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authorAurelien Jarno <aurelien@aurel32.net>2011-05-17 18:25:45 +0200
committerAurelien Jarno <aurelien@aurel32.net>2011-05-23 22:38:26 +0200
commit8c11ad25f40ee443000d2dbc0ef296ee210d86b4 (patch)
treec988cb3f41bb0c610e044a7dd115f9faef42b09e /target-arm
parent6b64b624cde336f3df1146483e7858f5fa814f95 (diff)
downloadqemu-8c11ad25f40ee443000d2dbc0ef296ee210d86b4.zip
tcg: don't keep dead outputs in registers
If an op with dead outputs is not removed, because it has side effects or has multiple output and only one dead, mark the registers as dead instead of saving them. This avoid a few register spills on TCG targets with low register count, especially with div2 and mul2 ops, or when a qemu_ld* result is not used (prefetch emulation for example). Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
Diffstat (limited to 'target-arm')
0 files changed, 0 insertions, 0 deletions