[PowerPC] Fix use of FPSCR builtins in smmintrin.h

smmintrin.h uses __builtin_mffs, __builtin_mffsl, __builtin_mtfsf and __builtin_set_fpscr_rn. This patch replaces the uses with ppc prefix and implement the missing ones. This fixes issue llvm#64664.
ecnelises · Oct 9, 2023 · 2d62858 · 2d62858
1 parent 32f7197
commit 2d62858
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Showing 11 changed files with 99 additions and 31 deletions.
diff --git a/clang/include/clang/Basic/BuiltinsPPC.def b/clang/include/clang/Basic/BuiltinsPPC.def
@@ -151,9 +151,11 @@ TARGET_BUILTIN(__builtin_ppc_extract_exp, "Uid", "", "power9-vector")
 TARGET_BUILTIN(__builtin_ppc_extract_sig, "ULLid", "", "power9-vector")
 BUILTIN(__builtin_ppc_mtfsb0, "vUIi", "")
 BUILTIN(__builtin_ppc_mtfsb1, "vUIi", "")
+BUILTIN(__builtin_ppc_mffs, "d", "")
 TARGET_BUILTIN(__builtin_ppc_mffsl, "d", "", "isa-v30-instructions")
 BUILTIN(__builtin_ppc_mtfsf, "vUIiUi", "")
 BUILTIN(__builtin_ppc_mtfsfi, "vUIiUIi", "")
+BUILTIN(__builtin_ppc_set_fpscr_rn, "di", "")
 TARGET_BUILTIN(__builtin_ppc_insert_exp, "ddULLi", "", "power9-vector")
 BUILTIN(__builtin_ppc_fmsub, "dddd", "")
 BUILTIN(__builtin_ppc_fmsubs, "ffff", "")

diff --git a/clang/lib/Basic/Targets/PPC.cpp b/clang/lib/Basic/Targets/PPC.cpp
@@ -264,6 +264,10 @@ static void defineXLCompatMacros(MacroBuilder &Builder) {
   Builder.defineMacro("__builtin_minfe", "__builtin_ppc_minfe");
   Builder.defineMacro("__builtin_minfl", "__builtin_ppc_minfl");
   Builder.defineMacro("__builtin_minfs", "__builtin_ppc_minfs");
+  Builder.defineMacro("__builtin_mffs", "__builtin_ppc_mffs");
+  Builder.defineMacro("__builtin_mffsl", "__builtin_ppc_mffsl");
+  Builder.defineMacro("__builtin_mtfsf", "__builtin_ppc_mtfsf");
+  Builder.defineMacro("__builtin_set_fpscr_rn", "__builtin_ppc_set_fpscr_rn");
 }
 
 /// PPCTargetInfo::getTargetDefines - Return a set of the PowerPC-specific

diff --git a/clang/lib/CodeGen/CGBuiltin.cpp b/clang/lib/CodeGen/CGBuiltin.cpp
@@ -17258,6 +17258,11 @@ Value *CodeGenFunction::EmitPPCBuiltinExpr(unsigned BuiltinID,
     Value *Op1 = EmitScalarExpr(E->getArg(1));
     return Builder.CreateFDiv(Op0, Op1, "swdiv");
   }
+  case PPC::BI__builtin_ppc_set_fpscr_rn:
+    return Builder.CreateCall(CGM.getIntrinsic(Intrinsic::ppc_setrnd),
+                              {EmitScalarExpr(E->getArg(0))});
+  case PPC::BI__builtin_ppc_mffs:
+    return Builder.CreateCall(CGM.getIntrinsic(Intrinsic::ppc_readflm));
   }
 }
 

diff --git a/clang/lib/Headers/ppc_wrappers/smmintrin.h b/clang/lib/Headers/ppc_wrappers/smmintrin.h
@@ -14,7 +14,7 @@
 
 #ifndef NO_WARN_X86_INTRINSICS
 /* This header is distributed to simplify porting x86_64 code that
-   makes explicit use of Intel intrinsics to powerp64/powerpc64le.
+   makes explicit use of Intel intrinsics to powerpc64/powerpc64le.
 
    It is the user's responsibility to determine if the results are
    acceptable and make additional changes as necessary.
@@ -68,10 +68,10 @@ extern __inline __m128d
     __asm__("mffsce %0" : "=f"(__fpscr_save.__fr));
     __enables_save.__fpscr = __fpscr_save.__fpscr & 0xf8;
 #else
-    __fpscr_save.__fr = __builtin_mffs();
+    __fpscr_save.__fr = __builtin_ppc_mffs();
     __enables_save.__fpscr = __fpscr_save.__fpscr & 0xf8;
     __fpscr_save.__fpscr &= ~0xf8;
-    __builtin_mtfsf(0b00000011, __fpscr_save.__fr);
+    __builtin_ppc_mtfsf(0b00000011, __fpscr_save.__fr);
 #endif
     /* Insert an artificial "read/write" reference to the variable
        read below, to ensure the compiler does not schedule
@@ -83,10 +83,15 @@ extern __inline __m128d
 
   switch (__rounding) {
   case _MM_FROUND_TO_NEAREST_INT:
-    __fpscr_save.__fr = __builtin_mffsl();
+#ifdef _ARCH_PWR9
+    __fpscr_save.__fr = __builtin_ppc_mffsl();
+#else
+    __fpscr_save.__fr = __builtin_ppc_mffs();
+    __fpscr_save.__fpscr &= 0x70007f0ffL;
+#endif
     __attribute__((fallthrough));
   case _MM_FROUND_TO_NEAREST_INT | _MM_FROUND_NO_EXC:
-    __builtin_set_fpscr_rn(0b00);
+    __builtin_ppc_set_fpscr_rn(0b00);
     /* Insert an artificial "read/write" reference to the variable
        read below, to ensure the compiler does not schedule
        a read/use of the variable before the FPSCR is modified, above.
@@ -102,7 +107,7 @@ extern __inline __m128d
        This can be removed if and when GCC PR102783 is fixed.
      */
     __asm__("" : : "wa"(__r));
-    __builtin_set_fpscr_rn(__fpscr_save.__fpscr);
+    __builtin_ppc_set_fpscr_rn(__fpscr_save.__fpscr);
     break;
   case _MM_FROUND_TO_NEG_INF:
   case _MM_FROUND_TO_NEG_INF | _MM_FROUND_NO_EXC:
@@ -128,9 +133,14 @@ extern __inline __m128d
      */
     __asm__("" : : "wa"(__r));
     /* Restore enabled exceptions.  */
-    __fpscr_save.__fr = __builtin_mffsl();
+#ifdef _ARCH_PWR9
+    __fpscr_save.__fr = __builtin_ppc_mffsl();
+#else
+    __fpscr_save.__fr = __builtin_ppc_mffs();
+    __fpscr_save.__fpscr &= 0x70007f0ffL;
+#endif
     __fpscr_save.__fpscr |= __enables_save.__fpscr;
-    __builtin_mtfsf(0b00000011, __fpscr_save.__fr);
+    __builtin_ppc_mtfsf(0b00000011, __fpscr_save.__fr);
   }
   return (__m128d)__r;
 }
@@ -159,10 +169,10 @@ extern __inline __m128
     __asm__("mffsce %0" : "=f"(__fpscr_save.__fr));
     __enables_save.__fpscr = __fpscr_save.__fpscr & 0xf8;
 #else
-    __fpscr_save.__fr = __builtin_mffs();
+    __fpscr_save.__fr = __builtin_ppc_mffs();
     __enables_save.__fpscr = __fpscr_save.__fpscr & 0xf8;
     __fpscr_save.__fpscr &= ~0xf8;
-    __builtin_mtfsf(0b00000011, __fpscr_save.__fr);
+    __builtin_ppc_mtfsf(0b00000011, __fpscr_save.__fr);
 #endif
     /* Insert an artificial "read/write" reference to the variable
        read below, to ensure the compiler does not schedule
@@ -174,10 +184,15 @@ extern __inline __m128
 
   switch (__rounding) {
   case _MM_FROUND_TO_NEAREST_INT:
-    __fpscr_save.__fr = __builtin_mffsl();
+#ifdef _ARCH_PWR9
+    __fpscr_save.__fr = __builtin_ppc_mffsl();
+#else
+    __fpscr_save.__fr = __builtin_ppc_mffs();
+    __fpscr_save.__fpscr &= 0x70007f0ffL;
+#endif
     __attribute__((fallthrough));
   case _MM_FROUND_TO_NEAREST_INT | _MM_FROUND_NO_EXC:
-    __builtin_set_fpscr_rn(0b00);
+    __builtin_ppc_set_fpscr_rn(0b00);
     /* Insert an artificial "read/write" reference to the variable
        read below, to ensure the compiler does not schedule
        a read/use of the variable before the FPSCR is modified, above.
@@ -193,7 +208,7 @@ extern __inline __m128
        This can be removed if and when GCC PR102783 is fixed.
      */
     __asm__("" : : "wa"(__r));
-    __builtin_set_fpscr_rn(__fpscr_save.__fpscr);
+    __builtin_ppc_set_fpscr_rn(__fpscr_save.__fpscr);
     break;
   case _MM_FROUND_TO_NEG_INF:
   case _MM_FROUND_TO_NEG_INF | _MM_FROUND_NO_EXC:
@@ -219,9 +234,14 @@ extern __inline __m128
      */
     __asm__("" : : "wa"(__r));
     /* Restore enabled exceptions.  */
-    __fpscr_save.__fr = __builtin_mffsl();
+#ifdef _ARCH_PWR9
+    __fpscr_save.__fr = __builtin_ppc_mffsl();
+#else
+    __fpscr_save.__fr = __builtin_ppc_mffs();
+    __fpscr_save.__fpscr &= 0x70007f0ffL;
+#endif
     __fpscr_save.__fpscr |= __enables_save.__fpscr;
-    __builtin_mtfsf(0b00000011, __fpscr_save.__fr);
+    __builtin_ppc_mtfsf(0b00000011, __fpscr_save.__fr);
   }
   return (__m128)__r;
 }

diff --git a/clang/test/CodeGen/PowerPC/builtins-ppc.c b/clang/test/CodeGen/PowerPC/builtins-ppc.c
@@ -1,5 +1,8 @@
 // REQUIRES: powerpc-registered-target
-// RUN: %clang_cc1 -triple powerpc-unknown-unknown -emit-llvm %s -o - | FileCheck %s
+// RUN: %clang_cc1 -triple powerpc-unknown-unknown -emit-llvm %s -o - \
+// RUN:   | FileCheck %s
+// RUN: %clang_cc1 -triple powerpc-unknown-unknown -emit-llvm %s -o - \
+// RUN:   -target-cpu pwr9 | FileCheck %s --check-prefixes=P9,CHECK
 
 void test_eh_return_data_regno()
 {
@@ -26,14 +29,20 @@ void test_builtin_ppc_setrnd() {
 
   // CHECK: call double @llvm.ppc.setrnd(i32 %2)
   res = __builtin_setrnd(x);
+
+  // CHECK: call double @llvm.ppc.setrnd(i32 %4)
+  res = __builtin_ppc_set_fpscr_rn(x);
 }
 
 void test_builtin_ppc_flm() {
   volatile double res;
   // CHECK: call double @llvm.ppc.readflm()
   res = __builtin_readflm();
 
-  // CHECK: call double @llvm.ppc.setflm(double %1)
+  // CHECK: call double @llvm.ppc.readflm()
+  res = __builtin_ppc_mffs();
+
+  // CHECK: call double @llvm.ppc.setflm(double %2)
   res = __builtin_setflm(res);
 
 #ifdef _ARCH_PWR9

diff --git a/clang/test/CodeGen/PowerPC/ppc-emmintrin.c b/clang/test/CodeGen/PowerPC/ppc-emmintrin.c
@@ -8,6 +8,11 @@
 // RUN: %clang -S -emit-llvm -target powerpc64le-unknown-linux-gnu -mcpu=pwr10 -ffreestanding -DNO_WARN_X86_INTRINSICS %s \
 // RUN:   -ffp-contract=off -fno-discard-value-names -mllvm -disable-llvm-optzns -o - | llvm-cxxfilt -n | FileCheck %s --check-prefixes=CHECK-P10
 
+// RUN: %clang -x c++ -S -emit-llvm -target powerpc64le-unknown-linux-gnu -mcpu=pwr8 -ffreestanding -DNO_WARN_X86_INTRINSICS %s \
+// RUN:   -ffp-contract=off -fno-discard-value-names -mllvm -disable-llvm-optzns -fsyntax-only
+// RUN: %clang -x c++ -S -emit-llvm -target powerpc64le-unknown-linux-gnu -mcpu=pwr10 -ffreestanding -DNO_WARN_X86_INTRINSICS %s \
+// RUN:   -ffp-contract=off -fno-discard-value-names -mllvm -disable-llvm-optzns -fsyntax-only
+
 // RUN: %clang -S -emit-llvm -target powerpc64-ibm-aix -mcpu=pwr8 -ffreestanding -DNO_WARN_X86_INTRINSICS %s \
 // RUN:   -ffp-contract=off -fno-discard-value-names -mllvm -disable-llvm-optzns -o - | llvm-cxxfilt -n | FileCheck %s --check-prefixes=CHECK,CHECK-BE
 // RUN: %clang -S -emit-llvm -target powerpc64-ibm-aix -mcpu=pwr10 -ffreestanding -DNO_WARN_X86_INTRINSICS %s \

diff --git a/clang/test/CodeGen/PowerPC/ppc-mmintrin.c b/clang/test/CodeGen/PowerPC/ppc-mmintrin.c
@@ -9,6 +9,11 @@
 // RUN: %clang -S -emit-llvm -target powerpc64le-unknown-linux-gnu -mcpu=pwr9 -DNO_WARN_X86_INTRINSICS %s \
 // RUN:   -fno-discard-value-names -mllvm -disable-llvm-optzns -o - | llvm-cxxfilt -n| FileCheck %s --check-prefixes=CHECK-P9,CHECK,CHECK-LE
 
+// RUN: %clang -x c++ -S -emit-llvm -target powerpc64le-unknown-linux-gnu -mcpu=pwr8 -DNO_WARN_X86_INTRINSICS %s \
+// RUN:   -fno-discard-value-names -mllvm -disable-llvm-optzns -fsyntax-only
+// RUN: %clang -x c++ -S -emit-llvm -target powerpc64le-unknown-linux-gnu -mcpu=pwr9 -DNO_WARN_X86_INTRINSICS %s \
+// RUN:   -fno-discard-value-names -mllvm -disable-llvm-optzns -fsyntax-only
+
 // RUN: %clang -S -emit-llvm -target powerpc64-unknown-freebsd13.0 -mcpu=pwr8 -DNO_WARN_X86_INTRINSICS %s \
 // RUN:   -fno-discard-value-names -mllvm -disable-llvm-optzns -o - | llvm-cxxfilt -n | FileCheck %s --check-prefixes=CHECK-P8,CHECK,CHECK-BE
 // RUN: %clang -S -emit-llvm -target powerpc64le-unknown-freebsd13.0 -mcpu=pwr8 -DNO_WARN_X86_INTRINSICS %s \

diff --git a/clang/test/CodeGen/PowerPC/ppc-pmmintrin.c b/clang/test/CodeGen/PowerPC/ppc-pmmintrin.c
@@ -13,6 +13,9 @@
 // RUN: %clang -S -emit-llvm -target powerpc64-ibm-aix -mcpu=pwr8 -DNO_MM_MALLOC -ffreestanding -DNO_WARN_X86_INTRINSICS %s \
 // RUN:   -fno-discard-value-names -mllvm -disable-llvm-optzns -o - | llvm-cxxfilt -n | FileCheck %s
 
+// RUN: %clang -x c++ -S -emit-llvm -target powerpc64le-gnu-linux -mcpu=pwr8 -DNO_MM_MALLOC -ffreestanding -DNO_WARN_X86_INTRINSICS %s \
+// RUN:   -fno-discard-value-names -mllvm -disable-llvm-optzns -fsyntax-only
+
 #include <pmmintrin.h>
 
 __m128d resd, md1, md2;

diff --git a/clang/test/CodeGen/PowerPC/ppc-smmintrin.c b/clang/test/CodeGen/PowerPC/ppc-smmintrin.c
@@ -15,6 +15,11 @@
 // RUN: %clang -S -emit-llvm -target powerpc64-unknown-linux-gnu -mcpu=pwr10 -ffreestanding -DNO_WARN_X86_INTRINSICS %s \
 // RUN:   -fno-discard-value-names -mllvm -disable-llvm-optzns -o - | llvm-cxxfilt -n | FileCheck %s --check-prefix=P10
 
+// RUN: %clang -x c++ -S -emit-llvm -target powerpc64le-unknown-linux-gnu -mcpu=pwr8 -ffreestanding -DNO_WARN_X86_INTRINSICS %s \
+// RUN:   -fno-discard-value-names -mllvm -disable-llvm-optzns -fsyntax-only
+// RUN: %clang -x c++ -S -emit-llvm -target powerpc64le-unknown-linux-gnu -mcpu=pwr10 -ffreestanding -DNO_WARN_X86_INTRINSICS %s \
+// RUN:   -fno-discard-value-names -mllvm -disable-llvm-optzns -fsyntax-only
+
 // RUN: %clang -S -emit-llvm -target powerpc64le-unknown-freebsd13.0 -mcpu=pwr8 -ffreestanding -DNO_WARN_X86_INTRINSICS %s \
 // RUN:   -fno-discard-value-names -mllvm -disable-llvm-optzns -o - | llvm-cxxfilt -n | FileCheck %s
 // RUN: %clang -S -emit-llvm -target powerpc64-unknown-freebsd13.0 -mcpu=pwr8 -ffreestanding -DNO_WARN_X86_INTRINSICS %s \
@@ -239,44 +244,48 @@ test_round() {
 // CHECK-LABEL: @test_round
 
 // CHECK-LABEL: define available_externally <4 x float> @_mm_round_ps(<4 x float> noundef %{{[0-9a-zA-Z_.]+}}, i32 noundef signext %{{[0-9a-zA-Z_.]+}})
-// CHECK: call signext i32 @__builtin_mffs()
-// CHECK: call signext i32 @__builtin_mtfsf(i32 noundef signext 3, double noundef %{{[0-9a-zA-Z_.]+}})
+// CHECK: call double @llvm.ppc.readflm()
+// CHECK: call void @llvm.ppc.mtfsf(i32 3, double %{{[0-9a-zA-Z_.]+}})
 // CHECK: %{{[0-9a-zA-Z_.]+}} = call <4 x float> asm "", "=^wa,0"
-// CHECK: call signext i32 @__builtin_mffsl()
-// CHECK: call signext i32 @__builtin_set_fpscr_rn(i32 noundef signext 0)
+// CHECK: call double @llvm.ppc.readflm()
+// P10: call double @llvm.ppc.mffsl()
+// CHECK: call double @llvm.ppc.setrnd(i32 0)
 // CHECK: %{{[0-9a-zA-Z_.]+}} = call <4 x float> asm "", "=^wa,0"
 // CHECK: call <4 x float> @vec_rint(float vector[4])
 // CHECK: call void asm sideeffect "", "^wa"
-// CHECK: call signext i32 @__builtin_set_fpscr_rn(i64 noundef %{{[0-9a-zA-Z_.]+}})
+// CHECK: call double @llvm.ppc.setrnd(i32 %{{[0-9a-zA-Z_.]+}})
 // CHECK: call <4 x float> @vec_floor(float vector[4])
 // CHECK: call <4 x float> @vec_ceil(float vector[4])
 // CHECK: call <4 x float> @vec_trunc(float vector[4])
 // CHECK: call <4 x float> @vec_rint(float vector[4])
 // CHECK: call void asm sideeffect "", "^wa"
-// CHECK: call signext i32 @__builtin_mffsl()
-// CHECK: call signext i32 @__builtin_mtfsf(i32 noundef signext 3, double noundef %{{[0-9a-zA-Z_.]+}})
+// CHECK: call double @llvm.ppc.readflm()
+// P10: call double @llvm.ppc.mffsl()
+// CHECK: call void @llvm.ppc.mtfsf(i32 3, double %{{[0-9a-zA-Z_.]+}})
 
 // CHECK-LABEL: define available_externally <4 x float> @_mm_round_ss(<4 x float> noundef %{{[0-9a-zA-Z_.]+}}, <4 x float> noundef %{{[0-9a-zA-Z_.]+}}, i32 noundef signext %{{[0-9a-zA-Z_.]+}})
 // CHECK: call <4 x float> @_mm_round_ps(<4 x float> noundef %{{[0-9a-zA-Z_.]+}}, i32 noundef signext %{{[0-9a-zA-Z_.]+}})
 // CHECK: extractelement <4 x float> %{{[0-9a-zA-Z_.]+}}, i32 0
 
 // CHECK-LABEL: define available_externally <2 x double> @_mm_round_pd(<2 x double> noundef %{{[0-9a-zA-Z_.]+}}, i32 noundef signext %{{[0-9a-zA-Z_.]+}})
-// CHECK: call signext i32 @__builtin_mffs()
-// CHECK: call signext i32 @__builtin_mtfsf(i32 noundef signext 3, double noundef %{{[0-9a-zA-Z_.]+}})
+// CHECK: call double @llvm.ppc.readflm()
+// CHECK: call void @llvm.ppc.mtfsf(i32 3, double %{{[0-9a-zA-Z_.]+}})
 // CHECK: %{{[0-9a-zA-Z_.]+}} = call <2 x double> asm "", "=^wa,0"
-// CHECK: call signext i32 @__builtin_mffsl()
-// CHECK: call signext i32 @__builtin_set_fpscr_rn(i32 noundef signext 0)
+// CHECK: call double @llvm.ppc.readflm()
+// P10: call double @llvm.ppc.mffsl()
+// CHECK: call double @llvm.ppc.setrnd(i32 0)
 // CHECK: %{{[0-9a-zA-Z_.]+}} = call <2 x double> asm "", "=^wa,0"
 // CHECK: call <2 x double> @vec_rint(double vector[2])
 // CHECK: call void asm sideeffect "", "^wa"
-// CHECK: call signext i32 @__builtin_set_fpscr_rn(i64 noundef %{{[0-9a-zA-Z_.]+}})
+// CHECK: call double @llvm.ppc.setrnd(i32 %{{[0-9a-zA-Z_.]+}})
 // CHECK: call <2 x double> @vec_floor(double vector[2])
 // CHECK: call <2 x double> @vec_ceil(double vector[2])
 // CHECK: call <2 x double> @vec_trunc(double vector[2])
 // CHECK: call <2 x double> @vec_rint(double vector[2])
 // CHECK: call void asm sideeffect "", "^wa"
-// CHECK: call signext i32 @__builtin_mffsl()
-// CHECK: call signext i32 @__builtin_mtfsf(i32 noundef signext 3, double noundef %{{[0-9a-zA-Z_.]+}})
+// CHECK: call double @llvm.ppc.readflm()
+// P10: call double @llvm.ppc.mffsl()
+// CHECK: call void @llvm.ppc.mtfsf(i32 3, double %{{[0-9a-zA-Z_.]+}})
 
 // CHECK-LABEL: define available_externally <2 x double> @_mm_round_sd(<2 x double> noundef %{{[0-9a-zA-Z_.]+}}, <2 x double> noundef %{{[0-9a-zA-Z_.]+}}, i32 noundef signext %{{[0-9a-zA-Z_.]+}})
 // CHECK: call <2 x double> @_mm_round_pd(<2 x double> noundef %{{[0-9a-zA-Z_.]+}}, i32 noundef signext %{{[0-9a-zA-Z_.]+}})

diff --git a/clang/test/CodeGen/PowerPC/ppc-tmmintrin.c b/clang/test/CodeGen/PowerPC/ppc-tmmintrin.c
@@ -13,6 +13,9 @@
 // RUN: %clang -S -emit-llvm -target powerpc64-ibm-aix -mcpu=pwr8 -ffreestanding -DNO_WARN_X86_INTRINSICS %s \
 // RUN:   -fno-discard-value-names -mllvm -disable-llvm-optzns -o - | llvm-cxxfilt -n | FileCheck %s --check-prefixes=CHECK,CHECK-BE
 
+// RUN: %clang -x c++ -S -emit-llvm -target powerpc64le-gnu-linux -mcpu=pwr8 -ffreestanding -DNO_WARN_X86_INTRINSICS %s \
+// RUN:   -fno-discard-value-names -mllvm -disable-llvm-optzns -fsyntax-only
+
 #include <tmmintrin.h>
 
 __m64 res, m1, m2;

diff --git a/clang/test/CodeGen/PowerPC/ppc-x86gprintrin.c b/clang/test/CodeGen/PowerPC/ppc-x86gprintrin.c
@@ -12,6 +12,9 @@
 // RUN: %clang -S -emit-llvm -target powerpc64-ibm-aix -mcpu=pwr7 -ffreestanding -DNO_WARN_X86_INTRINSICS %s \
 // RUN:   -fno-discard-value-names -mllvm -disable-llvm-optzns -o - | llvm-cxxfilt -n | FileCheck %s
 
+// RUN: %clang -x c++ -S -emit-llvm -target powerpc64le-unknown-linux-gnu -mcpu=pwr7 -ffreestanding -DNO_WARN_X86_INTRINSICS %s \
+// RUN:   -fno-discard-value-names -mllvm -disable-llvm-optzns -fsyntax-only
+
 #include <x86gprintrin.h>
 
 unsigned short us;