Use a heralded conversion to bool in inline-asm constraints.
llvm-svn: 131170
diff --git a/clang/lib/Sema/SemaStmt.cpp b/clang/lib/Sema/SemaStmt.cpp
index a60fcb7..60fcb10 100644
--- a/clang/lib/Sema/SemaStmt.cpp
+++ b/clang/lib/Sema/SemaStmt.cpp
@@ -2016,7 +2016,9 @@
if (InputDomain == AD_Int && OutputDomain == AD_Int &&
!isOperandMentioned(InputOpNo, Pieces) &&
InputExpr->isEvaluatable(Context)) {
- InputExpr = ImpCastExprToType(InputExpr, OutTy, CK_IntegralCast).take();
+ CastKind castKind =
+ (OutTy->isBooleanType() ? CK_IntegralToBoolean : CK_IntegralCast);
+ InputExpr = ImpCastExprToType(InputExpr, OutTy, castKind).take();
Exprs[InputOpNo] = InputExpr;
NS->setInputExpr(i, InputExpr);
continue;
diff --git a/clang/test/Sema/asm.c b/clang/test/Sema/asm.c
index 7f0f396..d8161c8 100644
--- a/clang/test/Sema/asm.c
+++ b/clang/test/Sema/asm.c
@@ -105,3 +105,11 @@
register int r asm ("cx");
register int rr asm ("rr_asm"); // expected-error{{unknown register name 'rr_asm' in asm}}
}
+
+// This is just an assert because of the boolean conversion.
+// Feel free to change the assembly to something sensible if it causes a problem.
+// rdar://problem/9414925
+void test11(void) {
+ _Bool b;
+ asm volatile ("movb %%gs:%P2,%b0" : "=q"(b) : "0"(0), "i"(5L));
+}