diff options
Diffstat (limited to 'src/cmd/compile/internal/ssa/rewriteAMD64.go')
| -rw-r--r-- | src/cmd/compile/internal/ssa/rewriteAMD64.go | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/src/cmd/compile/internal/ssa/rewriteAMD64.go b/src/cmd/compile/internal/ssa/rewriteAMD64.go index d09e706fdd..7d07c66ec0 100644 --- a/src/cmd/compile/internal/ssa/rewriteAMD64.go +++ b/src/cmd/compile/internal/ssa/rewriteAMD64.go @@ -9753,7 +9753,7 @@ func rewriteValueAMD64_OpAMD64MULQconst(v *Value, config *Config) bool { b := v.Block _ = b // match: (MULQconst [c] (MULQconst [d] x)) - // cond: + // cond: is32Bit(c*d) // result: (MULQconst [c * d] x) for { c := v.AuxInt @@ -9763,6 +9763,9 @@ func rewriteValueAMD64_OpAMD64MULQconst(v *Value, config *Config) bool { } d := v_0.AuxInt x := v_0.Args[0] + if !(is32Bit(c * d)) { + break + } v.reset(OpAMD64MULQconst) v.AuxInt = c * d v.AddArg(x) |