolution = type { %struct.XXTColor4, %struct.XXDImagingCC, i16, i16, [0 x i32], float*, i32, i32 }
%struct.XXDDepthTest = type { i16, i16, i8, i8, i8, i8, double, double }
%struct.XXDFixedFunction = type { %struct.YYToken* }
%struct.XXDFogMode = type { %struct.XXTColor4, float, float, float, float, float, i16, i16, i16, i8, i8 }
%struct.XXDHintMode = type { i16, i16, i16, i16, i16, i16, i16, i16, i16, i16 }
%struct.XXDHistogram = type { %struct.XXTFixedColor4*, i32, i16, i8, i8 }
%struct.XXDImagingCC = type { { float, float }, { float, float }, { float, float }, { float, float } }
%struct.XXDImagingSubset = type { %struct.XXDConvolution, %struct.XXDConvolution, %struct.XXDConvolution, %struct.XXDColorMatrix, %struct.XXDMinmax, %struct.XXDHistogram, %struct.XXDImagingCC, %struct.XXDImagingCC, %struct.XXDImagingCC, %struct.XXDImagingCC, i32, [0 x i32] }
%struct.XXDLight = type { %struct.XXTColor4, %struct.XXTColor4, %struct.XXTColor4, %struct.XXTColor4, %struct.XXTCoord3, float, float, float, float, float, %struct.XXTCoord3, float, %struct.XXTCoord3, float, %struct.XXTCoord3, float, float, float, float, float }
%struct.XXDLightModel = type { %struct.XXTColor4, [8 x %struct.XXDLight], [2 x %struct.XXDMaterial], i32, i16, i16, i16, i8, i8, i8, i8, i8, i8 }
%struct.XXDLightProduct = type { %struct.XXTColor4, %struct.XXTColor4, %struct.XXTColor4 }
%struct.XXDLineMode = type { float, i32, i16, i16, i8, i8, i8, i8 }
%struct.XXDLogicOp = type { i16, i8, i8 }
%struct.XXDMaskMode = type { i32, [3 x i32], i8, i8, i8, i8, i8, i8, i8, i8 }
%struct.XXDMaterial = type { %struct.XXTColor4, %struct.XXTColor4, %struct.XXTColor4, %struct.XXTColor4, float, float, float, float, [8 x %struct.XXDLightProduct], %struct.XXTColor4, [8 x i32] }
%struct.XXDMinmax = type { %struct.XXDMinmaxTable*, i16, i8, i8, [0 x i32] }
%struct.XXDMinmaxTable = type { %struct.XXTColor4, %struct.XXTColor4 }
%struct.XXDMultisample = type { float, i8, i8, i8, i8, i8, i8, i8, i8 }
%struct.XXDPipelineProgramState = type { i8, i8, i8, i8, [0 x i32], %struct.XXTColor4* }
%struct.XXDPixelMap = type { i32*, float*, float*, float*, float*, float*, float*, float*, float*, i32*, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32 }
%struct.XXDPixelMode = type { float, float, %struct.XXDPixelStore, %struct.XXDPixelTransfer, %struct.XXDPixelMap, %struct.XXDImagingSubset, i32, i32 }
%struct.XXDPixelPack = type { i32, i32, i32, i32, i32, i32, i32, i32, i8, i8, i8, i8 }
%struct.XXDPixelStore = type { %struct.XXDPixelPack, %struct.XXDPixelPack }
%struct.XXDPixelTransfer = type { float, float, float, float, float, float, float, float, float, float, i32, i32, float, float, float, float, float, float, float, float, float, float, float, float }
%struct.XXDPointMode = type { float, float, float, float, %struct.XXTCoord3, float, i8, i8, i8, i8, i16, i16, i32, i16, i16 }
%struct.XXDPolygonMode = type { [128 x i8], float, float, i16, i16, i16, i16, i8, i8, i8, i8, i8, i8, i8, i8 }
%struct.XXDRegisterCombiners = type { i8, i8, i8, i8, i32, [2 x %struct.XXTColor4], [8 x %struct.XXDRegisterCombinersPerStageState], %struct.XXDRegisterCombinersFinalStageState }
%struct.XXDRegisterCombinersFinalStageState = type { i8, i8, i8, i8, [7 x %struct.XXDRegisterCombinersPerVariableState] }
%struct.XXDRegisterCombinersPerPortionState = type { [4 x %struct.XXDRegisterCombinersPerVariableState], i8, i8, i8, i8, i16, i16, i16, i16, i16, i16 }
%struct.XXDRegisterCombinersPerStageState = type { [2 x %struct.XXDRegisterCombinersPerPortionState], [2 x %struct.XXTColor4] }
%struct.XXDRegisterCombinersPerVariableState = type { i16, i16, i16, i16 }
%struct.XXDScissorTest = type { %struct.XXTFixedColor4, i8, i8, i8, i8 }
%struct.XXDState = type <{ i16, i16, i16, i16, i32, i32, [256 x %struct.XXTColor4], [128 x %struct.XXTColor4], %struct.XXDViewport, %struct.XXDTransform, %struct.XXDLightModel, %struct.XXDActiveTextureTargets, %struct.XXDAlphaTest, %struct.XXDBlendMode, %struct.XXDClearColor, %struct.XXDColorBuffer, %struct.XXDDepthTest, %struct.XXDArrayRange, %struct.XXDFogMode, %struct.XXDHintMode, %struct.XXDLineMode, %struct.XXDLogicOp, %struct.XXDMaskMode, %struct.XXDPixelMode, %struct.XXDPointMode, %struct.XXDPolygonMode, %struct.XXDScissorTest, i32, %struct.XXDStencilTest, [8 x %struct.XXDTextureMode], [16 x %struct.XXDTextureImageMode], %struct.XXDArrayRange, [8 x %struct.XXDTextureCoordGen], %struct.XXDClipPlane, %struct.XXDMultisample, %struct.XXDRegisterCombiners, %struct.XXDArrayRange, %struct.XXDArrayRange, [3 x %struct.XXDPipelineProgramState], %struct.XXDArrayRange, %struct.XXDTransformFeedback, i32*, %struct.XXDFixedFunction, [3 x i32], [2 x i32] }>
%struct.XXDStencilTest = type { [3 x { i32, i32, i16, i16, i16, i16 }], i32, [4 x i8] }
%struct.XXDTextureCoordGen = type { { i16, i16, %struct.XXTColor4, %struct.XXTColor4 }, { i16, i16, %struct.XXTColor4, %struct.XXTColor4 }, { i16, i16, %struct.XXTColor4, %struct.XXTColor4 }, { i16, i16, %struct.XXTColor4, %struct.XXTColor4 }, i8, i8, i8, i8 }
%struct.XXDTextureImageMode = type { float }
%struct.XXDTextureMode = type { %struct.XXTColor4, i32, i16, i16, i16, i16, i16, i16, i16, i16, i16, i16, i16, i16, i16, i16, i16, i16, float, float, i16, i16, i16, i16, i16, i16, [4 x i16], i8, i8, i8, i8, [3 x float], [4 x float], float, float }
%struct.XXDTextureRec = type opaque
%struct.XXDTransform = type <{ [24 x [16 x float]], [24 x [16 x float]], [16 x float], float, float, float, float, float, i8, i8, i8, i8, i32, i32, i32, i16, i16, i8, i8, i8, i8, i32 }>
%struct.XXDTransformFeedback = type { i8, i8, i8, i8, [0 x i32], [16 x i32], [16 x i32] }
%struct.XXDViewport = type { float, float, float, float, float, float, float, float, float, float, float, float, float, float, float, float, double, double, i32, i32, i32, i32, float, float, float, float }
%struct.XXTColor4 = type { float, float, float, float }
%struct.XXTCoord3 = type { float, float, float }
%struct.XXTFixedColor4 = type { i32, i32, i32, i32 }
%struct.XXVMTextures = type { [16 x %struct.XXDTextureRec*] }
%struct.XXVMVPContext = type { i32 }
%struct.XXVMVPStack = type { i32, i32 }
%struct.YYToken = type { { i16, i16, i32 } }
%struct._XXVMConstants = type { <4 x float>, <4 x float>, <4 x float>, <4 x float>, <4 x float>, <4 x float>, <4 x float>, <4 x float>, <4 x float>, <4 x float>, float, float, float, float, float, float, float, float, float, float, float, float, [256 x float], [4096 x i8], [8 x float], [48 x float], [128 x float], [528 x i8], { void (i8*, i8*, i32, i8*)*, float (float)*, float (float)*, float (float)*, i32 (float)* } }
@llvm.used = appending global [1 x i8*] [ i8* bitcast (void (%struct.XXDState*, <4 x float>*, <4 x float>**, %struct._XXVMConstants*, %struct.YYToken*, %struct.XXVMVPContext*, %struct.XXVMTextures*, %struct.XXVMVPStack*, <4 x float>*, <4 x float>*, <4 x float>*, <4 x float>*, <4 x float>*, <4 x float>*, <4 x float>*, <4 x float>*, [4 x <4 x float>]*, i32*, <4 x i32>*, i64)* @t to i8*) ], section "llvm.metadata" ; <[1 x i8*]*> [#uses=0]
define void @t(%struct.XXDState* %gldst, <4 x float>* %prgrm, <4 x float>** %buffs, %struct._XXVMConstants* %cnstn, %struct.YYToken* %pstrm, %struct.XXVMVPContext* %vmctx, %struct.XXVMTextures* %txtrs, %struct.XXVMVPStack* %vpstk, <4 x float>* %atr0, <4 x float>* %atr1, <4 x float>* %atr2, <4 x float>* %atr3, <4 x float>* %vtx0, <4 x float>* %vtx1, <4 x float>* %vtx2, <4 x float>* %vtx3, [4 x <4 x float>]* %tmpGbl, i32* %oldMsk, <4 x i32>* %adrGbl, i64 %key_token) nounwind {
entry:
%0 = trunc i64 %key_token to i32 ; <i32> [#uses=1]
%1 = getelementptr %struct.YYToken* %pstrm, i32 %0 ; <%struct.YYToken*> [#uses=5]
br label %bb1132
bb51: ; preds = %bb1132
%2 = getelementptr %struct.YYToken* %1, i32 %operation.0.rec, i32 0, i32 0 ; <i16*> [#uses=1]
%3 = load i16* %2, align 1 ; <i16> [#uses=3]
%4 = lshr i16 %3, 6 ; <i16> [#uses=1]
%5 = trunc i16 %4 to i8 ; <i8> [#uses=1]
%6 = zext i8 %5 to i32 ; <i32> [#uses=1]
%7 = trunc i16 %3 to i8 ; <i8> [#uses=1]
%8 = and i8 %7, 7 ; <i8> [#uses=1]
%mask5556 = zext i8 %8 to i32 ; <i32> [#uses=3]
%.sum1324 = add i32 %mask5556, 2 ; <i32> [#uses=1]
%.rec = add i32 %operation.0.rec, %.sum1324 ; <i32> [#uses=1]
%9 = bitcast %struct.YYToken* %operation.0 to i32* ; <i32*> [#uses=1]
%10 = load i32* %9, align 1 ; <i32> [#uses=1]
%11 = lshr i32 %10, 16 ; <i32> [#uses=2]
%12 = trunc i32 %11 to i8 ; <i8> [#uses=1]
%13 = and i8 %12, 1 ; <i8> [#uses=1]
%14 = lshr i16 %3, 15 ; <i16> [#uses=1]
%15 = trunc i16 %14 to i8 ; <i8> [#uses=1]
%16 = or i8 %13, %15 ; <i8> [#uses=1]
%17 = icmp eq i8 %16, 0 ; <i1> [#uses=1]
br i1 %17, label %bb94, label %bb75
bb75: ; preds = %bb51
%18 = getelementptr %struct.YYToken* %1, i32 0, i32 0, i32 0 ; <i16*> [#uses=1]
%19 = load i16* %18, align 4 ; <i16> [#uses=1]
%20 = load i16* null, align 2 ; <i16> [#uses=1]
%21 = zext i16 %19 to i64 ; <i64> [#uses=1]
%22 = zext i16 %20 to i64 ; <i64> [#uses=1]
%23 = shl i64 %22, 16 ; <i64> [#uses=1]
%.ins1177 = or i64 %23, %21 ; <i64> [#uses=1]
%.ins1175 = or i64 %.ins1177, 0 ; <i64> [#uses=1]
%24 = and i32 %11, 1 ; <i32> [#uses=1]
%.neg1333 = sub i32 %mask5556, %24 ; <i32> [#uses=1]
%.neg1335 = sub i32 %.neg1333, 0 ; <i32> [#uses=1]
%25 = sub i32 %.neg1335, 0 ; <i32> [#uses=1]
br label %bb94
bb94: ; preds = %bb75, %bb51
%extraToken.0 = phi i64 [ %.ins1175, %bb75 ], [ %extraToken.1, %bb51 ] ; <i64> [#uses=1]
%argCount.0 = phi i32 [ %25, %bb75 ], [ %mask5556, %bb51 ] ; <i32> [#uses=1]
%operation.0.sum1392 = add i32 %operation.0.rec, 1 ; <i32> [#uses=2]
%26 = getelementptr %struct.YYToken* %1, i32 %operation.0.sum1392, i32 0, i32 0 ; <i16*> [#uses=1]
%27 = load i16* %26, align 4 ; <i16> [#uses=1]
%28 = getelementptr %struct.YYToken* %1, i32 %operation.0.sum1392, i32 0, i32 1 ; <i16*> [#uses=1]
%29 = load i16* %28, align 2 ; <i16> [#uses=1]
store i16 %27, i16* null, align 8
store i16 %29, i16* null, align 2
br i1 false, label %bb1132, label %bb110
bb110: ; preds = %bb94
switch i32 %6, label %bb1078 [
i32 30, label %bb960
i32 32, label %bb801
i32 38, label %bb809
i32 78, label %bb1066
]
bb801: ; preds = %bb110
unreachable
bb809: ; preds = %bb110
unreachable
bb960: ; preds = %bb110
%30 = icmp eq i32 %argCount.0, 1 ; <i1> [#uses=1]
br i1 %30, label %bb962, label %bb965
bb962: ; preds = %bb960
unreachable
bb965: ; preds = %bb960
unreachable
bb1066: ; preds = %bb110
unreachable
bb1078: ; preds = %bb110
unreachable
bb1132: ; preds = %bb94, %entry
%extraToken.1 = phi i64 [ undef, %entry ], [ %extraToken.0, %bb94 ] ; <i64> [#uses=1]
%operation.0.rec = phi i32 [ 0, %entry ], [ %.rec, %bb94 ] ; <i32> [#uses=4]
%operation.0 = getelementptr %struct.YYToken* %1, i32 %operation.0.rec ; <%struct.YYToken*> [#uses=1]
br i1 false, label %bb1134, label %bb51
bb1134: ; preds = %bb1132
ret void
}
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