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"The original bug was a complaint that _mm_srli_si128 mis-compiled when passed

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a constant vector ("{0x123, 0x456}" syntax).  The fix is to simplify the
_mm_srli_si128 macro, and  move the "* 8" from the macro into the compiler
back-end.  I can't change the existing __builtins because so many people are
using them :-(."
Patch by Stuart Hastings!

llvm-svn: 56944
This commit is contained in:
Bill Wendling 2008-10-02 05:56:52 +00:00
parent 1fab10702e
commit 1c97db4090
2 changed files with 10 additions and 0 deletions
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6
include/llvm/IntrinsicsX86.td
View File

@ -371,6 +371,12 @@ let TargetPrefix = "x86" in { // All intrinsics start with "llvm.x86.".
def int_x86_sse2_psrl_dq : GCCBuiltin<"__builtin_ia32_psrldqi128">,
Intrinsic<[llvm_v2i64_ty, llvm_v2i64_ty,
llvm_i32_ty], [IntrNoMem]>;
def int_x86_sse2_psll_dq_bs : GCCBuiltin<"__builtin_ia32_pslldqi128_byteshift">,
Intrinsic<[llvm_v2i64_ty, llvm_v2i64_ty,
llvm_i32_ty], [IntrNoMem]>;
def int_x86_sse2_psrl_dq_bs : GCCBuiltin<"__builtin_ia32_psrldqi128_byteshift">,
Intrinsic<[llvm_v2i64_ty, llvm_v2i64_ty,
llvm_i32_ty], [IntrNoMem]>;
}
// Integer comparison ops

4
lib/Target/X86/X86InstrSSE.td
View File

@ -1969,6 +1969,10 @@ let Predicates = [HasSSE2] in {
(v2i64 (PSLLDQri VR128:$src1, (PSxLDQ_imm imm:$src2)))>;
def : Pat<(int_x86_sse2_psrl_dq VR128:$src1, imm:$src2),
(v2i64 (PSRLDQri VR128:$src1, (PSxLDQ_imm imm:$src2)))>;
def : Pat<(int_x86_sse2_psll_dq_bs VR128:$src1, imm:$src2),
(v2i64 (PSLLDQri VR128:$src1, imm:$src2))>;
def : Pat<(int_x86_sse2_psrl_dq_bs VR128:$src1, imm:$src2),
(v2i64 (PSRLDQri VR128:$src1, imm:$src2))>;
def : Pat<(v2f64 (X86fsrl VR128:$src1, i32immSExt8:$src2)),
(v2f64 (PSRLDQri VR128:$src1, (PSxLDQ_imm imm:$src2)))>;