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2005-08-17Change hex float constants for the sake of VC++.Jim Laskey
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22828 91177308-0d34-0410-b5e6-96231b3b80d8
2005-08-17Add a new beta option for critical edge splitting, to avoid a problem thatChris Lattner
Nate noticed in yacr2 (and I know occurs in other places as well). This is still rough, as the critical edge blocks are not intelligently placed but is added to get some idea to see if this improves performance. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22825 91177308-0d34-0410-b5e6-96231b3b80d8
2005-08-17Fix a regression on X86, where FP values can be promoted too.Chris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22822 91177308-0d34-0410-b5e6-96231b3b80d8
2005-08-17Added generic code expansion for [signed|unsigned] i32 to [f32|f64] casts in theJim Laskey
legalizer. PowerPC now uses this expansion instead of ISel version. Example: // signed integer to double conversion double f1(signed x) { return (double)x; } // unsigned integer to double conversion double f2(unsigned x) { return (double)x; } // signed integer to float conversion float f3(signed x) { return (float)x; } // unsigned integer to float conversion float f4(unsigned x) { return (float)x; } Byte Code: internal fastcc double %_Z2f1i(int %x) { entry: %tmp.1 = cast int %x to double ; <double> [#uses=1] ret double %tmp.1 } internal fastcc double %_Z2f2j(uint %x) { entry: %tmp.1 = cast uint %x to double ; <double> [#uses=1] ret double %tmp.1 } internal fastcc float %_Z2f3i(int %x) { entry: %tmp.1 = cast int %x to float ; <float> [#uses=1] ret float %tmp.1 } internal fastcc float %_Z2f4j(uint %x) { entry: %tmp.1 = cast uint %x to float ; <float> [#uses=1] ret float %tmp.1 } internal fastcc double %_Z2g1i(int %x) { entry: %buffer = alloca [2 x uint] ; <[2 x uint]*> [#uses=3] %tmp.0 = getelementptr [2 x uint]* %buffer, int 0, int 0 ; <uint*> [#uses=1] store uint 1127219200, uint* %tmp.0 %tmp.2 = cast int %x to uint ; <uint> [#uses=1] %tmp.3 = xor uint %tmp.2, 2147483648 ; <uint> [#uses=1] %tmp.5 = getelementptr [2 x uint]* %buffer, int 0, int 1 ; <uint*> [#uses=1] store uint %tmp.3, uint* %tmp.5 %tmp.9 = cast [2 x uint]* %buffer to double* ; <double*> [#uses=1] %tmp.10 = load double* %tmp.9 ; <double> [#uses=1] %tmp.13 = load double* cast (long* %signed_bias to double*) ; <double> [#uses=1] %tmp.14 = sub double %tmp.10, %tmp.13 ; <double> [#uses=1] ret double %tmp.14 } internal fastcc double %_Z2g2j(uint %x) { entry: %buffer = alloca [2 x uint] ; <[2 x uint]*> [#uses=3] %tmp.0 = getelementptr [2 x uint]* %buffer, int 0, int 0 ; <uint*> [#uses=1] store uint 1127219200, uint* %tmp.0 %tmp.1 = getelementptr [2 x uint]* %buffer, int 0, int 1 ; <uint*> [#uses=1] store uint %x, uint* %tmp.1 %tmp.4 = cast [2 x uint]* %buffer to double* ; <double*> [#uses=1] %tmp.5 = load double* %tmp.4 ; <double> [#uses=1] %tmp.8 = load double* cast (long* %unsigned_bias to double*) ; <double> [#uses=1] %tmp.9 = sub double %tmp.5, %tmp.8 ; <double> [#uses=1] ret double %tmp.9 } internal fastcc float %_Z2g3i(int %x) { entry: %buffer = alloca [2 x uint] ; <[2 x uint]*> [#uses=3] %tmp.0 = getelementptr [2 x uint]* %buffer, int 0, int 0 ; <uint*> [#uses=1] store uint 1127219200, uint* %tmp.0 %tmp.2 = cast int %x to uint ; <uint> [#uses=1] %tmp.3 = xor uint %tmp.2, 2147483648 ; <uint> [#uses=1] %tmp.5 = getelementptr [2 x uint]* %buffer, int 0, int 1 ; <uint*> [#uses=1] store uint %tmp.3, uint* %tmp.5 %tmp.9 = cast [2 x uint]* %buffer to double* ; <double*> [#uses=1] %tmp.10 = load double* %tmp.9 ; <double> [#uses=1] %tmp.13 = load double* cast (long* %signed_bias to double*) ; <double> [#uses=1] %tmp.14 = sub double %tmp.10, %tmp.13 ; <double> [#uses=1] %tmp.16 = cast double %tmp.14 to float ; <float> [#uses=1] ret float %tmp.16 } internal fastcc float %_Z2g4j(uint %x) { entry: %buffer = alloca [2 x uint] ; <[2 x uint]*> [#uses=3] %tmp.0 = getelementptr [2 x uint]* %buffer, int 0, int 0 ; <uint*> [#uses=1] store uint 1127219200, uint* %tmp.0 %tmp.1 = getelementptr [2 x uint]* %buffer, int 0, int 1 ; <uint*> [#uses=1] store uint %x, uint* %tmp.1 %tmp.4 = cast [2 x uint]* %buffer to double* ; <double*> [#uses=1] %tmp.5 = load double* %tmp.4 ; <double> [#uses=1] %tmp.8 = load double* cast (long* %unsigned_bias to double*) ; <double> [#uses=1] %tmp.9 = sub double %tmp.5, %tmp.8 ; <double> [#uses=1] %tmp.11 = cast double %tmp.9 to float ; <float> [#uses=1] ret float %tmp.11 } PowerPC Code: .machine ppc970 .const .align 2 .CPIl1__Z2f1i_0: ; float 0x4330000080000000 .long 1501560836 ; float 4.5036e+15 .text .align 2 .globl l1__Z2f1i l1__Z2f1i: .LBBl1__Z2f1i_0: ; entry xoris r2, r3, 32768 stw r2, -4(r1) lis r2, 17200 stw r2, -8(r1) lfd f0, -8(r1) lis r2, ha16(.CPIl1__Z2f1i_0) lfs f1, lo16(.CPIl1__Z2f1i_0)(r2) fsub f1, f0, f1 blr .const .align 2 .CPIl2__Z2f2j_0: ; float 0x4330000000000000 .long 1501560832 ; float 4.5036e+15 .text .align 2 .globl l2__Z2f2j l2__Z2f2j: .LBBl2__Z2f2j_0: ; entry stw r3, -4(r1) lis r2, 17200 stw r2, -8(r1) lfd f0, -8(r1) lis r2, ha16(.CPIl2__Z2f2j_0) lfs f1, lo16(.CPIl2__Z2f2j_0)(r2) fsub f1, f0, f1 blr .const .align 2 .CPIl3__Z2f3i_0: ; float 0x4330000080000000 .long 1501560836 ; float 4.5036e+15 .text .align 2 .globl l3__Z2f3i l3__Z2f3i: .LBBl3__Z2f3i_0: ; entry xoris r2, r3, 32768 stw r2, -4(r1) lis r2, 17200 stw r2, -8(r1) lfd f0, -8(r1) lis r2, ha16(.CPIl3__Z2f3i_0) lfs f1, lo16(.CPIl3__Z2f3i_0)(r2) fsub f0, f0, f1 frsp f1, f0 blr .const .align 2 .CPIl4__Z2f4j_0: ; float 0x4330000000000000 .long 1501560832 ; float 4.5036e+15 .text .align 2 .globl l4__Z2f4j l4__Z2f4j: .LBBl4__Z2f4j_0: ; entry stw r3, -4(r1) lis r2, 17200 stw r2, -8(r1) lfd f0, -8(r1) lis r2, ha16(.CPIl4__Z2f4j_0) lfs f1, lo16(.CPIl4__Z2f4j_0)(r2) fsub f0, f0, f1 frsp f1, f0 blr git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22814 91177308-0d34-0410-b5e6-96231b3b80d8
2005-08-17add a new TargetConstant nodeChris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22813 91177308-0d34-0410-b5e6-96231b3b80d8
2005-08-16Eliminate the RegSDNode class, which 3 nodes (CopyFromReg/CopyToReg/ImplicitDef)Chris Lattner
used to tack a register number onto the node. Instead of doing this, make a new node, RegisterSDNode, which is a leaf containing a register number. These three operations just become normal DAG nodes now, instead of requiring special handling. Note that with this change, it is no longer correct to make illegal CopyFromReg/CopyToReg nodes. The legalizer will not touch them, and this is bad, so don't do it. :) git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22806 91177308-0d34-0410-b5e6-96231b3b80d8
2005-08-16Implement BR_CC and BRTWOWAY_CC. This allows the removal of a rather nastyNate Begeman
fixme from the PowerPC backend. Emit slightly better code for legalizing select_cc. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22805 91177308-0d34-0410-b5e6-96231b3b80d8
2005-08-16Allow passing a dag into dump and getOperationName. If one is availableChris Lattner
when printing a node, use it to render target operations with their target instruction name instead of "<<unknown>>". git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22804 91177308-0d34-0410-b5e6-96231b3b80d8
2005-08-16Use a extant helper to do this.Chris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22802 91177308-0d34-0410-b5e6-96231b3b80d8
2005-08-16Add some methods for dag->dag isel.Chris Lattner
Split RemoveNodeFromCSEMaps out of DeleteNodesIfDead to do it. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22801 91177308-0d34-0410-b5e6-96231b3b80d8
2005-08-14Fix last night's PPC32 regressions byNate Begeman
1. Not selecting the false value of a select_cc in the false arm, which isn't legal for nested selects. 2. Actually returning the node we created and Legalized in the FP_TO_UINT Expander. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22789 91177308-0d34-0410-b5e6-96231b3b80d8
2005-08-14Teach the legalizer how to legalize FP_TO_UINT.Nate Begeman
Teach the legalizer to promote FP_TO_UINT to FP_TO_SINT if the wider FP_TO_UINT is also illegal. This allows us on PPC to codegen unsigned short foo(float a) { return a; } as: _foo: .LBB_foo_0: ; entry fctiwz f0, f1 stfd f0, -8(r1) lwz r2, -4(r1) rlwinm r3, r2, 0, 16, 31 blr instead of: _foo: .LBB_foo_0: ; entry fctiwz f0, f1 stfd f0, -8(r1) lwz r2, -4(r1) lis r3, ha16(.CPI_foo_0) lfs f0, lo16(.CPI_foo_0)(r3) fcmpu cr0, f1, f0 blt .LBB_foo_2 ; entry .LBB_foo_1: ; entry fsubs f0, f1, f0 fctiwz f0, f0 stfd f0, -16(r1) lwz r2, -12(r1) xoris r2, r2, 32768 .LBB_foo_2: ; entry rlwinm r3, r2, 0, 16, 31 blr git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22785 91177308-0d34-0410-b5e6-96231b3b80d8
2005-08-13Remove an unncessary argument to SimplifySelectCC and add an additionalNate Begeman
assert when creating a select_cc node. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22780 91177308-0d34-0410-b5e6-96231b3b80d8
2005-08-13Fix the fabs regression on x86 by abstracting the select_cc optimizationNate Begeman
out into SimplifySelectCC. This allows both ISD::SELECT and ISD::SELECT_CC to use the same set of simplifying folds. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22779 91177308-0d34-0410-b5e6-96231b3b80d8
2005-08-12implement a couple of simple shift foldings.Chris Lattner
e.g. (X & 7) >> 3 -> 0 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22774 91177308-0d34-0410-b5e6-96231b3b80d8
2005-08-11Add a select_cc optimization for recognizing abs(int). This speeds up anNate Begeman
integer MPEG encoding loop by a factor of two. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22758 91177308-0d34-0410-b5e6-96231b3b80d8
2005-08-11Some SELECT_CC cleanups:Nate Begeman
1. move assertions for node creation to getNode() 2. legalize the values returned in ExpandOp immediately 3. Move select_cc optimizations from SELECT's getNode() to SELECT_CC's, allowing them to be cleaned up significantly. This paves the way to pick up additional optimizations on SELECT_CC, such as sum-of-absolute-differences. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22757 91177308-0d34-0410-b5e6-96231b3b80d8
2005-08-10Add new node, SELECT_CC. This node is for targets that don't nativelyNate Begeman
implement SELECT. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22755 91177308-0d34-0410-b5e6-96231b3b80d8
2005-08-10Fix an oversight that may be causing PR617.Chris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22753 91177308-0d34-0410-b5e6-96231b3b80d8
2005-08-09Fix spelling, fix some broken canonicalizations by my last patchChris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22734 91177308-0d34-0410-b5e6-96231b3b80d8
2005-08-09add cc nodes to the AllNodes list so they show up in Graphviz outputChris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22731 91177308-0d34-0410-b5e6-96231b3b80d8
2005-08-09Eliminate the SetCCSDNode in favor of a CondCodeSDNode class. This pulls theChris Lattner
CC out of the SetCC operation, making SETCC a standard ternary operation and CC's a standard DAG leaf. This will make it possible for other node to use CC's as operands in the future... git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22728 91177308-0d34-0410-b5e6-96231b3b80d8
2005-08-08Handle 64-bit constant exprs on 64-bit targets.Chris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22696 91177308-0d34-0410-b5e6-96231b3b80d8
2005-08-07add a small simplification that can be exposed after promotion/expansionChris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22691 91177308-0d34-0410-b5e6-96231b3b80d8
2005-08-05Change FindEarliestCallSeqEnd (used by libcall insertion) to use a set toChris Lattner
avoid revisiting nodes more than once. This eliminates a source of potentially exponential behavior. For a small function in 191.fma3d (hexah_stress_divergence_), this speeds up isel from taking > 20mins to taking 0.07s. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22680 91177308-0d34-0410-b5e6-96231b3b80d8
2005-08-05Fix a use-of-dangling-pointer bug, from the introduction of SrcValue's.Chris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22679 91177308-0d34-0410-b5e6-96231b3b80d8
2005-08-05Fix a latent bug in the libcall inserter that was exposed by Nate's patchChris Lattner
yesterday. This fixes whetstone and a bunch of programs in the External tests. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22678 91177308-0d34-0410-b5e6-96231b3b80d8
2005-08-04Fix a fixme in LegalizeDAGNate Begeman
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22661 91177308-0d34-0410-b5e6-96231b3b80d8
2005-08-04* Unbreak release buildMisha Brukman
* Add comments to #endif pragmas for readability git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22647 91177308-0d34-0410-b5e6-96231b3b80d8
2005-08-03Fix PR611, codegen'ing SREM of FP operands to fmod or fmodf instead ofChris Lattner
the sequence used for integer ops git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22629 91177308-0d34-0410-b5e6-96231b3b80d8
2005-08-02Update to use the new MathExtras.h support for log2 computation.Chris Lattner
Patch contributed by Jim Laskey! git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22594 91177308-0d34-0410-b5e6-96231b3b80d8
2005-08-01Fix casts from long to sbyte on ppcChris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22570 91177308-0d34-0410-b5e6-96231b3b80d8
2005-07-30Keep tabs and trailing spaces out.Jeff Cohen
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22565 91177308-0d34-0410-b5e6-96231b3b80d8
2005-07-30fix float->long conversions on x86Chris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22563 91177308-0d34-0410-b5e6-96231b3b80d8
2005-07-30Allow targets to have custom expanders for FP_TO_*INT conversions whereChris Lattner
both the src and dest values are legal git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22555 91177308-0d34-0410-b5e6-96231b3b80d8
2005-07-29Allow targets to define custom expanders for FP_TO_*INTChris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22548 91177308-0d34-0410-b5e6-96231b3b80d8
2005-07-29allow a target to request that unknown FP_TO_*INT conversion be promoted toChris Lattner
a larger integer destination. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22547 91177308-0d34-0410-b5e6-96231b3b80d8
2005-07-28instead of having all conversions be handled by one case value, and then haveChris Lattner
subcases inside, break things out earlier. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22546 91177308-0d34-0410-b5e6-96231b3b80d8
2005-07-28new is not a valid default anywhere, so make this pure virtualAndrew Lenharth
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22542 91177308-0d34-0410-b5e6-96231b3b80d8
2005-07-27Fix debug info to not print out recently freed memory.Chris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22529 91177308-0d34-0410-b5e6-96231b3b80d8
2005-07-27Print symbolic register names in debug dumpsChris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22528 91177308-0d34-0410-b5e6-96231b3b80d8
2005-07-27Eliminate all remaining tabs and trailing spaces.Jeff Cohen
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22523 91177308-0d34-0410-b5e6-96231b3b80d8
2005-07-19Remove unnecessary FP_EXTEND. This causes worse codegen for SSE.Nate Begeman
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22469 91177308-0d34-0410-b5e6-96231b3b80d8
2005-07-19For: memory operations -> storesReid Spencer
This is the first incremental patch to implement this feature. It adds no functionality to LLVM but setup up the information needed from targets in order to implement the optimization correctly. Each target needs to specify the maximum number of store operations for conversion of the llvm.memset, llvm.memcpy, and llvm.memmove intrinsics into a sequence of store operations. The limit needs to be chosen at the threshold of performance for such an optimization (generally smallish). The target also needs to specify whether the target can support unaligned stores for multi-byte store operations. This helps ensure the optimization doesn't generate code that will trap on an alignment errors. More patches to follow. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22468 91177308-0d34-0410-b5e6-96231b3b80d8
2005-07-18The assertion was wrong: the code only worked for i64. While we're at it,Chris Lattner
expand the code to work for all integer datatypes. This should unbreak alpha. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22464 91177308-0d34-0410-b5e6-96231b3b80d8
2005-07-16Only get the .bss and .data sections when needed instead of unconditionally.Chris Lattner
This allows is to not emit empty sections when .data or .bss is not used. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22457 91177308-0d34-0410-b5e6-96231b3b80d8
2005-07-16Refactor getSection() method to make it easier to use.Chris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22455 91177308-0d34-0410-b5e6-96231b3b80d8
2005-07-16Major refactor of the ELFWriter code. Instead of building up one bigChris Lattner
vector that represents the .o file at once, build up a vector for each section of the .o file. This is needed because the .o file writer needs to be able to switch between sections as it emits them (e.g. switch between the .text section and the .rel section when emitting code). This patch has no functionality change. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22453 91177308-0d34-0410-b5e6-96231b3b80d8
2005-07-16Teach the legalizer how to promote SINT_TO_FP to a wider SINT_TO_FP thatNate Begeman
the target natively supports. This eliminates some special-case code from the x86 backend and generates better code as well. For an i8 to f64 conversion, before & after: _x87 before: subl $2, %esp movb 6(%esp), %al movsbw %al, %ax movw %ax, (%esp) filds (%esp) addl $2, %esp ret _x87 after: subl $2, %esp movsbw 6(%esp), %ax movw %ax, (%esp) filds (%esp) addl $2, %esp ret _sse before: subl $12, %esp movb 16(%esp), %al movsbl %al, %eax cvtsi2sd %eax, %xmm0 addl $12, %esp ret _sse after: subl $12, %esp movsbl 16(%esp), %eax cvtsi2sd %eax, %xmm0 addl $12, %esp ret git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22452 91177308-0d34-0410-b5e6-96231b3b80d8
2005-07-16Break the code for expanding UINT_TO_FP operations out into its ownChris Lattner
SelectionDAGLegalize::ExpandLegalUINT_TO_FP method. Add a new method, PromoteLegalUINT_TO_FP, which allows targets to request that UINT_TO_FP operations be promoted to a larger input type. This is useful for targets that have some UINT_TO_FP or SINT_TO_FP operations but not all of them (like X86). The same should be done with SINT_TO_FP, but this patch does not do that yet. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22447 91177308-0d34-0410-b5e6-96231b3b80d8
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