| ; 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 | |
| } |