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Merge pull request #1713 from mstorsjo/valgrind

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Avoid a spurious valgrind warning in DecoderIntraPredictionTest.WelsDecoderI16x16LumaPredPlane_sse2
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ruil2 2015-01-12 09:22:37 +08:00
commit 958c60d041
1 changed files with 7 additions and 0 deletions
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codec/decoder/core/x86/intra_pred.asm
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@ -259,6 +259,13 @@ WELS_EXTERN WelsDecoderI16x16LumaPredPlane_sse2
pmullw xmm7, xmm6
psubw xmm7, xmm0
; Indicate that xmm2 is fully initialized. Its actual value doesn't
; matter in SUMW_HORIZON below, but after being used in LOAD_COLUMN above,
; valgrind thinks that xmm2 contains uninitalized data (if the columns outside
; of the left are uninitialized, such as in DecUT_IntraPrediction), which taints
; r2d below, even if actually isn't based on the uninitialized data.
pxor xmm2, xmm2
SUMW_HORIZON xmm7,xmm0,xmm2
movd r2d, xmm7 ; V
movsx r2, r2w