[RISCV] Enable __int128_t and __uint128_t through clang flag
Summary:
If the flag -fforce-enable-int128 is passed, it will enable support for __int128_t and __uint128_t types.
This flag can then be used to build compiler-rt for RISCV32.
Reviewers: asb, kito-cheng, apazos, efriedma
Reviewed By: asb, efriedma
Subscribers: shiva0217, efriedma, jfb, dschuff, sdardis, sbc100, jgravelle-google, aheejin, rbar, johnrusso, simoncook, jordy.potman.lists, sabuasal, niosHD, cfe-commits
Differential Revision: https://reviews.llvm.org/D43105
llvm-svn: 326045
diff --git a/clang/test/CodeGen/riscv32-abi.c b/clang/test/CodeGen/riscv32-abi.c
index ec98e3d..04eceb3 100644
--- a/clang/test/CodeGen/riscv32-abi.c
+++ b/clang/test/CodeGen/riscv32-abi.c
@@ -1,4 +1,6 @@
// RUN: %clang_cc1 -triple riscv32 -emit-llvm %s -o - | FileCheck %s
+// RUN: %clang_cc1 -triple riscv32 -emit-llvm -fforce-enable-int128 %s -o - \
+// RUN: | FileCheck %s -check-prefixes=CHECK,CHECK-FORCEINT128
#include <stddef.h>
#include <stdint.h>
@@ -24,6 +26,11 @@
// CHECK-LABEL: define i64 @f_scalar_4(i64 %x)
int64_t f_scalar_4(int64_t x) { return x; }
+#ifdef __SIZEOF_INT128__
+// CHECK-FORCEINT128-LABEL: define i128 @f_scalar_5(i128 %x)
+__int128_t f_scalar_5(__int128_t x) { return x; }
+#endif
+
// CHECK-LABEL: define float @f_fp_scalar_1(float %x)
float f_fp_scalar_1(float x) { return x; }