emscripten-fastcomp/test/CodeGen/X86/stack-align.ll, branch 1.13.2LLVM with the emscripten fastcomp javascript backendhttps://git.amat.us/emscripten-fastcomp/atom/test/CodeGen/X86/stack-align.ll?h=1.13.22012-08-03T23:29:17ZRefactor and check "onlyReadsMemory" before optimizing builtins.2012-08-03T23:29:17ZBob Wilsonbob.wilson@apple.com2012-08-03T23:29:17Zurn:sha1:53624a2df557b4a24f2ee98cfce1a69bf83243af
This patch is mostly just refactoring a bunch of copy-and-pasted code, but
it also adds a check that the call instructions are readnone or readonly.
That check was already present for sin, cos, sqrt, log2, and exp2 calls, but
it was missing for the rest of the builtins being handled in this code.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@161282 91177308-0d34-0410-b5e6-96231b3b80d8
Upgrade syntax of tests using volatile instructions to use 'load volatile' instead of 'volatile load', which is archaic.2011-11-27T06:54:59ZChris Lattnersabre@nondot.org2011-11-27T06:54:59Zurn:sha1:d2bf432b2b6ba02e20958953a237213d48b00f20
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@145171 91177308-0d34-0410-b5e6-96231b3b80d8
Enhance ComputeMaskedBits to know that aligned frameindexes2011-02-13T22:25:43ZChris Lattnersabre@nondot.org2011-02-13T22:25:43Zurn:sha1:0a9481f44fe4fc76e59109992940a76b2a3f9b3b
have their low bits set to zero. This allows us to optimize
out explicit stack alignment code like in stack-align.ll:test4 when
it is redundant.
Doing this causes the code generator to start turning FI+cst into
FI|cst all over the place, which is general goodness (that is the
canonical form) except that various pieces of the code generator
don't handle OR aggressively. Fix this by introducing a new
SelectionDAG::isBaseWithConstantOffset predicate, and using it
in places that are looking for ADD(X,CST). The ARM backend in
particular was missing a lot of addressing mode folding opportunities
around OR.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@125470 91177308-0d34-0410-b5e6-96231b3b80d8
Teach two-address lowering how to unfold a load to open up commuting2010-06-21T22:17:20ZDan Gohmangohman@apple.com2010-06-21T22:17:20Zurn:sha1:584fedf188e863604f7b946a931c0f40cf9c944e
opportunities. For example, this lets it emit this:
movq (%rax), %rcx
addq %rdx, %rcx
instead of this:
movq %rdx, %rcx
addq (%rax), %rcx
in the case where %rdx has subsequent uses. It's the same number
of instructions, and usually the same encoding size on x86, but
it appears faster, and in general, it may allow better scheduling
for the load.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@106493 91177308-0d34-0410-b5e6-96231b3b80d8
Fix tests to use fadd, fsub, and fmul, instead of add, sub, and mul,2010-05-03T22:36:46ZDan Gohmangohman@apple.com2010-05-03T22:36:46Zurn:sha1:d4d01154ef0cb9d84d1c1c342ec9d3115d932e99
when the type is floating-point.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102969 91177308-0d34-0410-b5e6-96231b3b80d8
Add support for the 'alignstack' attribute to the x86 backend. Fixes PR5254.2010-02-19T18:17:13ZCharles Daviscdavis@mines.edu2010-02-19T18:17:13Zurn:sha1:5dfa26795da9c521babd598ef911e6d95bd20d37
Also, FileCheck'ize a test.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@96686 91177308-0d34-0410-b5e6-96231b3b80d8
Eliminate more uses of llvm-as and llvm-dis.2009-09-08T23:54:48ZDan Gohmangohman@apple.com2009-09-08T23:54:48Zurn:sha1:36a0947820fd4aa4b8a5fa26e3f079bdf572bc81
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@81290 91177308-0d34-0410-b5e6-96231b3b80d8
Split the Add, Sub, and Mul instruction opcodes into separate2009-06-04T22:49:04ZDan Gohmangohman@apple.com2009-06-04T22:49:04Zurn:sha1:ae3a0be92e33bc716722aa600983fc1535acb122
integer and floating-point opcodes, introducing
FAdd, FSub, and FMul.
For now, the AsmParser, BitcodeReader, and IRBuilder all preserve
backwards compatability, and the Core LLVM APIs preserve backwards
compatibility for IR producers. Most front-ends won't need to change
immediately.
This implements the first step of the plan outlined here:
http://nondot.org/sabre/LLVMNotes/IntegerOverflow.txt
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@72897 91177308-0d34-0410-b5e6-96231b3b80d8
Infer alignment of loads and increase their alignment when we can tell they are 2008-01-26T19:45:50ZChris Lattnersabre@nondot.org2008-01-26T19:45:50Zurn:sha1:1329cb8d8992c34365fcc2ac0447356708157dfb
from the stack. This allows us to compile stack-align.ll to:
_test:
movsd LCPI1_0, %xmm0
movapd %xmm0, %xmm1
*** andpd 4(%esp), %xmm1
andpd _G, %xmm0
addsd %xmm1, %xmm0
movl 20(%esp), %eax
movsd %xmm0, (%eax)
ret
instead of:
_test:
movsd LCPI1_0, %xmm0
** movsd 4(%esp), %xmm1
** andpd %xmm0, %xmm1
andpd _G, %xmm0
addsd %xmm1, %xmm0
movl 20(%esp), %eax
movsd %xmm0, (%eax)
ret
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@46401 91177308-0d34-0410-b5e6-96231b3b80d8