| ; RUN: llc -mtriple=i386-pc-linux-gnu < %s -o - | FileCheck --check-prefix=X86-LINUX %s |
| ; RUN: llc -mtriple=x86_64-pc-linux-gnu < %s -o - | FileCheck --check-prefix=X64-LINUX %s |
| ; RUN: llc -mtriple=x86_64-pc-linux-gnu -code-model=large < %s -o - | FileCheck --check-prefix=X64-LINUX-LARGE %s |
| |
| declare void @use([40096 x i8]*) |
| |
| ; Ensure calls to __probestack occur for large stack frames |
| define void @test() "probe-stack"="__probestack" { |
| %array = alloca [40096 x i8], align 16 |
| call void @use([40096 x i8]* %array) |
| ret void |
| |
| ; X86-LINUX-LABEL: test: |
| ; X86-LINUX: movl $40124, %eax # imm = 0x9CBC |
| ; X86-LINUX-NEXT: calll __probestack |
| ; X86-LINUX-NEXT: subl %eax, %esp |
| |
| ; X64-LINUX-LABEL: test: |
| ; X64-LINUX: movl $40104, %eax # imm = 0x9CA8 |
| ; X64-LINUX-NEXT: callq __probestack |
| ; X64-LINUX-NEXT: subq %rax, %rsp |
| |
| ; X64-LINUX-LARGE-LABEL: test: |
| ; X64-LINUX-LARGE: movl $40104, %eax # imm = 0x9CA8 |
| ; X64-LINUX-LARGE-NEXT: movabsq $__probestack, %r11 |
| ; X64-LINUX-LARGE-NEXT: callq *%r11 |
| ; X64-LINUX-LARGE-NEXT: subq %rax, %rsp |
| |
| } |
