[HWASan] Disable GlobalISel/FastISel w/ HWASan.
Bug: 159343917
Test: See upstream testing at https://reviews.llvm.org/D82249
Change-Id: Ib644a857caa048d7fc3dd5e5f20553e0b4a47d43
diff --git a/cc/sanitize.go b/cc/sanitize.go
index 371f270..463a02a 100644
--- a/cc/sanitize.go
+++ b/cc/sanitize.go
@@ -48,6 +48,10 @@
// higher number of "optimized out" stack variables.
// b/112437883.
"-mllvm", "-instcombine-lower-dbg-declare=0",
+ // TODO(b/159343917): HWASan and GlobalISel don't play nicely, and
+ // GlobalISel is the default at -O0 on aarch64.
+ "-mllvm", "--aarch64-enable-global-isel-at-O=-1",
+ "-mllvm", "-fast-isel=false",
}
cfiCflags = []string{"-flto", "-fsanitize-cfi-cross-dso",