768598bcc3
This casuses assertion failures targeting 32-bit x86:
lib/Target/X86/X86RegisterInfo.cpp:989:
virtual bool llvm::X86RegisterInfo::eliminateFrameIndex(MachineBasicBlock::iterator, int, unsigned int, RegScavenger *) const:
Assertion `(Is64Bit || FitsIn32Bits) && "Requesting 64-bit offset in 32-bit immediate!"' failed.
See comment on the PR.
> Fix 32-bit integer overflows in the X86 target frame layout when dealing
> with frames larger than 4gb. When this occurs, we'll scavenge a scratch
> register to be able to hold the correct stack offset for frame locals.
>
> This completes reapplying #84114.
>
> Fixes #48911
> Fixes #75944
> Fixes #87154
This reverts commit 0abb779161.
15 lines
364 B
LLVM
15 lines
364 B
LLVM
; RUN: llc < %s -mtriple=x86_64-windows-gnu | FileCheck %s
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define void @foo() unnamed_addr #0 {
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start:
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%b = alloca i64, align 8
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%c = alloca [4294967295 x i8], align 1
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ret void
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}
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attributes #0 = { nonlazybind uwtable "probe-stack"="probe_stack" "target-cpu"="x86-64" }
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; CHECK-LABEL: foo:
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; CHECK: movabsq $4294967304, %rax
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; CHECK-NEXT: callq probe_stack
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