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[arm-fast-isel] Add support for vararg function calls.

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@160500 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Jush Lu
2012-07-19 09:49:00 +00:00
parent 71d94f8055
commit ee649839a2
3 changed files with 84 additions and 32 deletions
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43
test/CodeGen/ARM/fast-isel-call.ll
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@@ -178,3 +178,46 @@ entry:
%tmp1 = udiv i32 %a, %b ; <i32> [#uses=1]
ret i32 %tmp1
}
define i32 @VarArg() nounwind {
entry:
%i = alloca i32, align 4
%j = alloca i32, align 4
%k = alloca i32, align 4
%m = alloca i32, align 4
%n = alloca i32, align 4
%tmp = alloca i32, align 4
%0 = load i32* %i, align 4
%1 = load i32* %j, align 4
%2 = load i32* %k, align 4
%3 = load i32* %m, align 4
%4 = load i32* %n, align 4
; ARM: VarArg
; ARM: mov r7, sp
; ARM: movw r0, #5
; ARM: ldr r1, [r7, #-4]
; ARM: ldr r2, [r7, #-8]
; ARM: ldr r3, [r7, #-12]
; ARM: ldr r9, [sp, #16]
; ARM: ldr r12, [sp, #12]
; ARM: str r9, [sp]
; ARM: str r12, [sp, #4]
; ARM: bl _CallVariadic
; THUMB: mov r7, sp
; THUMB: movs r0, #5
; THUMB: movt r0, #0
; THUMB: ldr r1, [sp, #28]
; THUMB: ldr r2, [sp, #24]
; THUMB: ldr r3, [sp, #20]
; THUMB: ldr.w r9, [sp, #16]
; THUMB: ldr.w r12, [sp, #12]
; THUMB: str.w r9, [sp]
; THUMB: str.w r12, [sp, #4]
; THUMB: bl _CallVariadic
%call = call i32 (i32, ...)* @CallVariadic(i32 5, i32 %0, i32 %1, i32 %2, i32 %3, i32 %4)
store i32 %call, i32* %tmp, align 4
%5 = load i32* %tmp, align 4
ret i32 %5
}
declare i32 @CallVariadic(i32, ...)