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; RUN: llc < %s -tailcallopt -mtriple=x86_64-linux-gnu | FileCheck %s
; Check the GHC call convention works (x86-64)
@base = external global i64 ; assigned to register: R13
@sp = external global i64 ; assigned to register: RBP
@hp = external global i64 ; assigned to register: R12
@r1 = external global i64 ; assigned to register: RBX
@r2 = external global i64 ; assigned to register: R14
@r3 = external global i64 ; assigned to register: RSI
@r4 = external global i64 ; assigned to register: RDI
@r5 = external global i64 ; assigned to register: R8
@r6 = external global i64 ; assigned to register: R9
@splim = external global i64 ; assigned to register: R15
@f1 = external global float ; assigned to register: XMM1
@f2 = external global float ; assigned to register: XMM2
@f3 = external global float ; assigned to register: XMM3
@f4 = external global float ; assigned to register: XMM4
@d1 = external global double ; assigned to register: XMM5
@d2 = external global double ; assigned to register: XMM6
define void @zap(i64 %a, i64 %b) nounwind {
entry:
; CHECK: movq %rdi, %r13
; CHECK-NEXT: movq %rsi, %rbp
; CHECK-NEXT: callq addtwo
%0 = call ghccc i64 @addtwo(i64 %a, i64 %b)
; CHECK: callq foo
call void @foo() nounwind
ret void
}
define ghccc i64 @addtwo(i64 %x, i64 %y) nounwind {
entry:
; CHECK: leaq (%r13,%rbp), %rax
%0 = add i64 %x, %y
; CHECK-NEXT: ret
ret i64 %0
}
define ghccc void @foo() nounwind {
entry:
; CHECK: movsd d2(%rip), %xmm6
; CHECK-NEXT: movsd d1(%rip), %xmm5
; CHECK-NEXT: movss f4(%rip), %xmm4
; CHECK-NEXT: movss f3(%rip), %xmm3
; CHECK-NEXT: movss f2(%rip), %xmm2
; CHECK-NEXT: movss f1(%rip), %xmm1
; CHECK-NEXT: movq splim(%rip), %r15
; CHECK-NEXT: movq r6(%rip), %r9
; CHECK-NEXT: movq r5(%rip), %r8
; CHECK-NEXT: movq r4(%rip), %rdi
; CHECK-NEXT: movq r3(%rip), %rsi
; CHECK-NEXT: movq r2(%rip), %r14
; CHECK-NEXT: movq r1(%rip), %rbx
; CHECK-NEXT: movq hp(%rip), %r12
; CHECK-NEXT: movq sp(%rip), %rbp
; CHECK-NEXT: movq base(%rip), %r13
%0 = load double, double* @d2
%1 = load double, double* @d1
%2 = load float, float* @f4
%3 = load float, float* @f3
%4 = load float, float* @f2
%5 = load float, float* @f1
%6 = load i64, i64* @splim
%7 = load i64, i64* @r6
%8 = load i64, i64* @r5
%9 = load i64, i64* @r4
%10 = load i64, i64* @r3
%11 = load i64, i64* @r2
%12 = load i64, i64* @r1
%13 = load i64, i64* @hp
%14 = load i64, i64* @sp
%15 = load i64, i64* @base
; CHECK: jmp bar
tail call ghccc void @bar( i64 %15, i64 %14, i64 %13, i64 %12, i64 %11,
i64 %10, i64 %9, i64 %8, i64 %7, i64 %6,
float %5, float %4, float %3, float %2, double %1,
double %0 ) nounwind
ret void
}
declare ghccc void @bar(i64, i64, i64, i64, i64, i64, i64, i64, i64, i64,
float, float, float, float, double, double)
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