1 ; RUN: llc < %s -mtriple=x86_64-linux-gnux32 | FileCheck %s 2 ; RUN: llc < %s -mtriple=x86_64-linux-gnux32 -fast-isel | FileCheck %s 3 4 ; Test calling function pointer passed in struct 5 6 ; The function argument `h' in 7 8 ; struct foo { 9 ; void (*f) (void); 10 ; int i; 11 ; }; 12 ; void 13 ; bar (struct foo h) 14 ; { 15 ; h.f (); 16 ; } 17 18 ; is passed in the 64-bit %rdi register. The `f' field is in the lower 32 19 ; bits of %rdi register and the `i' field is in the upper 32 bits of %rdi 20 ; register. We need to zero-extend %edi to %rdi before branching via %rdi. 21 22 define void @bar(i64 %h.coerce) nounwind { 23 entry: 24 %h.sroa.0.0.extract.trunc = trunc i64 %h.coerce to i32 25 %0 = inttoptr i32 %h.sroa.0.0.extract.trunc to void ()* 26 ; CHECK: movl %edi, %e[[REG:.*]] 27 tail call void %0() nounwind 28 ; CHECK: jmpq *%r[[REG]] 29 ret void 30 } 31
