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llvm-mirror/test/CodeGen/X86/win64-stackprobe-overflow.ll
Martin Storsjö 0523b5daa7 [X86] [Win64] Avoid truncating large (> 32 bit) stack allocations
This fixes PR44129, which was broken in a7adc3185b (in 7.0.0
and newer).

Differential Revision: https://reviews.llvm.org/D70741
2019-11-27 10:44:42 +02:00

15 lines
364 B
LLVM

; RUN: llc < %s -mtriple=x86_64-windows-gnu | FileCheck %s
define void @foo() unnamed_addr #0 {
start:
%b = alloca i64, align 8
%c = alloca [4294967295 x i8], align 1
ret void
}
attributes #0 = { nonlazybind uwtable "probe-stack"="probe_stack" "target-cpu"="x86-64" }
; CHECK-LABEL: foo:
; CHECK: movabsq $4294967304, %rax
; CHECK-NEXT: callq probe_stack