1 ; RUN: llc -mtriple=thumbv7k-apple-watchos2.0 -arm-atomic-cfg-tidy=0 -o - %s | FileCheck %s 2 3 @tls_var = thread_local global i32 0 4 5 ; r9 and r12 can be live across the asm, but those get clobbered by the TLS 6 ; access (in a different BB to order it). 7 define i32 @test_regs_preserved(i32* %ptr1, i32* %ptr2, i1 %tst1) { 8 ; CHECK-LABEL: test_regs_preserved: 9 ; CHECK: str {{.*}}, [sp 10 ; CHECK: mov {{.*}}, r12 11 entry: 12 call void asm sideeffect "", "~{r0},~{r1},~{r2},~{r3},~{r4},~{r5},~{r6},~{r7},~{r8},~{r10},~{r11},~{r13},~{lr}"() 13 br i1 %tst1, label %get_tls, label %done 14 15 get_tls: 16 %val = load i32, i32* @tls_var 17 br label %done 18 19 done: 20 %res = phi i32 [%val, %get_tls], [0, %entry] 21 store i32 42, i32* %ptr1 22 store i32 42, i32* %ptr2 23 ret i32 %res 24 } 25
