de34a940ae
AMD64 ABI mandates caller to specify the number of used SSE registers when passing variable arguments. GCC also provides option -mskip-rax-setup to skip the setup of rax when SSE is disabled. This helps to reduce the code size, see pr23258. Reviewed By: nickdesaulniers Differential Revision: https://reviews.llvm.org/D112413
8 lines
304 B
C
8 lines
304 B
C
// RUN: %clang_cc1 -triple x86_64-unknown-unknown -emit-llvm %s -o - | FileCheck %s -check-prefix=NO-SKIP
|
|
// RUN: %clang_cc1 -triple x86_64-unknown-unknown -mskip-rax-setup -emit-llvm %s -o - | FileCheck %s -check-prefix=SKIP
|
|
|
|
void f() {}
|
|
|
|
// SKIP: !"SkipRaxSetup", i32 1}
|
|
// NO-SKIP-NOT: "SkipRaxSetup"
|