[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; }
diff --git a/clang/test/Driver/types.c b/clang/test/Driver/types.c
new file mode 100644
index 0000000..03fe105
--- /dev/null
+++ b/clang/test/Driver/types.c
@@ -0,0 +1,18 @@
+// Check whether __int128_t and __uint128_t are supported.
+
+// RUN: not %clang -c --target=riscv32-unknown-linux-gnu -fsyntax-only %s \
+// RUN: 2>&1 | FileCheck %s
+
+// RUN: %clang -c --target=riscv32-unknown-linux-gnu -fsyntax-only %s \
+// RUN: -fno-force-enable-int128 -fforce-enable-int128
+
+// RUN: not %clang -c --target=riscv32-unknown-linux-gnu -fsyntax-only %s \
+// RUN: -fforce-enable-int128 -fno-force-enable-int128
+
+void a() {
+ __int128_t s;
+ __uint128_t t;
+}
+
+// CHECK: error: use of undeclared identifier '__int128_t'
+// CHECK: error: use of undeclared identifier '__uint128_t'
diff --git a/clang/test/Preprocessor/init.c b/clang/test/Preprocessor/init.c
index 708410e..2ed74dc 100644
--- a/clang/test/Preprocessor/init.c
+++ b/clang/test/Preprocessor/init.c
@@ -10007,6 +10007,9 @@
// RUN: | FileCheck -match-full-lines -check-prefix=RISCV32 %s
// RUN: %clang_cc1 -E -dM -ffreestanding -triple=riscv32-unknown-linux < /dev/null \
// RUN: | FileCheck -match-full-lines -check-prefixes=RISCV32,RISCV32-LINUX %s
+// RUN: %clang_cc1 -E -dM -ffreestanding -triple=riscv32 \
+// RUN: -fforce-enable-int128 < /dev/null | FileCheck -match-full-lines \
+// RUN: -check-prefixes=RISCV32,RISCV32-INT128 %s
// RISCV32: #define _ILP32 1
// RISCV32: #define __ATOMIC_ACQUIRE 2
// RISCV32: #define __ATOMIC_ACQ_REL 4
@@ -10136,6 +10139,7 @@
// RISCV32: #define __SIG_ATOMIC_WIDTH__ 32
// RISCV32: #define __SIZEOF_DOUBLE__ 8
// RISCV32: #define __SIZEOF_FLOAT__ 4
+// RISCV32-INT128: #define __SIZEOF_INT128__ 16
// RISCV32: #define __SIZEOF_INT__ 4
// RISCV32: #define __SIZEOF_LONG_DOUBLE__ 16
// RISCV32: #define __SIZEOF_LONG_LONG__ 8