1 ; RUN: llc < %s -mtriple x86_64-apple-darwin | FileCheck %s 2 3 @a = thread_local global i32 4, align 4 4 5 define i32 @f2(i32 %p1, i32 %p2, i32 %p3, i32 %p4, i32 %p5) { 6 entry: 7 ; Parameters are in %edi, %esi, %edx, %ecx, %r8d, there is no need to save 8 ; these parameters except the one in %edi, before making the TLS call. 9 ; %edi is used to pass parameter to the TLS call. 10 ; CHECK-NOT: movl %r8d 11 ; CHECK-NOT: movl %ecx 12 ; CHECK-NOT: movl %edx 13 ; CHECK-NOT: movl %esi 14 ; CHECK: movq {{.*}}TLVP{{.*}}, %rdi 15 ; CHECK-NEXT: callq 16 ; CHECK-NEXT: movl (%rax), 17 ; CHECK-NOT: movl {{.*}}, %esi 18 ; CHECK-NOT: movl {{.*}}, %edx 19 ; CHECK-NOT: movl {{.*}}, %ecx 20 ; CHECK-NOT: movl {{.*}}, %r8d 21 ; CHECK: callq 22 %0 = load i32, i32* @a, align 4 23 %call = tail call i32 @f3(i32 %p1, i32 %p2, i32 %p3, i32 %p4, i32 %p5) 24 %add = add nsw i32 %call, %0 25 ret i32 %add 26 } 27 28 declare i32 @f3(i32, i32, i32, i32, i32) 29
