Jim Laskey
191cf943e6
1. Added the function isOpcWithIntImmediate to simplify testing of operand with
...
specified opcode and an integer constant right operand.
2. Modified ISD::SHL, ISD::SRL, ISD::SRA to use rlwinm when applied after a mask.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22761 91177308-0d34-0410-b5e6-96231b3b80d8
2005-08-11 21:59:23 +00:00
Chris Lattner
2b48bc6f95
Tidied up the use of dyn_cast<ConstantSDNode> by using isIntImmediate more.
...
Patch by Jim Laskey.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22760 91177308-0d34-0410-b5e6-96231b3b80d8
2005-08-11 17:56:50 +00:00
Chris Lattner
54abfc5ee4
Use a more efficient method of creating integer and float virtual registers
...
(avoids an extra level of indirection in MakeReg).
defined MakeIntReg using RegMap->createVirtualRegister(PPC32::GPRCRegisterClass)
defined MakeFPReg using RegMap->createVirtualRegister(PPC32::FPRCRegisterClass)
s/MakeReg(MVT::i32)/MakeIntReg/
s/MakeReg(MVT::f64)/MakeFPReg/
Patch by Jim Laskey!
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22759 91177308-0d34-0410-b5e6-96231b3b80d8
2005-08-11 17:15:31 +00:00
Nate Begeman
e1fae4a3ae
Add a select_cc optimization for recognizing abs(int). This speeds up an
...
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
2005-08-11 02:18:13 +00:00
Nate Begeman
e5d63829fd
Some SELECT_CC cleanups:
...
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
2005-08-11 01:12:20 +00:00
Nate Begeman
c24d484b78
Make SELECT illegal on PPC32, switch to using SELECT_CC, which more closely
...
reflects what the hardware is capable of. This significantly simplifies
the CC handling logic throughout the ISel.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22756 91177308-0d34-0410-b5e6-96231b3b80d8
2005-08-10 20:52:09 +00:00
Nate Begeman
9373a81e53
Add new node, SELECT_CC. This node is for targets that don't natively
...
implement SELECT.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22755 91177308-0d34-0410-b5e6-96231b3b80d8
2005-08-10 20:51:12 +00:00
Chris Lattner
b4138c475e
Changes for PPC32ISelPattern.cpp
...
1. Clean up how SelectIntImmediateExpr handles use counts.
2. "Subtract from" was not clearing hi 16 bits.
Patch by Jim Laskey
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22754 91177308-0d34-0410-b5e6-96231b3b80d8
2005-08-10 18:11:33 +00:00
Chris Lattner
7c6e452d44
Fix an oversight that may be causing PR617.
...
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22753 91177308-0d34-0410-b5e6-96231b3b80d8
2005-08-10 17:37:53 +00:00
Chris Lattner
98599ba6c6
remove some trickiness that broke yacr2 and some other programs last night
...
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22751 91177308-0d34-0410-b5e6-96231b3b80d8
2005-08-10 17:15:20 +00:00
Chris Lattner
df706e3f0c
Changed the XOR case to use the isOprNot predicate.
...
Patch by Jim Laskey!
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22750 91177308-0d34-0410-b5e6-96231b3b80d8
2005-08-10 16:35:46 +00:00
Chris Lattner
0d7d99fd44
1. Refactored handling of integer immediate values for add, or, xor and sub.
...
New routine: ISel::SelectIntImmediateExpr
2. Now checking use counts of large constants. If use count is > 2 then drop
thru so that the constant gets loaded into a register.
Source:
int %test1(int %a) {
entry:
%tmp.1 = add int %a, 123456789 ; <int> [#uses=1]
%tmp.2 = or int %tmp.1, 123456789 ; <int> [#uses=1]
%tmp.3 = xor int %tmp.2, 123456789 ; <int> [#uses=1]
%tmp.4 = sub int %tmp.3, -123456789 ; <int> [#uses=1]
ret int %tmp.4
}
Did Emit:
.machine ppc970
.text
.align 2
.globl _test1
_test1:
.LBB_test1_0: ; entry
addi r2, r3, -13035
addis r2, r2, 1884
ori r2, r2, 52501
oris r2, r2, 1883
xori r2, r2, 52501
xoris r2, r2, 1883
addi r2, r2, 52501
addis r3, r2, 1883
blr
Now Emits:
.machine ppc970
.text
.align 2
.globl _test1
_test1:
.LBB_test1_0: ; entry
lis r2, 1883
ori r2, r2, 52501
add r3, r3, r2
or r3, r3, r2
xor r3, r3, r2
add r3, r3, r2
blr
Patch by Jim Laskey!
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22749 91177308-0d34-0410-b5e6-96231b3b80d8
2005-08-10 16:34:52 +00:00
Duraid Madina
d2ff5ef654
sorry!! this is temporary; for some reason the nasty constmul code seems to
...
be an infinite loop when using g++-4.0.1*, this kills the ia64 nightly
tester. A proper fix shall be forthcoming!!! thanks for not killing me. :)
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22748 91177308-0d34-0410-b5e6-96231b3b80d8
2005-08-10 12:38:57 +00:00
Chris Lattner
979a21e766
Fix a bug compiling: select (i32 < i32), f32, f32
...
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22747 91177308-0d34-0410-b5e6-96231b3b80d8
2005-08-10 03:40:09 +00:00
Chris Lattner
94f4032448
Make loop-simplify produce better loops by turning PHI nodes like X = phi [X, Y]
...
into just Y. This often occurs when it seperates loops that have collapsed loop
headers. This implements LoopSimplify/phi-node-simplify.ll
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22746 91177308-0d34-0410-b5e6-96231b3b80d8
2005-08-10 02:07:32 +00:00
Chris Lattner
cda9ca5a4f
Allow indvar simplify to canonicalize ANY affine IV, not just affine IVs with
...
constant stride. This implements Transforms/IndVarsSimplify/variable-stride-ivs.ll
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22744 91177308-0d34-0410-b5e6-96231b3b80d8
2005-08-10 01:12:06 +00:00
Chris Lattner
05bd374b1f
Fix an obvious oops
...
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22742 91177308-0d34-0410-b5e6-96231b3b80d8
2005-08-10 00:59:40 +00:00
Chris Lattner
50fad70279
Teach LSR to strength reduce IVs that have a loop-invariant but non-constant stride.
...
For code like this:
void foo(float *a, float *b, int n, int stride_a, int stride_b) {
int i;
for (i=0; i<n; i++)
a[i*stride_a] = b[i*stride_b];
}
we now emit:
.LBB_foo2_2: ; no_exit
lfs f0, 0(r4)
stfs f0, 0(r3)
addi r7, r7, 1
add r4, r2, r4
add r3, r6, r3
cmpw cr0, r7, r5
blt .LBB_foo2_2 ; no_exit
instead of:
.LBB_foo_2: ; no_exit
mullw r8, r2, r7 ;; multiply!
slwi r8, r8, 2
lfsx f0, r4, r8
mullw r8, r2, r6 ;; multiply!
slwi r8, r8, 2
stfsx f0, r3, r8
addi r2, r2, 1
cmpw cr0, r2, r5
blt .LBB_foo_2 ; no_exit
loops with variable strides occur pretty often. For example, in SPECFP2K
there are 317 variable strides in 177.mesa, 3 in 179.art, 14 in 188.ammp,
56 in 168.wupwise, 36 in 172.mgrid.
Now we can allow indvars to turn functions written like this:
void foo2(float *a, float *b, int n, int stride_a, int stride_b) {
int i, ai = 0, bi = 0;
for (i=0; i<n; i++)
{
a[ai] = b[bi];
ai += stride_a;
bi += stride_b;
}
}
into code like the above for better analysis. With this patch, they generate
identical code.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22740 91177308-0d34-0410-b5e6-96231b3b80d8
2005-08-10 00:45:21 +00:00
Chris Lattner
c41e34520a
Fix Regression/Transforms/LoopStrengthReduce/phi_node_update_multiple_preds.ll
...
by being more careful about updating PHI nodes
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22739 91177308-0d34-0410-b5e6-96231b3b80d8
2005-08-10 00:35:32 +00:00
Chris Lattner
87265abffc
Fix some 80 column violations.
...
Once we compute the evolution for a GEP, tell SE about it. This allows users
of the GEP to know it, if the users are not direct. This allows us to compile
this testcase:
void fbSolidFillmmx(int w, unsigned char *d) {
while (w >= 64) {
*(unsigned long long *) (d + 0) = 0;
*(unsigned long long *) (d + 8) = 0;
*(unsigned long long *) (d + 16) = 0;
*(unsigned long long *) (d + 24) = 0;
*(unsigned long long *) (d + 32) = 0;
*(unsigned long long *) (d + 40) = 0;
*(unsigned long long *) (d + 48) = 0;
*(unsigned long long *) (d + 56) = 0;
w -= 64;
d += 64;
}
}
into:
.LBB_fbSolidFillmmx_2: ; no_exit
li r2, 0
stw r2, 0(r4)
stw r2, 4(r4)
stw r2, 8(r4)
stw r2, 12(r4)
stw r2, 16(r4)
stw r2, 20(r4)
stw r2, 24(r4)
stw r2, 28(r4)
stw r2, 32(r4)
stw r2, 36(r4)
stw r2, 40(r4)
stw r2, 44(r4)
stw r2, 48(r4)
stw r2, 52(r4)
stw r2, 56(r4)
stw r2, 60(r4)
addi r4, r4, 64
addi r3, r3, -64
cmpwi cr0, r3, 63
bgt .LBB_fbSolidFillmmx_2 ; no_exit
instead of:
.LBB_fbSolidFillmmx_2: ; no_exit
li r11, 0
stw r11, 0(r4)
stw r11, 4(r4)
stwx r11, r10, r4
add r12, r10, r4
stw r11, 4(r12)
stwx r11, r9, r4
add r12, r9, r4
stw r11, 4(r12)
stwx r11, r8, r4
add r12, r8, r4
stw r11, 4(r12)
stwx r11, r7, r4
add r12, r7, r4
stw r11, 4(r12)
stwx r11, r6, r4
add r12, r6, r4
stw r11, 4(r12)
stwx r11, r5, r4
add r12, r5, r4
stw r11, 4(r12)
stwx r11, r2, r4
add r12, r2, r4
stw r11, 4(r12)
addi r4, r4, 64
addi r3, r3, -64
cmpwi cr0, r3, 63
bgt .LBB_fbSolidFillmmx_2 ; no_exit
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22737 91177308-0d34-0410-b5e6-96231b3b80d8
2005-08-09 23:39:36 +00:00
Chris Lattner
a0740fbcc7
implement two helper methods
...
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22736 91177308-0d34-0410-b5e6-96231b3b80d8
2005-08-09 23:36:33 +00:00
Chris Lattner
bd8625b062
Fix spelling, fix some broken canonicalizations by my last patch
...
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22734 91177308-0d34-0410-b5e6-96231b3b80d8
2005-08-09 23:09:05 +00:00
Chris Lattner
c7e18a10d4
add a optimization note
...
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22732 91177308-0d34-0410-b5e6-96231b3b80d8
2005-08-09 22:30:57 +00:00
Chris Lattner
079a27a0de
add cc nodes to the AllNodes list so they show up in Graphviz output
...
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22731 91177308-0d34-0410-b5e6-96231b3b80d8
2005-08-09 20:40:02 +00:00
Chris Lattner
88ac32ca26
Update the targets to the new SETCC/CondCodeSDNode interfaces.
...
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22729 91177308-0d34-0410-b5e6-96231b3b80d8
2005-08-09 20:21:10 +00:00
Chris Lattner
7cf7e3f33f
Eliminate the SetCCSDNode in favor of a CondCodeSDNode class. This pulls the
...
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
2005-08-09 20:20:18 +00:00
Chris Lattner
59b21c25d4
Minor cleanup patch, no functionality changes. Written by Jim Laskey.
...
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22727 91177308-0d34-0410-b5e6-96231b3b80d8
2005-08-09 18:29:55 +00:00
Chris Lattner
2f46055cc2
Fix CodeGen/Generic/div-neg-power-2.ll, a regression from last night.
...
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22726 91177308-0d34-0410-b5e6-96231b3b80d8
2005-08-09 18:08:41 +00:00
Chris Lattner
b965ee5914
SCEVAddExpr::get() of an empty list is invalid.
...
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22724 91177308-0d34-0410-b5e6-96231b3b80d8
2005-08-09 01:13:47 +00:00
Chris Lattner
1bbae0cbf2
Implement: LoopStrengthReduce/share_ivs.ll
...
Two changes:
* Only insert one PHI node for each stride. Other values are live in
values. This cannot introduce higher register pressure than the
previous approach, and can take advantage of reg+reg addressing modes.
* Factor common base values out of uses before moving values from the
base to the immediate fields. This improves codegen by starting the
stride-specific PHI node out at a common place for each IV use.
As an example, we used to generate this for a loop in swim:
.LBB_main_no_exit_2E_6_2E_i_no_exit_2E_7_2E_i_2: ; no_exit.7.i
lfd f0, 0(r8)
stfd f0, 0(r3)
lfd f0, 0(r6)
stfd f0, 0(r7)
lfd f0, 0(r2)
stfd f0, 0(r5)
addi r9, r9, 1
addi r2, r2, 8
addi r5, r5, 8
addi r6, r6, 8
addi r7, r7, 8
addi r8, r8, 8
addi r3, r3, 8
cmpw cr0, r9, r4
bgt .LBB_main_no_exit_2E_6_2E_i_no_exit_2E_7_2E_i_1
now we emit:
.LBB_main_no_exit_2E_6_2E_i_no_exit_2E_7_2E_i_2: ; no_exit.7.i
lfdx f0, r8, r2
stfdx f0, r9, r2
lfdx f0, r5, r2
stfdx f0, r7, r2
lfdx f0, r3, r2
stfdx f0, r6, r2
addi r10, r10, 1
addi r2, r2, 8
cmpw cr0, r10, r4
bgt .LBB_main_no_exit_2E_6_2E_i_no_exit_2E_7_2E_i_1
As another more dramatic example, we used to emit this:
.LBB_main_L_90_no_exit_2E_0_2E_i16_no_exit_2E_1_2E_i19_2: ; no_exit.1.i19
lfd f0, 8(r21)
lfd f4, 8(r3)
lfd f5, 8(r27)
lfd f6, 8(r22)
lfd f7, 8(r5)
lfd f8, 8(r6)
lfd f9, 8(r30)
lfd f10, 8(r11)
lfd f11, 8(r12)
fsub f10, f10, f11
fadd f5, f4, f5
fmul f5, f5, f1
fadd f6, f6, f7
fadd f6, f6, f8
fadd f6, f6, f9
fmadd f0, f5, f6, f0
fnmsub f0, f10, f2, f0
stfd f0, 8(r4)
lfd f0, 8(r25)
lfd f5, 8(r26)
lfd f6, 8(r23)
lfd f9, 8(r28)
lfd f10, 8(r10)
lfd f12, 8(r9)
lfd f13, 8(r29)
fsub f11, f13, f11
fadd f4, f4, f5
fmul f4, f4, f1
fadd f5, f6, f9
fadd f5, f5, f10
fadd f5, f5, f12
fnmsub f0, f4, f5, f0
fnmsub f0, f11, f3, f0
stfd f0, 8(r24)
lfd f0, 8(r8)
fsub f4, f7, f8
fsub f5, f12, f10
fnmsub f0, f5, f2, f0
fnmsub f0, f4, f3, f0
stfd f0, 8(r2)
addi r20, r20, 1
addi r2, r2, 8
addi r8, r8, 8
addi r10, r10, 8
addi r12, r12, 8
addi r6, r6, 8
addi r29, r29, 8
addi r28, r28, 8
addi r26, r26, 8
addi r25, r25, 8
addi r24, r24, 8
addi r5, r5, 8
addi r23, r23, 8
addi r22, r22, 8
addi r3, r3, 8
addi r9, r9, 8
addi r11, r11, 8
addi r30, r30, 8
addi r27, r27, 8
addi r21, r21, 8
addi r4, r4, 8
cmpw cr0, r20, r7
bgt .LBB_main_L_90_no_exit_2E_0_2E_i16_no_exit_2E_1_2E_i19_1
we now emit:
.LBB_main_L_90_no_exit_2E_0_2E_i16_no_exit_2E_1_2E_i19_2: ; no_exit.1.i19
lfdx f0, r21, r20
lfdx f4, r3, r20
lfdx f5, r27, r20
lfdx f6, r22, r20
lfdx f7, r5, r20
lfdx f8, r6, r20
lfdx f9, r30, r20
lfdx f10, r11, r20
lfdx f11, r12, r20
fsub f10, f10, f11
fadd f5, f4, f5
fmul f5, f5, f1
fadd f6, f6, f7
fadd f6, f6, f8
fadd f6, f6, f9
fmadd f0, f5, f6, f0
fnmsub f0, f10, f2, f0
stfdx f0, r4, r20
lfdx f0, r25, r20
lfdx f5, r26, r20
lfdx f6, r23, r20
lfdx f9, r28, r20
lfdx f10, r10, r20
lfdx f12, r9, r20
lfdx f13, r29, r20
fsub f11, f13, f11
fadd f4, f4, f5
fmul f4, f4, f1
fadd f5, f6, f9
fadd f5, f5, f10
fadd f5, f5, f12
fnmsub f0, f4, f5, f0
fnmsub f0, f11, f3, f0
stfdx f0, r24, r20
lfdx f0, r8, r20
fsub f4, f7, f8
fsub f5, f12, f10
fnmsub f0, f5, f2, f0
fnmsub f0, f4, f3, f0
stfdx f0, r2, r20
addi r19, r19, 1
addi r20, r20, 8
cmpw cr0, r19, r7
bgt .LBB_main_L_90_no_exit_2E_0_2E_i16_no_exit_2E_1_2E_i19_1
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22722 91177308-0d34-0410-b5e6-96231b3b80d8
2005-08-09 00:18:09 +00:00
Chris Lattner
a553b0cc01
Suck the base value out of the UsersToProcess vector into the BasedUser
...
class to simplify the code. Fuse two loops.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22721 91177308-0d34-0410-b5e6-96231b3b80d8
2005-08-08 22:56:21 +00:00
Chris Lattner
44b807e3c0
Split MoveLoopVariantsToImediateField out from MoveImmediateValues. The
...
first is a correctness thing, and the later is an optzn thing. This also
is needed to support a future change.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22720 91177308-0d34-0410-b5e6-96231b3b80d8
2005-08-08 22:32:34 +00:00
Nate Begeman
d3ded2d8a7
Factor out some common code, and be smarter about when to emit load hi/lo
...
code sequences.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22719 91177308-0d34-0410-b5e6-96231b3b80d8
2005-08-08 22:22:56 +00:00
Chris Lattner
21e1a79a31
Allow tools with "consume after" options (like lli) to take more positional
...
opts than they take directly. Thanks to John C for pointing this problem
out to me!
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22717 91177308-0d34-0410-b5e6-96231b3b80d8
2005-08-08 21:57:27 +00:00
Chris Lattner
0045776d33
Remove getImmediateForOpcode, which is now dead.
...
Patch by Jim Laskey.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22716 91177308-0d34-0410-b5e6-96231b3b80d8
2005-08-08 21:34:13 +00:00
Chris Lattner
fd78454477
Add new immediate handling support for mul/div.
...
Patch by Jim Laskey!
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22715 91177308-0d34-0410-b5e6-96231b3b80d8
2005-08-08 21:33:23 +00:00
Chris Lattner
5b90917400
Add support for OR/XOR/SUB immediates that are handled with the new immediate
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way. This allows ORI/ORIS pairs, for example.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22714 91177308-0d34-0410-b5e6-96231b3b80d8
2005-08-08 21:30:29 +00:00
Chris Lattner
2f57c4da21
Modify the ISD::AND opcode case to use new immediate constant predicates.
...
Includes wider support for rotate and mask cases.
Patch by Jim Laskey.
I've requested that Jim add new regression tests the newly handled cases.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22712 91177308-0d34-0410-b5e6-96231b3b80d8
2005-08-08 21:24:57 +00:00
Chris Lattner
39c6896d22
Modify the ISD::ADD opcode case to use new immediate constant predicates.
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Includes support for 32-bit constants using addi/addis.
Patch by Jim Laskey.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22711 91177308-0d34-0410-b5e6-96231b3b80d8
2005-08-08 21:21:03 +00:00
Chris Lattner
8fd1980ce6
Modify existing support functions to use new immediate constant predicates.
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Patch by Jim Laskey
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22710 91177308-0d34-0410-b5e6-96231b3b80d8
2005-08-08 21:12:35 +00:00
Chris Lattner
cf1cf1886e
Add support predicates for future immediate constant changes.
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Patch by Jim Laskey
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22709 91177308-0d34-0410-b5e6-96231b3b80d8
2005-08-08 21:10:27 +00:00
Chris Lattner
02efa6c140
Move IsRunOfOnes to a more logical place and rename to a proper predicate form
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(lowercase isXXX).
Patch by Jim Laskey.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22708 91177308-0d34-0410-b5e6-96231b3b80d8
2005-08-08 21:08:09 +00:00
Nate Begeman
394cd13ba3
Fix JIT encoding of ppc mfocrf instruction; the operands were reversed
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22707 91177308-0d34-0410-b5e6-96231b3b80d8
2005-08-08 20:04:52 +00:00
Chris Lattner
4bc5f8071a
Use the new 'moveBefore' method to simplify some code. Really, which is
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easier to understand? :)
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22706 91177308-0d34-0410-b5e6-96231b3b80d8
2005-08-08 19:11:57 +00:00
Chris Lattner
de0132453e
Reject command lines that have too many positional arguments passed (e.g.,
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'opt x y'). This fixes PR493.
Patch contributed by Owen Anderson!
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22705 91177308-0d34-0410-b5e6-96231b3b80d8
2005-08-08 17:25:38 +00:00
Chris Lattner
3821e478a5
Not all constants are legal immediates in load/store instructions.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22704 91177308-0d34-0410-b5e6-96231b3b80d8
2005-08-08 06:25:50 +00:00
Chris Lattner
5272f3c669
Implement LoopStrengthReduce/share_code_in_preheader.ll by having one
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rewriter for all code inserted into the preheader, which is never flushed.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22702 91177308-0d34-0410-b5e6-96231b3b80d8
2005-08-08 05:47:49 +00:00
Chris Lattner
010de25f42
Implement a simple optimization for the termination condition of the loop.
...
The termination condition actually wants to use the post-incremented value
of the loop, not a new indvar with an unusual base.
On PPC, for example, this allows us to compile
LoopStrengthReduce/exit_compare_live_range.ll to:
_foo:
li r2, 0
.LBB_foo_1: ; no_exit
li r5, 0
stw r5, 0(r3)
addi r2, r2, 1
cmpw cr0, r2, r4
bne .LBB_foo_1 ; no_exit
blr
instead of:
_foo:
li r2, 1 ;; IV starts at 1, not 0
.LBB_foo_1: ; no_exit
li r5, 0
stw r5, 0(r3)
addi r5, r2, 1
cmpw cr0, r2, r4
or r2, r5, r5 ;; Reg-reg copy, extra live range
bne .LBB_foo_1 ; no_exit
blr
This implements LoopStrengthReduce/exit_compare_live_range.ll
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22699 91177308-0d34-0410-b5e6-96231b3b80d8
2005-08-08 05:28:22 +00:00
Chris Lattner
0fe34d8912
add new helper function
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22698 91177308-0d34-0410-b5e6-96231b3b80d8
2005-08-08 05:21:50 +00:00
Chris Lattner
660538c8a5
Handle 64-bit constant exprs on 64-bit targets.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22696 91177308-0d34-0410-b5e6-96231b3b80d8
2005-08-08 04:26:32 +00:00
Chris Lattner
bbf728edeb
All stats are "Number of ..."
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22694 91177308-0d34-0410-b5e6-96231b3b80d8
2005-08-07 20:02:04 +00:00
Chris Lattner
2b83af2d0f
Add some simple folds that occur in bitfield cases. Fix a minor bug in
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isHighOnes, where it would consider 0 to have high ones.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22693 91177308-0d34-0410-b5e6-96231b3b80d8
2005-08-07 07:03:10 +00:00
Chris Lattner
4c0e4cdc40
Fix typoCVS: ----------------------------------------------------------------------
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22692 91177308-0d34-0410-b5e6-96231b3b80d8
2005-08-07 07:00:52 +00:00
Chris Lattner
bf3fa976ee
add a small simplification that can be exposed after promotion/expansion
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22691 91177308-0d34-0410-b5e6-96231b3b80d8
2005-08-07 05:00:44 +00:00
Chris Lattner
ce869ee05b
* Use the new PHINode::hasConstantValue method to simplify some code
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* Teach this code to move allocas out of the loop when tail call eliminating
a call marked 'tail'. This implements TailCallElim/move_alloca_for_tail_call.ll
* Do not perform this transformation if a call is marked 'tail' and if there
are allocas that we cannot move out of the loop in #2 . Doing so would increase
the stack usage of the function. This implements fixes
PR615 and TailCallElim/dont-tce-tail-marked-call.ll.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22690 91177308-0d34-0410-b5e6-96231b3b80d8
2005-08-07 04:27:41 +00:00
Chris Lattner
3c304a3ba1
Consolidate the GPOpt stuff to all use the Subtarget, instead of still
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depending on the command line option. Now the command line option just
sets the subtarget as appropriate. G5 opts will now default to on on
G5-enabled nightly testers among other machines.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22688 91177308-0d34-0410-b5e6-96231b3b80d8
2005-08-05 22:05:03 +00:00
Chris Lattner
8c4a8735ec
adjust to change in getSubtarget() api
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22687 91177308-0d34-0410-b5e6-96231b3b80d8
2005-08-05 21:54:27 +00:00
Chris Lattner
ba25365140
Enable gp optimizations by default when available, even when a target triple
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is available, since the target triple doesn't specify whether to use gpopts
or not.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22685 91177308-0d34-0410-b5e6-96231b3b80d8
2005-08-05 21:25:13 +00:00
Chris Lattner
6281ae4bf0
add a note
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22681 91177308-0d34-0410-b5e6-96231b3b80d8
2005-08-05 19:18:32 +00:00
Chris Lattner
82299e7097
Change FindEarliestCallSeqEnd (used by libcall insertion) to use a set to
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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
2005-08-05 18:10:27 +00:00
Chris Lattner
c534395cb2
Fix a use-of-dangling-pointer bug, from the introduction of SrcValue's.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22679 91177308-0d34-0410-b5e6-96231b3b80d8
2005-08-05 16:55:31 +00:00
Chris Lattner
2f4eca30d1
Fix a latent bug in the libcall inserter that was exposed by Nate's patch
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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
2005-08-05 16:23:57 +00:00
Chris Lattner
4e624ecd07
don't crash when running the PPC backend on non-ppc hosts without specifying
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a subtarget.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22677 91177308-0d34-0410-b5e6-96231b3b80d8
2005-08-05 16:17:22 +00:00
Chris Lattner
d7231ac523
PHINode::hasConstantValue should never return the PHI itself, even if the
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PHI is its only operand.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22676 91177308-0d34-0410-b5e6-96231b3b80d8
2005-08-05 15:37:31 +00:00
Chris Lattner
80f4d88a97
Fix an iterator invalidation problem when we decide a phi has a constant value
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22675 91177308-0d34-0410-b5e6-96231b3b80d8
2005-08-05 15:34:10 +00:00
Chris Lattner
9a59fbb896
Make sure to clean CastedPointers after casts are potentially deleted.
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This fixes LSR crashes on 301.apsi, 191.fma3d, and 189.lucas
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22673 91177308-0d34-0410-b5e6-96231b3b80d8
2005-08-05 01:30:11 +00:00
Chris Lattner
68ee736694
now that hasConstantValue defaults to only returning values that dominate
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the PHI node, this ugly code can vanish.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22672 91177308-0d34-0410-b5e6-96231b3b80d8
2005-08-05 01:04:30 +00:00
Chris Lattner
8313a25d27
Invoke instructions do not dominate all successors
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22671 91177308-0d34-0410-b5e6-96231b3b80d8
2005-08-05 01:03:27 +00:00
Chris Lattner
1325b42a7d
Now that hasConstantValue is more careful w.r.t. returning values that only
...
dominate the PHI node, this code can go away. This also makes passes more
aggressive, e.g. implementing Transforms/CondProp/phisimplify2.ll
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22670 91177308-0d34-0410-b5e6-96231b3b80d8
2005-08-05 01:02:04 +00:00
Chris Lattner
b3b48e11da
Use the bool argument to hasConstantValue to decide whether the client is
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prepared to deal with return values that do not dominate the PHI. If we
cannot prove that the result dominates the PHI node, do not return it if
the client can't cope.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22669 91177308-0d34-0410-b5e6-96231b3b80d8
2005-08-05 01:00:58 +00:00
Chris Lattner
5e1b231921
This code can handle non-dominating instructions
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22667 91177308-0d34-0410-b5e6-96231b3b80d8
2005-08-05 00:57:45 +00:00
Chris Lattner
9acbd611ec
Mark hasConstantValue as a const method
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22666 91177308-0d34-0410-b5e6-96231b3b80d8
2005-08-05 00:49:06 +00:00
Nate Begeman
c523f4c096
Add an extra parameter that Chris requested
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22665 91177308-0d34-0410-b5e6-96231b3b80d8
2005-08-04 23:50:43 +00:00
Nate Begeman
a83ba0f5c9
Fix a fixme in CondPropagate.cpp by moving a PhiNode optimization into
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BasicBlock's removePredecessor routine. This requires shuffling around
the definition and implementation of hasContantValue from Utils.h,cpp into
Instructions.h,cpp
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22664 91177308-0d34-0410-b5e6-96231b3b80d8
2005-08-04 23:24:19 +00:00
Chris Lattner
26d91f1646
Modify how immediates are removed from base expressions to deal with the fact
...
that the symbolic evaluator is not always able to use subtraction to remove
expressions. This makes the code faster, and fixes the last crash on 178.galgel.
Finally, add a statistic to see how many phi nodes are inserted.
On 178.galgel, we get the follow stats:
2562 loop-reduce - Number of PHIs inserted
3927 loop-reduce - Number of GEPs strength reduced
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22662 91177308-0d34-0410-b5e6-96231b3b80d8
2005-08-04 22:34:05 +00:00
Nate Begeman
2ac4fc0320
Fix a fixme in LegalizeDAG
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22661 91177308-0d34-0410-b5e6-96231b3b80d8
2005-08-04 21:43:28 +00:00
Nate Begeman
99558806f8
Hack to naturally align doubles in the constant pool. Remove this once we
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know what The Right Thing To Do is.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22660 91177308-0d34-0410-b5e6-96231b3b80d8
2005-08-04 21:04:09 +00:00
Nate Begeman
3d72d14887
Use the new subtarget support to automatically choose the correct ABI
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and asm printer for PowerPC if one is not specified.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22659 91177308-0d34-0410-b5e6-96231b3b80d8
2005-08-04 20:49:48 +00:00
Chris Lattner
2114b273ef
* Refactor some code into a new BasedUser::RewriteInstructionToUseNewBase
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method.
* Fix a crash on 178.galgel, where we would insert expressions before PHI
nodes instead of into the PHI node predecessor blocks.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22657 91177308-0d34-0410-b5e6-96231b3b80d8
2005-08-04 20:03:32 +00:00
Chris Lattner
7a2ca56ef3
Fix a case that caused this to crash on 178.galgel
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22653 91177308-0d34-0410-b5e6-96231b3b80d8
2005-08-04 19:26:19 +00:00
Chris Lattner
7db543f887
Teach LSR about loop-variant expressions, such as loops like this:
...
for (i = 0; i < N; ++i)
A[i][foo()] = 0;
here we still want to strength reduce the A[i] part, even though foo() is
l-v.
This also simplifies some of the 'CanReduce' logic.
This implements Transforms/LoopStrengthReduce/ops_after_indvar.ll
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22652 91177308-0d34-0410-b5e6-96231b3b80d8
2005-08-04 19:08:16 +00:00
Nate Begeman
f08341457f
Remove some more dead code.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22650 91177308-0d34-0410-b5e6-96231b3b80d8
2005-08-04 18:13:56 +00:00
Chris Lattner
3416e5f645
Refactor this code substantially with the following improvements:
...
1. We only analyze instructions once, guaranteed
2. AnalyzeGetElementPtrUsers has been ripped apart and replaced with
something much simpler.
The next step is to handle expressions that are not all indvar+loop-invariant
values (e.g. handling indvar+loopvariant).
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22649 91177308-0d34-0410-b5e6-96231b3b80d8
2005-08-04 17:40:30 +00:00
Andrew Lenharth
3f55a4fcab
No, IDEFs shouldn't be JITed
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22648 91177308-0d34-0410-b5e6-96231b3b80d8
2005-08-04 15:32:36 +00:00
Misha Brukman
cd33eef1b2
* Unbreak release build
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* Add comments to #endif pragmas for readability
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22647 91177308-0d34-0410-b5e6-96231b3b80d8
2005-08-04 14:22:41 +00:00
Misha Brukman
e2d7fdf62c
* Unbreak optimized build (noticed by Eric van Riet Paap)
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* Comment #endif clauses for readability
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22646 91177308-0d34-0410-b5e6-96231b3b80d8
2005-08-04 14:16:48 +00:00
Nate Begeman
8c00f8cdc7
Add Subtarget support to PowerPC. Next up, using it.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22644 91177308-0d34-0410-b5e6-96231b3b80d8
2005-08-04 07:12:09 +00:00
Chris Lattner
49f72e68cf
refactor some code
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22643 91177308-0d34-0410-b5e6-96231b3b80d8
2005-08-04 01:19:13 +00:00
Chris Lattner
a4479ad25f
invert to if's to make the logic simpler
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22641 91177308-0d34-0410-b5e6-96231b3b80d8
2005-08-04 00:40:47 +00:00
Chris Lattner
f9186596f0
When processing outer loops and we find uses of an IV in inner loops, make
...
sure to handle the use, just don't recurse into it.
This permits us to generate this code for a simple nested loop case:
.LBB_foo_0: ; entry
stwu r1, -48(r1)
stw r29, 44(r1)
stw r30, 40(r1)
mflr r11
stw r11, 56(r1)
lis r2, ha16(L_A$non_lazy_ptr)
lwz r30, lo16(L_A$non_lazy_ptr)(r2)
li r29, 1
.LBB_foo_1: ; no_exit.0
bl L_bar$stub
li r2, 1
or r3, r30, r30
.LBB_foo_2: ; no_exit.1
lfd f0, 8(r3)
stfd f0, 0(r3)
addi r4, r2, 1
addi r3, r3, 8
cmpwi cr0, r2, 100
or r2, r4, r4
bne .LBB_foo_2 ; no_exit.1
.LBB_foo_3: ; loopexit.1
addi r30, r30, 800
addi r2, r29, 1
cmpwi cr0, r29, 100
or r29, r2, r2
bne .LBB_foo_1 ; no_exit.0
.LBB_foo_4: ; return
lwz r11, 56(r1)
mtlr r11
lwz r30, 40(r1)
lwz r29, 44(r1)
lwz r1, 0(r1)
blr
instead of this:
_foo:
.LBB_foo_0: ; entry
stwu r1, -48(r1)
stw r28, 44(r1) ;; uses an extra register.
stw r29, 40(r1)
stw r30, 36(r1)
mflr r11
stw r11, 56(r1)
li r30, 1
li r29, 0
or r28, r29, r29
.LBB_foo_1: ; no_exit.0
bl L_bar$stub
mulli r2, r28, 800 ;; unstrength-reduced multiply
lis r3, ha16(L_A$non_lazy_ptr) ;; loop invariant address computation
lwz r3, lo16(L_A$non_lazy_ptr)(r3)
add r2, r2, r3
mulli r4, r29, 800 ;; unstrength-reduced multiply
addi r3, r3, 8
add r3, r4, r3
li r4, 1
.LBB_foo_2: ; no_exit.1
lfd f0, 0(r3)
stfd f0, 0(r2)
addi r5, r4, 1
addi r2, r2, 8 ;; multiple stride 8 IV's
addi r3, r3, 8
cmpwi cr0, r4, 100
or r4, r5, r5
bne .LBB_foo_2 ; no_exit.1
.LBB_foo_3: ; loopexit.1
addi r28, r28, 1 ;;; Many IV's with stride 1
addi r29, r29, 1
addi r2, r30, 1
cmpwi cr0, r30, 100
or r30, r2, r2
bne .LBB_foo_1 ; no_exit.0
.LBB_foo_4: ; return
lwz r11, 56(r1)
mtlr r11
lwz r30, 36(r1)
lwz r29, 40(r1)
lwz r28, 44(r1)
lwz r1, 0(r1)
blr
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22640 91177308-0d34-0410-b5e6-96231b3b80d8
2005-08-04 00:14:11 +00:00
Chris Lattner
7a65839f41
Teach loop-reduce to see into nested loops, to pull out immediate values
...
pushed down by SCEV.
In a nested loop case, this allows us to emit this:
lis r3, ha16(L_A$non_lazy_ptr)
lwz r3, lo16(L_A$non_lazy_ptr)(r3)
add r2, r2, r3
li r3, 1
.LBB_foo_2: ; no_exit.1
lfd f0, 8(r2) ;; Uses offset of 8 instead of 0
stfd f0, 0(r2)
addi r4, r3, 1
addi r2, r2, 8
cmpwi cr0, r3, 100
or r3, r4, r4
bne .LBB_foo_2 ; no_exit.1
instead of this:
lis r3, ha16(L_A$non_lazy_ptr)
lwz r3, lo16(L_A$non_lazy_ptr)(r3)
add r2, r2, r3
addi r3, r3, 8
li r4, 1
.LBB_foo_2: ; no_exit.1
lfd f0, 0(r3)
stfd f0, 0(r2)
addi r5, r4, 1
addi r2, r2, 8
addi r3, r3, 8
cmpwi cr0, r4, 100
or r4, r5, r5
bne .LBB_foo_2 ; no_exit.1
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22639 91177308-0d34-0410-b5e6-96231b3b80d8
2005-08-03 23:44:42 +00:00
Chris Lattner
be3e5212e2
improve debug output
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22638 91177308-0d34-0410-b5e6-96231b3b80d8
2005-08-03 23:30:08 +00:00
Nate Begeman
1c73c7be9d
Scalar SSE: load +0.0 -> xorps/xorpd
...
Scalar SSE: a < b ? c : 0.0 -> cmpss, andps
Scalar SSE: float -> i16 needs to be promoted
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22637 91177308-0d34-0410-b5e6-96231b3b80d8
2005-08-03 23:26:28 +00:00
Chris Lattner
2351abaeab
Move from Stage 0 to Stage 1.
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Only emit one PHI node for IV uses with identical bases and strides (after
moving foldable immediates to the load/store instruction).
This implements LoopStrengthReduce/dont_insert_redundant_ops.ll, allowing
us to generate this PPC code for test1:
or r30, r3, r3
.LBB_test1_1: ; Loop
li r2, 0
stw r2, 0(r30)
stw r2, 4(r30)
bl L_pred$stub
addi r30, r30, 8
cmplwi cr0, r3, 0
bne .LBB_test1_1 ; Loop
instead of this code:
or r30, r3, r3
or r29, r3, r3
.LBB_test1_1: ; Loop
li r2, 0
stw r2, 0(r29)
stw r2, 4(r30)
bl L_pred$stub
addi r30, r30, 8 ;; Two iv's with step of 8
addi r29, r29, 8
cmplwi cr0, r3, 0
bne .LBB_test1_1 ; Loop
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22635 91177308-0d34-0410-b5e6-96231b3b80d8
2005-08-03 22:51:21 +00:00
Andrew Lenharth
dc7c0b8c22
Alpha ABI specifies stack is always 16 byte alligned, and gcc does it, so I will too
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22634 91177308-0d34-0410-b5e6-96231b3b80d8
2005-08-03 22:33:21 +00:00
Chris Lattner
ec3fb63af2
Rename IVUse to IVUsersOfOneStride, use a struct instead of a pair to
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unify some parallel vectors and get field names more descriptive than
"first" and "second". This isn't lisp afterall :)
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22633 91177308-0d34-0410-b5e6-96231b3b80d8
2005-08-03 22:21:05 +00:00
Chris Lattner
52d83e66ee
Fix a nasty dangling pointer issue. The ScalarEvolution pass would keep a
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map from instruction* to SCEVHandles. When we delete instructions, we have
to tell it about it. We would run into nasty cases where new instructions
were reallocated at old instruction addresses and get the old map values.
Bad bad bad :(
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22632 91177308-0d34-0410-b5e6-96231b3b80d8
2005-08-03 21:36:09 +00:00
Chris Lattner
4c64dd7977
Fix PR611, codegen'ing SREM of FP operands to fmod or fmodf instead of
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the sequence used for integer ops
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22629 91177308-0d34-0410-b5e6-96231b3b80d8
2005-08-03 20:31:37 +00:00
Chris Lattner
f1adce42b2
The correct fix for PR612, which also fixes
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Transforms/LowerInvoke/2005-08-03-InvokeWithPHIUse.ll
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22628 91177308-0d34-0410-b5e6-96231b3b80d8
2005-08-03 18:51:44 +00:00
Chris Lattner
6e459bf0a7
When inserting code, make sure not to insert it before PHI nodes. This
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fixes PR612 and Transforms/LowerInvoke/2005-08-03-InvokeWithPHI.ll
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22626 91177308-0d34-0410-b5e6-96231b3b80d8
2005-08-03 18:34:29 +00:00