1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
|
; RUN: llc -O3 -disable-peephole -mtriple=x86_64-unknown-unknown -mattr=+bmi,+bmi2 < %s | FileCheck %s
target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128"
target triple = "x86_64-unknown-unknown"
; Stack reload folding tests.
;
; By including a nop call with sideeffects we can force a partial register spill of the
; relevant registers and check that the reload is correctly folded into the instruction.
define i32 @stack_fold_bzhi_u32(i32 %a0, i32 %a1) {
;CHECK-LABEL: stack_fold_bzhi_u32
;CHECK: bzhil %eax, {{-?[0-9]*}}(%rsp), %eax {{.*#+}} 4-byte Folded Reload
%1 = tail call i32 asm sideeffect "nop", "=x,~{rax},~{rbx},~{rcx},~{rdx},~{rsi},~{rdi},~{rbp},~{r8},~{r9},~{r10},~{r11},~{r12},~{r13},~{r14},~{r15}"()
%2 = tail call i32 @llvm.x86.bmi.bzhi.32(i32 %a0, i32 %a1)
ret i32 %2
}
declare i32 @llvm.x86.bmi.bzhi.32(i32, i32)
define i64 @stack_fold_bzhi_u64(i64 %a0, i64 %a1) {
;CHECK-LABEL: stack_fold_bzhi_u64
;CHECK: bzhiq %rax, {{-?[0-9]*}}(%rsp), %rax {{.*#+}} 8-byte Folded Reload
%1 = tail call i64 asm sideeffect "nop", "=x,~{rax},~{rbx},~{rcx},~{rdx},~{rsi},~{rdi},~{rbp},~{r8},~{r9},~{r10},~{r11},~{r12},~{r13},~{r14},~{r15}"()
%2 = tail call i64 @llvm.x86.bmi.bzhi.64(i64 %a0, i64 %a1)
ret i64 %2
}
declare i64 @llvm.x86.bmi.bzhi.64(i64, i64)
define i32 @stack_fold_pdep_u32(i32 %a0, i32 %a1) {
;CHECK-LABEL: stack_fold_pdep_u32
;CHECK: pdepl {{-?[0-9]*}}(%rsp), %eax, %eax {{.*#+}} 4-byte Folded Reload
%1 = tail call i32 asm sideeffect "nop", "=x,~{rax},~{rbx},~{rcx},~{rdx},~{rsi},~{rdi},~{rbp},~{r8},~{r9},~{r10},~{r11},~{r12},~{r13},~{r14},~{r15}"()
%2 = tail call i32 @llvm.x86.bmi.pdep.32(i32 %a0, i32 %a1)
ret i32 %2
}
declare i32 @llvm.x86.bmi.pdep.32(i32, i32)
define i64 @stack_fold_pdep_u64(i64 %a0, i64 %a1) {
;CHECK-LABEL: stack_fold_pdep_u64
;CHECK: pdepq {{-?[0-9]*}}(%rsp), %rax, %rax {{.*#+}} 8-byte Folded Reload
%1 = tail call i64 asm sideeffect "nop", "=x,~{rax},~{rbx},~{rcx},~{rdx},~{rsi},~{rdi},~{rbp},~{r8},~{r9},~{r10},~{r11},~{r12},~{r13},~{r14},~{r15}"()
%2 = tail call i64 @llvm.x86.bmi.pdep.64(i64 %a0, i64 %a1)
ret i64 %2
}
declare i64 @llvm.x86.bmi.pdep.64(i64, i64)
define i32 @stack_fold_pext_u32(i32 %a0, i32 %a1) {
;CHECK-LABEL: stack_fold_pext_u32
;CHECK: pextl {{-?[0-9]*}}(%rsp), %eax, %eax {{.*#+}} 4-byte Folded Reload
%1 = tail call i32 asm sideeffect "nop", "=x,~{rax},~{rbx},~{rcx},~{rdx},~{rsi},~{rdi},~{rbp},~{r8},~{r9},~{r10},~{r11},~{r12},~{r13},~{r14},~{r15}"()
%2 = tail call i32 @llvm.x86.bmi.pext.32(i32 %a0, i32 %a1)
ret i32 %2
}
declare i32 @llvm.x86.bmi.pext.32(i32, i32)
define i64 @stack_fold_pext_u64(i64 %a0, i64 %a1) {
;CHECK-LABEL: stack_fold_pext_u64
;CHECK: pextq {{-?[0-9]*}}(%rsp), %rax, %rax {{.*#+}} 8-byte Folded Reload
%1 = tail call i64 asm sideeffect "nop", "=x,~{rax},~{rbx},~{rcx},~{rdx},~{rsi},~{rdi},~{rbp},~{r8},~{r9},~{r10},~{r11},~{r12},~{r13},~{r14},~{r15}"()
%2 = tail call i64 @llvm.x86.bmi.pext.64(i64 %a0, i64 %a1)
ret i64 %2
}
declare i64 @llvm.x86.bmi.pext.64(i64, i64)
|
