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1; RUN: llc -O0 -mtriple=i386-unknown-linux-gnu -relocation-model=pic < %s | FileCheck %s2 3; Unbind the ebx with GOT address in regcall calling convention, or the following4; case will failed in register allocation by no register can be used.5 6;#define REGCALL __attribute__((regcall))7;int REGCALL func (int i1, int i2, int i3, int i4, int i5);8;int (REGCALL *fptr) (int, int, int, int, int) = func;9;int test() {10; return fptr(1,2,3,4,5);11;}12 13@fptr = global ptr @__regcall3__func, align 414 15declare x86_regcallcc i32 @__regcall3__func(i32 inreg, i32 inreg, i32 inreg, i32 inreg, i32 inreg)16 17; Function Attrs: noinline nounwind optnone18define i32 @test() {19; CHECK-LABEL: test:20; CHECK: .L0$pb:21; CHECK-NEXT: popl %eax22; CHECK: .Ltmp0:23; CHECK-NEXT: addl $_GLOBAL_OFFSET_TABLE_+(.Ltmp0-.L0$pb), %eax24; CHECK-NEXT: movl fptr@GOT(%eax), %eax25; CHECK-NEXT: movl (%eax), %ebx26; CHECK-NEXT: movl $1, %eax27; CHECK-NEXT: movl $2, %ecx28; CHECK-NEXT: movl $3, %edx29; CHECK-NEXT: movl $4, %edi30; CHECK-NEXT: movl $5, %esi31; CHECK-NEXT: calll *%ebx32 33entry:34 %0 = load ptr, ptr @fptr, align 435 %call = call x86_regcallcc i32 %0(i32 inreg 1, i32 inreg 2, i32 inreg 3, i32 inreg 4, i32 inreg 5)36 ret i32 %call37}38