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1; RUN: llc -mtriple=x86_64-pc-linux-gnu < %s -o - | FileCheck %s2 3; Ensure that red zone usage occurs.4define signext i8 @testStackProbesOff() {5 %array = alloca [40096 x i8], align 166 ret i8 07 8; CHECK-LABEL: testStackProbesOff:9; CHECK: subq $39976, %rsp # imm = 0x9C2810}11 12; Ensure stack probes do not result in red zone usage.13define void @testStackProbesOn() "probe-stack"="__probestack" {14 %array = alloca [40096 x i8], align 1615 ret void16 17; CHECK-LABEL: testStackProbesOn:18; CHECK: movl $40104, %eax # imm = 0x9CA819; CHECK-NEXT: callq __probestack20; CHECK-NEXT: subq %rax, %rsp21}22