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Hi Jakob, Thanks for your reply. > > The <undef> flag goes on NewMI_1 because the virtual register B isn't live > before that instruction. > > But you probably shouldn't be doing this yourself. Your NewMI code isn't in > SSA form because B has multiple definitions. Just use a REG_SEQUENCE > instruction, and let the register allocator do the transformation

Hi, I am observing some incorrect behavior in basicaa, wherein two pointers that basicaa should determine to be MustAlias are ending up NoAlias - the other extreme :( I am blaming this on basicaa not handling inttoptr. Here is the relevant IR snippet. -------------------- %sunkaddr36 = ptrtoint %struct.BitParams* %bs to i32 %sunkaddr37 = add i32 %sunkaddr36, 16 %sunkaddr38 = inttoptr i32

Hi, I have three constants (B, C and V) and V = B + C. I want to find out if B + C wraps around. The way I'll do it is, assuming B and C are both positive, to check if V < B or C. For this I need the values of B, C and V. I tried using APInt as below. *** If (isa<Constant> (B) && isa<Constant> (C) && isa<Constant>(V)) { ConstantInt *CV =

On Wed, Jul 13, 2011 at 12:09 PM, Pranav Bhandarkar <pranavb at codeaurora.org> wrote: > Hi, > > I have three constants (B, C and V) and V = B + C. I want to find out if B + > C wraps around. The way I'll do it is, assuming B and C are both positive, > to check if V < B or C. > For this I need the values of B, C and V. I tried usi...

Hi, I have been trying to use the -mllvm -debug option for clang but without much success. Do I need to build in any specific manner for this to work ? On using -mllvm -debug as follows I get the error below. $>clang -ccc-host-triple armv7-none-linux-gnueabi -mfloat-abi=softfp -mfpu=neon -mcpu=cortex-a9 -mllvm -debug fdct.i -S clang (LLVM option parsing): Unknown command line argument

On 20 July 2011 20:24, Bhandarkar, Pranav <pranavb at quicinc.com> wrote: > I have been trying to use the -mllvm -debug option for clang but without much success. Do I need to build in any specific manner for this to work ? You need to build LLVM with assertions enabled.

On Mar 7, 2012, at 5:19 PM, Pranav Bhandarkar <pranavb at codeaurora.org> wrote: > Hi, > > I have a case that is causing me grief in the form of an assert. The prolog > Epilog inserter tries to remove Frame Index references. I have a DBG_VALUE > instruction that looks like this (alongwith the Frame Index). This is for > the Hexag...

On May 14, 2012, at 4:09 PM, "Pranav Bhandarkar" <pranavb at codeaurora.org> wrote: > Hi, > > Consider this MI code from the hexagon backend. > ------------------------------------------------------------------ > 16B %vreg0<def> = COPY %R0<kill>; IntRegs:%vreg0 > 32B %vreg1<def> = LDriw %vre...

On Jul 4, 2012, at 10:45 PM, Pranav Bhandarkar <pranavb at codeaurora.org> wrote: > Hi, > > This question relates to the undef flag in the context of sub-register def > operands. > > 1) Firstly, the documentation (comments in the source code) says that in a > sub-register def operand, the "IsUndef" flag refers to t...

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On Fri, Aug 31, 2012 at 2:48 PM, Pranav Bhandarkar <pranavb at codeaurora.org> wrote: > Hi, > > I am defining Hexagons version of ReplaceNodeResults to change the a node of > the type > A: i8 = INTRINSIC_WO_CHAIN ... , ... , > > To > B: SIGN_EXTEND (A) > > After returning from my function, the type legalizer The type legali...

On Thu, Sep 13, 2012 at 2:44 PM, Pranav Bhandarkar <pranavb at codeaurora.org>wrote: > > Can you explain why you were unable to add a small unit test to the > testsuite? > > This is the case I have. > > ****** > r3 = memb(r1+#1) > r4 = memb(r1+ #0) > .. > .. > { > p0 = r3 /*...

On 4/30/2014 5:24 PM, Craig Topper wrote: > Pranav, can you remove it? > Yes, I'll remove it. Pranav -- Qualcomm Innovation Center, Inc. is a member of Code Aurora Forum, hosted by The Linux Foundation

On 4/30/2014 2:00 PM, Matthew Curtis wrote: > On 4/30/2014 9:01 AM, Krzysztof Parzyszek wrote: >> On 4/30/2014 8:45 AM, Rafael Espíndola wrote: >>> On 30 April 2014 00:52, Craig Topper <craig.topper at gmail.com> wrote: >>>> This function is marked virtual but doesn't override anything, >>>> doesn't have >>>> any overrides, and

On Jul 5, 2012, at 6:01 PM, "Pranav Bhandarkar" <pranavb at codeaurora.org> wrote: > Hi Jakob, > >> New_MI_1:: Vreg1 = 0 ; Vreg1 and Vreg2 >> are 32 bit virt. regs. >> New_MI_2:: Vreg2 = COPY C:lo_sub_reg. >> New_MI_3:: B= REG_SEQUENCE<Vreg1, hi_sub_reg, Vreg2, lo_sub_reg> ; B &...

On Thu, Oct 25, 2012 at 3:15 PM, Pranav Bhandarkar <pranavb at codeaurora.org>wrote: > Hi, > > I have the following IR code > > </snippet> > %prev = getelementptr inbounds %struct.myStruct* %node, i32 0, i32 1 > %1 = load %struct.myStruct** %prev, align 4, !tbaa !0 > %next1 = getelementptr inbounds %struct.myStruct* %1, i32...

Hi, I am defining Hexagons version of ReplaceNodeResults to change the a node of the type A: i8 = INTRINSIC_WO_CHAIN ... , ... , To B: SIGN_EXTEND (A) After returning from my function, the type legalizer calss ReplaceValuesUsesWith to replace the uses of A with B. Unfortunately, it replaces the use of A in the new node B too. So the node now is B: SIGN_EXTEND(B) , which is clearly bad and the

Hi, This question relates to the undef flag in the context of sub-register def operands. 1) Firstly, the documentation (comments in the source code) says that in a sub-register def operand, the "IsUndef" flag refers to the part of the register that is not written. 2) Further, the documentation about readsReg() states that a sub-register def implicitly reads the other parts of the

Hi, I have a case that is causing me grief in the form of an assert. The prolog Epilog inserter tries to remove Frame Index references. I have a DBG_VALUE instruction that looks like this (alongwith the Frame Index). This is for the Hexagon backend. ************************** fi#2: size=4, align=4, at location [SP-84] DBG_VALUE <fi#2>, 0, !"fooBar"; line no:299

On Thu, Nov 8, 2012 at 6:53 PM, Pranav Bhandarkar <pranavb at codeaurora.org> wrote: > Hi, > > I am observing some incorrect behavior in basicaa, wherein two pointers that > basicaa should determine to be MustAlias are ending up NoAlias - the other > extreme :( > I am blaming this on basicaa not handling inttoptr. Here is the relevant...