llvm-6502/test/CodeGen/X86/2009-06-07-ExpandMMXBitcast.ll
Eli Friedman f10d3a7bcd Tweak the expansion code for BIT_CONVERT to generate better code
converting from an MMX vector to an i64.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@73024 91177308-0d34-0410-b5e6-96231b3b80d8
2009-06-07 09:41:57 +00:00

11 lines
329 B
LLVM

; RUN: llvm-as < %s | llc | grep movl | count 2
define i64 @a(i32 %a, i32 %b) nounwind readnone {
entry:
%0 = insertelement <2 x i32> undef, i32 %a, i32 0 ; <<2 x i32>> [#uses=1]
%1 = insertelement <2 x i32> %0, i32 %b, i32 1 ; <<2 x i32>> [#uses=1]
%conv = bitcast <2 x i32> %1 to i64 ; <i64> [#uses=1]
ret i64 %conv
}