1*9880d681SAndroid Build Coastguard Worker; RUN: llc -O3 -disable-peephole -mtriple=x86_64-unknown-unknown < %s | FileCheck %s 2*9880d681SAndroid Build Coastguard Worker 3*9880d681SAndroid Build Coastguard Workertarget datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128" 4*9880d681SAndroid Build Coastguard Workertarget triple = "x86_64-unknown-unknown" 5*9880d681SAndroid Build Coastguard Worker 6*9880d681SAndroid Build Coastguard Worker; Stack reload folding tests. 7*9880d681SAndroid Build Coastguard Worker; 8*9880d681SAndroid Build Coastguard Worker; By including a nop call with sideeffects we can force a partial register spill of the 9*9880d681SAndroid Build Coastguard Worker; relevant registers and check that the reload is correctly folded into the instruction. 10*9880d681SAndroid Build Coastguard Worker 11*9880d681SAndroid Build Coastguard Worker;TODO stack_fold_bsf_i16 12*9880d681SAndroid Build Coastguard Workerdeclare i16 @llvm.cttz.i16(i16, i1) 13*9880d681SAndroid Build Coastguard Worker 14*9880d681SAndroid Build Coastguard Workerdefine i32 @stack_fold_bsf_i32(i32 %a0) { 15*9880d681SAndroid Build Coastguard Worker ;CHECK-LABEL: stack_fold_bsf_i32 16*9880d681SAndroid Build Coastguard Worker ;CHECK: bsfl {{-?[0-9]*}}(%rsp), %eax {{.*#+}} 4-byte Folded Reload 17*9880d681SAndroid Build Coastguard Worker %1 = tail call i64 asm sideeffect "nop", "=x,~{rax},~{rbx},~{rcx},~{rdx},~{rsi},~{rdi},~{rbp},~{r8},~{r9},~{r10},~{r11},~{r12},~{r13},~{r14},~{r15}"() 18*9880d681SAndroid Build Coastguard Worker %2 = call i32 @llvm.cttz.i32(i32 %a0, i1 -1) 19*9880d681SAndroid Build Coastguard Worker ret i32 %2 20*9880d681SAndroid Build Coastguard Worker} 21*9880d681SAndroid Build Coastguard Workerdeclare i32 @llvm.cttz.i32(i32, i1) 22*9880d681SAndroid Build Coastguard Worker 23*9880d681SAndroid Build Coastguard Workerdefine i64 @stack_fold_bsf_i64(i64 %a0) { 24*9880d681SAndroid Build Coastguard Worker ;CHECK-LABEL: stack_fold_bsf_i64 25*9880d681SAndroid Build Coastguard Worker ;CHECK: bsfq {{-?[0-9]*}}(%rsp), %rax {{.*#+}} 8-byte Folded Reload 26*9880d681SAndroid Build Coastguard Worker %1 = tail call i64 asm sideeffect "nop", "=x,~{rax},~{rbx},~{rcx},~{rdx},~{rsi},~{rdi},~{rbp},~{r8},~{r9},~{r10},~{r11},~{r12},~{r13},~{r14},~{r15}"() 27*9880d681SAndroid Build Coastguard Worker %2 = call i64 @llvm.cttz.i64(i64 %a0, i1 -1) 28*9880d681SAndroid Build Coastguard Worker ret i64 %2 29*9880d681SAndroid Build Coastguard Worker} 30*9880d681SAndroid Build Coastguard Workerdeclare i64 @llvm.cttz.i64(i64, i1) 31*9880d681SAndroid Build Coastguard Worker 32*9880d681SAndroid Build Coastguard Worker;TODO stack_fold_bsr_i16 33*9880d681SAndroid Build Coastguard Workerdeclare i16 @llvm.ctlz.i16(i16, i1) 34*9880d681SAndroid Build Coastguard Worker 35*9880d681SAndroid Build Coastguard Workerdefine i32 @stack_fold_bsr_i32(i32 %a0) { 36*9880d681SAndroid Build Coastguard Worker ;CHECK-LABEL: stack_fold_bsr_i32 37*9880d681SAndroid Build Coastguard Worker ;CHECK: bsrl {{-?[0-9]*}}(%rsp), %eax {{.*#+}} 4-byte Folded Reload 38*9880d681SAndroid Build Coastguard Worker %1 = tail call i64 asm sideeffect "nop", "=x,~{rax},~{rbx},~{rcx},~{rdx},~{rsi},~{rdi},~{rbp},~{r8},~{r9},~{r10},~{r11},~{r12},~{r13},~{r14},~{r15}"() 39*9880d681SAndroid Build Coastguard Worker %2 = call i32 @llvm.ctlz.i32(i32 %a0, i1 -1) 40*9880d681SAndroid Build Coastguard Worker ret i32 %2 41*9880d681SAndroid Build Coastguard Worker} 42*9880d681SAndroid Build Coastguard Workerdeclare i32 @llvm.ctlz.i32(i32, i1) 43*9880d681SAndroid Build Coastguard Worker 44*9880d681SAndroid Build Coastguard Workerdefine i64 @stack_fold_bsr_i64(i64 %a0) { 45*9880d681SAndroid Build Coastguard Worker ;CHECK-LABEL: stack_fold_bsr_i64 46*9880d681SAndroid Build Coastguard Worker ;CHECK: bsrq {{-?[0-9]*}}(%rsp), %rax {{.*#+}} 8-byte Folded Reload 47*9880d681SAndroid Build Coastguard Worker %1 = tail call i64 asm sideeffect "nop", "=x,~{rax},~{rbx},~{rcx},~{rdx},~{rsi},~{rdi},~{rbp},~{r8},~{r9},~{r10},~{r11},~{r12},~{r13},~{r14},~{r15}"() 48*9880d681SAndroid Build Coastguard Worker %2 = call i64 @llvm.ctlz.i64(i64 %a0, i1 -1) 49*9880d681SAndroid Build Coastguard Worker ret i64 %2 50*9880d681SAndroid Build Coastguard Worker} 51*9880d681SAndroid Build Coastguard Workerdeclare i64 @llvm.ctlz.i64(i64, i1) 52