Closed Bug 472952 Opened 17 years ago Closed 17 years ago

Build libmozjs with Intel's icc compiler

Categories

(Core :: JavaScript Engine, defect)

Product:
Core
Component:
JavaScript Engine
Platform:
x86
macOS
Type:
defect
Priority:
Not set
Severity:
normal

Tracking

()

Status:
RESOLVED DUPLICATE of bug 461808

People

(Reporter: gal, Unassigned)

References

Details

Attachments

(1 file)

fixes to build with icc
3.52 KB, patch
Details | Diff | Splinter Review
No description provided.
Depends on: 472951
TEST COMPARISON FROM TO DETAILS ============================================================================= ** TOTAL **: 1.192x as fast 1091.7ms +/- 0.2% 915.8ms +/- 0.3% significant ============================================================================= 3d: 1.200x as fast 155.5ms +/- 0.8% 129.6ms +/- 0.6% significant cube: 1.198x as fast 45.3ms +/- 1.7% 37.8ms +/- 1.5% significant morph: 1.25x as fast 29.6ms +/- 1.2% 23.7ms +/- 2.0% significant raytrace: 1.184x as fast 80.6ms +/- 0.5% 68.1ms +/- 0.6% significant access: 1.158x as fast 135.6ms +/- 0.6% 117.1ms +/- 0.3% significant binary-trees: 1.088x as fast 38.3ms +/- 0.9% 35.2ms +/- 0.9% significant fannkuch: 1.21x as fast 60.7ms +/- 0.6% 50.3ms +/- 0.7% significant nbody: 1.191x as fast 23.7ms +/- 1.5% 19.9ms +/- 1.1% significant nsieve: 1.103x as fast 12.9ms +/- 1.8% 11.7ms +/- 3.0% significant bitops: 1.125x as fast 39.7ms +/- 2.3% 35.3ms +/- 1.4% significant 3bit-bits-in-byte: ?? 1.7ms +/- 20.3% 2.0ms +/- 0.0% not conclusive: might be *1.176x as slow* bits-in-byte: 1.151x as fast 10.7ms +/- 3.2% 9.3ms +/- 3.7% significant bitwise-and: 1.053x as fast 2.0ms +/- 0.0% 1.9ms +/- 11.9% significant nsieve-bits: 1.145x as fast 25.3ms +/- 1.4% 22.1ms +/- 1.0% significant controlflow: *1.040x as slow* 32.4ms +/- 1.1% 33.7ms +/- 1.0% significant recursive: *1.040x as slow* 32.4ms +/- 1.1% 33.7ms +/- 1.0% significant crypto: 1.25x as fast 60.9ms +/- 0.7% 48.8ms +/- 0.6% significant aes: 1.22x as fast 35.5ms +/- 1.1% 29.1ms +/- 1.4% significant md5: 1.36x as fast 19.1ms +/- 1.2% 14.0ms +/- 0.0% significant sha1: 1.105x as fast 6.3ms +/- 5.5% 5.7ms +/- 6.1% significant date: 1.25x as fast 217.1ms +/- 0.5% 174.0ms +/- 0.4% significant format-tofte: 1.34x as fast 117.2ms +/- 0.4% 87.6ms +/- 0.6% significant format-xparb: 1.156x as fast 99.9ms +/- 0.8% 86.4ms +/- 0.4% significant math: 1.078x as fast 40.0ms +/- 0.8% 37.1ms +/- 0.6% significant cordic: *1.152x as slow* 19.1ms +/- 1.2% 22.0ms +/- 0.0% significant partial-sums: 1.56x as fast 14.0ms +/- 0.0% 9.0ms +/- 0.0% significant spectral-norm: 1.131x as fast 6.9ms +/- 3.3% 6.1ms +/- 3.7% significant regexp: - 55.2ms +/- 0.5% 55.1ms +/- 0.7% dna: - 55.2ms +/- 0.5% 55.1ms +/- 0.7% string: 1.25x as fast 355.3ms +/- 0.2% 285.1ms +/- 0.4% significant base64: 1.26x as fast 15.4ms +/- 2.4% 12.2ms +/- 2.5% significant fasta: 1.23x as fast 70.5ms +/- 0.5% 57.2ms +/- 0.5% significant tagcloud: 1.24x as fast 109.0ms +/- 0.4% 88.2ms +/- 0.6% significant unpack-code: 1.28x as fast 129.6ms +/- 0.3% 101.6ms +/- 0.5% significant validate-input: 1.189x as fast 30.8ms +/- 1.0% 25.9ms +/- 0.9% significant
The numbers above show a 20% speedup for a PGO-ed icc build (profile input sunspider) against a GCC build. Both OPT and MacOSX. The speedups on Windows might be even more dramatic since ICC compiles the threaded interpreter whereas windows uses a switch statement.
Build instructions: CC=/opt/intel/Compiler/11.0/056/bin/ia32/icc CXX=/opt/intel/Compiler/11.0/056/bin/ia32/icpc ../configure --enable-optimize --disable-debug export PATH=/opt/intel/Compiler/11.0/056/bin/ia32:${PATH} XCFLAGS=-prof-gen make <run sunspider> make clean XCFLAGS=-prof-use make <benchmark sunspider>
Comparison V8 bleeding edge to TM built with ICC/PGO: TEST COMPARISON FROM TO DETAILS ============================================================================= ** TOTAL **: 1.023x as fast 918.8ms +/- 0.2% 898.5ms +/- 0.1% significant ============================================================================= 3d: 1.39x as fast 130.8ms +/- 0.7% 93.8ms +/- 0.5% significant cube: 1.42x as fast 38.8ms +/- 1.9% 27.3ms +/- 1.8% significant morph: *1.66x as slow* 23.7ms +/- 1.5% 39.4ms +/- 0.9% significant raytrace: 2.52x as fast 68.3ms +/- 0.5% 27.1ms +/- 0.8% significant access: 1.98x as fast 117.3ms +/- 0.6% 59.2ms +/- 1.0% significant binary-trees: 9.03x as fast 35.2ms +/- 0.9% 3.9ms +/- 5.8% significant fannkuch: 2.46x as fast 50.5ms +/- 0.7% 20.5ms +/- 1.8% significant nbody: 1.026x as fast 19.8ms +/- 1.5% 19.3ms +/- 1.8% significant nsieve: *1.31x as slow* 11.8ms +/- 2.6% 15.5ms +/- 2.4% significant bitops: *1.130x as slow* 35.4ms +/- 1.4% 40.0ms +/- 1.5% significant 3bit-bits-in-byte: *1.86x as slow* 2.1ms +/- 10.8% 3.9ms +/- 5.8% significant bits-in-byte: 1.179x as fast 9.2ms +/- 3.3% 7.8ms +/- 3.9% significant bitwise-and: *6.37x as slow* 1.9ms +/- 11.9% 12.1ms +/- 3.4% significant nsieve-bits: 1.37x as fast 22.2ms +/- 1.4% 16.2ms +/- 1.9% significant controlflow: 12.5x as fast 33.7ms +/- 1.0% 2.7ms +/- 12.8% significant recursive: 12.5x as fast 33.7ms +/- 1.0% 2.7ms +/- 12.8% significant crypto: 1.187x as fast 48.9ms +/- 0.8% 41.2ms +/- 1.1% significant aes: 1.66x as fast 29.1ms +/- 0.8% 17.5ms +/- 2.2% significant md5: 1.120x as fast 14.0ms +/- 0.0% 12.5ms +/- 3.0% significant sha1: *1.93x as slow* 5.8ms +/- 5.2% 11.2ms +/- 2.7% significant date: 1.54x as fast 174.9ms +/- 0.5% 113.7ms +/- 0.3% significant format-tofte: 1.44x as fast 88.2ms +/- 0.8% 61.2ms +/- 0.5% significant format-xparb: 1.65x as fast 86.7ms +/- 0.4% 52.5ms +/- 0.7% significant math: *1.74x as slow* 37.3ms +/- 0.9% 65.0ms +/- 0.0% significant cordic: *1.37x as slow* 22.1ms +/- 1.0% 30.3ms +/- 1.1% significant partial-sums: *2.86x as slow* 9.1ms +/- 2.5% 26.0ms +/- 0.0% significant spectral-norm: *1.43x as slow* 6.1ms +/- 3.7% 8.7ms +/- 4.0% significant regexp: *3.59x as slow* 55.6ms +/- 0.7% 199.6ms +/- 0.2% significant dna: *3.59x as slow* 55.6ms +/- 0.7% 199.6ms +/- 0.2% significant string: 1.006x as fast 284.9ms +/- 0.2% 283.3ms +/- 0.3% significant base64: *1.84x as slow* 12.2ms +/- 2.5% 22.5ms +/- 1.7% significant fasta: 1.80x as fast 57.3ms +/- 0.6% 31.9ms +/- 0.7% significant tagcloud: 1.010x as fast 88.1ms +/- 0.5% 87.2ms +/- 0.3% significant unpack-code: *1.036x as slow* 101.4ms +/- 0.4% 105.0ms +/- 0.0% significant validate-input: *1.42x as slow* 25.9ms +/- 0.9% 36.7ms +/- 1.3% significant
So it seems icc's sin() implementation is a bit off. This affects ICC -O2 and no optimization. whale:src gal$ ./Darwin_OPT.OBJ/js -e "print(Math.sin(10))" -0.5440211108893699 whale:src gal$ ./Darwin_ICC_OPT.OBJ/js -e "print(Math.sin(10))" -0.5440211108893698 whale:src gal$
MSVC: -0.5440211108893698 (tested using ff windows build). Maybe GCC is off here. This should be investigated further in a separate bug.
Status: NEW → RESOLVED
Closed: 17 years ago
Resolution: --- → DUPLICATE
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