Fix elimination of conditional expressions in registerizeHarder.

Previously, attempts to eliminate a side-effect-free conditional
expression would corrupt internal block state, because the sub-nodes
belong to a different block than the one containing the expression.
This fixes the problem by not splitting side-effect free conditionals
across multiple blocks.

1 files changed, 5 insertions, 0 deletions

diff --git a/tools/test-js-optimizer-asm-regs-harder-output.js b/tools/test-js-optimizer-asm-regs-harder-output.js
index e1df42cb..c3b326f6 100644
--- a/tools/test-js-optimizer-asm-regs-harder-output.js
+++ b/tools/test-js-optimizer-asm-regs-harder-output.js
@@ -129,4 +129,9 @@ function linkedVars() {
  }
  return i2 + i1;
 }
+function deadCondExpr(i2) {
+ i2 = i2 | 0;
+ var i1 = 0;
+ return i1 | 0;
+}