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author | Jiyoung Yun <jy910.yun@samsung.com> | 2017-06-13 18:47:36 +0900 |
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committer | Jiyoung Yun <jy910.yun@samsung.com> | 2017-06-13 18:47:36 +0900 |
commit | 61d6a817e39d3bae0f47dbc09838d51db22a5d30 (patch) | |
tree | cb37caa1784bc738b976273335d6ed04a7cc80b0 /src/jit/lclvars.cpp | |
parent | 5b975f8233e8c8d17b215372f89ca713b45d6a0b (diff) | |
download | coreclr-61d6a817e39d3bae0f47dbc09838d51db22a5d30.tar.gz coreclr-61d6a817e39d3bae0f47dbc09838d51db22a5d30.tar.bz2 coreclr-61d6a817e39d3bae0f47dbc09838d51db22a5d30.zip |
Imported Upstream version 2.0.0.11992upstream/2.0.0.11992
Diffstat (limited to 'src/jit/lclvars.cpp')
-rw-r--r-- | src/jit/lclvars.cpp | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/src/jit/lclvars.cpp b/src/jit/lclvars.cpp index e64b5a1645..4770a1d2ba 100644 --- a/src/jit/lclvars.cpp +++ b/src/jit/lclvars.cpp @@ -1833,7 +1833,10 @@ bool Compiler::lvaShouldPromoteStructVar(unsigned lclNum, lvaStructPromotionInfo // TODO-PERF - Implement struct promotion for incoming multireg structs // Currently it hits assert(lvFieldCnt==1) in lclvar.cpp line 4417 - + // Also the implementation of jmp uses the 4 byte move to store + // byte parameters to the stack, so that if we have a byte field + // with something else occupying the same 4-byte slot, it will + // overwrite other fields. if (structPromotionInfo->fieldCnt != 1) { JITDUMP("Not promoting promotable struct local V%02u, because lvIsParam is true and #fields = " |