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[arm-fast-isel] Add support for fastcc.

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Without fastcc support, the caller just falls through to CallingConv::C
for fastcc, but callee still uses fastcc, this inconsistency of calling
convention is a problem, and fastcc support can fix it.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@162013 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Jush Lu
2012-08-16 05:15:53 +00:00
parent 9418f17652
commit 2ff4e9d5af
2 changed files with 72 additions and 3 deletions
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66
test/CodeGen/ARM/fast-isel-call.ll
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@@ -2,6 +2,8 @@
; RUN: llc < %s -O0 -fast-isel-abort -relocation-model=dynamic-no-pic -mtriple=thumbv7-apple-ios | FileCheck %s --check-prefix=THUMB
; RUN: llc < %s -O0 -fast-isel-abort -relocation-model=dynamic-no-pic -mtriple=armv7-apple-ios -arm-long-calls | FileCheck %s --check-prefix=ARM-LONG
; RUN: llc < %s -O0 -fast-isel-abort -relocation-model=dynamic-no-pic -mtriple=thumbv7-apple-ios -arm-long-calls | FileCheck %s --check-prefix=THUMB-LONG
; RUN: llc < %s -O0 -relocation-model=dynamic-no-pic -mtriple=armv7-apple-ios -mattr=-vfp2 | FileCheck %s --check-prefix=ARM-NOVFP
; RUN: llc < %s -O0 -relocation-model=dynamic-no-pic -mtriple=thumbv7-apple-ios -mattr=-vfp2 | FileCheck %s --check-prefix=THUMB-NOVFP
define i32 @t0(i1 zeroext %a) nounwind {
%1 = zext i1 %a to i32
@@ -221,3 +223,67 @@ entry:
}
declare i32 @CallVariadic(i32, ...)
; Test fastcc
define fastcc void @fast_callee(float %i) ssp {
entry:
; ARM: fast_callee
; ARM: vmov r0, s0
; THUMB: fast_callee
; THUMB: vmov r0, s0
; ARM-NOVFP: fast_callee
; ARM-NOVFP-NOT: s0
; THUMB-NOVFP: fast_callee
; THUMB-NOVFP-NOT: s0
call void @print(float %i)
ret void
}
define void @fast_caller() ssp {
entry:
; ARM: fast_caller
; ARM: vldr s0,
; THUMB: fast_caller
; THUMB: vldr s0,
; ARM-NOVFP: fast_caller
; ARM-NOVFP: movw r0, #13107
; ARM-NOVFP: movt r0, #16611
; THUMB-NOVFP: fast_caller
; THUMB-NOVFP: movw r0, #13107
; THUMB-NOVFP: movt r0, #16611
call fastcc void @fast_callee(float 0x401C666660000000)
ret void
}
define void @no_fast_callee(float %i) ssp {
entry:
; ARM: no_fast_callee
; ARM: vmov s0, r0
; THUMB: no_fast_callee
; THUMB: vmov s0, r0
; ARM-NOVFP: no_fast_callee
; ARM-NOVFP-NOT: s0
; THUMB-NOVFP: no_fast_callee
; THUMB-NOVFP-NOT: s0
call void @print(float %i)
ret void
}
define void @no_fast_caller() ssp {
entry:
; ARM: no_fast_caller
; ARM: vmov r0, s0
; THUMB: no_fast_caller
; THUMB: vmov r0, s0
; ARM-NOVFP: no_fast_caller
; ARM-NOVFP: movw r0, #13107
; ARM-NOVFP: movt r0, #16611
; THUMB-NOVFP: no_fast_caller
; THUMB-NOVFP: movw r0, #13107
; THUMB-NOVFP: movt r0, #16611
call void @no_fast_callee(float 0x401C666660000000)
ret void
}
declare void @print(float)