50 lines
1.6 KiB
Diff
50 lines
1.6 KiB
Diff
Pull in r209489 from upstream clang trunk (by Akira Hatanaka):
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Fix a bug in xmmintrin.h.
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The last step of _mm_cvtps_pi16 should use _mm_packs_pi32, which is a function
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that reads two __m64 values and packs four 32-bit values into four 16-bit
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values.
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<rdar://problem/16873717>
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Pull in r209559 from upstream clang trunk (by Akira Hatanaka):
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Recommit r209532 with -ffreestanding.
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This is a test case for r209489.
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Introduced here: http://svnweb.freebsd.org/changeset/base/266674
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Index: tools/clang/lib/Headers/xmmintrin.h
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===================================================================
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--- tools/clang/lib/Headers/xmmintrin.h
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+++ tools/clang/lib/Headers/xmmintrin.h
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@@ -903,7 +903,7 @@ _mm_cvtps_pi16(__m128 __a)
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__a = _mm_movehl_ps(__a, __a);
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__c = _mm_cvtps_pi32(__a);
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- return _mm_packs_pi16(__b, __c);
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+ return _mm_packs_pi32(__b, __c);
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}
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static __inline__ __m64 __attribute__((__always_inline__, __nodebug__))
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Index: tools/clang/test/Headers/xmmintrin.c
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===================================================================
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--- tools/clang/test/Headers/xmmintrin.c
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+++ tools/clang/test/Headers/xmmintrin.c
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@@ -0,0 +1,13 @@
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+// RUN: %clang_cc1 %s -ffreestanding -triple x86_64-apple-macosx10.9.0 -emit-llvm -o - | FileCheck %s
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+
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+#include <xmmintrin.h>
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+
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+// Make sure the last step of _mm_cvtps_pi16 converts <4 x i32> to <4 x i16> by
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+// checking that clang emits PACKSSDW instead of PACKSSWB.
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+
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+// CHECK: define i64 @test_mm_cvtps_pi16
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+// CHECK: call x86_mmx @llvm.x86.mmx.packssdw
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+
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+__m64 test_mm_cvtps_pi16(__m128 a) {
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+ return _mm_cvtps_pi16(a);
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+}
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