llvm-6502/insn-sched1-tc.ll at d95ea2da28901ca6e81645e444e528d66350d781 - llvm-6502 - Applefritter: Git

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Dale Johannesen c66cdf74a9 Enable tail calls on ARM by default, with some

basic tests.

This has been well tested on Darwin but not elsewhere.
It should work provided the linker correctly resolves
  B.W  <label in other function>
which it has not seen before, at least from llvm-based
compilers.  I'm leaving the arm-tail-calls switch in
until I see if there's any problems because of that;
it might need to be disabled for some environments.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@106299 91177308-0d34-0410-b5e6-96231b3b80d8

2010-06-18 19:00:18 +00:00

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 ; RUN: llc < %s -march=arm -mattr=+v6
 ; RUN: llc < %s -mtriple=arm-apple-darwin -mattr=+v6 |\
 ; RUN:   grep mov | count 2
 define i32 @test(i32 %x) {
         %tmp = trunc i32 %x to i16              ; <i16> [#uses=1]
         %tmp2 = tail call i32 @f( i32 1, i16 %tmp )             ; <i32> [#uses=1]
         ret i32 %tmp2
 }
 declare i32 @f(i32, i16)