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.
25 lines
956 B
LLVM
25 lines
956 B
LLVM
; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py UTC_ARGS: --no_x86_scrub_sp --version 4
|
|
; RUN: llc -O0 -mtriple=x86_64 -verify-machineinstrs < %s | FileCheck %s --check-prefix=CHECK
|
|
%large = type [4294967295 x i8]
|
|
|
|
define void @foo() unnamed_addr #0 {
|
|
; CHECK-LABEL: foo:
|
|
; CHECK: # %bb.0:
|
|
; CHECK-NEXT: movabsq $8589934462, %rax # imm = 0x1FFFFFF7E
|
|
; CHECK-NEXT: subq %rax, %rsp
|
|
; CHECK-NEXT: .cfi_def_cfa_offset 8589934470
|
|
; CHECK-NEXT: movb $42, -129(%rsp)
|
|
; CHECK-NEXT: movb $43, -128(%rsp)
|
|
; CHECK-NEXT: movabsq $8589934462, %rax # imm = 0x1FFFFFF7E
|
|
; CHECK-NEXT: addq %rax, %rsp
|
|
; CHECK-NEXT: .cfi_def_cfa_offset 8
|
|
; CHECK-NEXT: retq
|
|
%1 = alloca %large, align 1
|
|
%2 = alloca %large, align 1
|
|
%3 = getelementptr inbounds %large, ptr %1, i64 0, i64 0
|
|
store i8 42, ptr %3, align 1
|
|
%4 = getelementptr inbounds %large, ptr %2, i64 0, i64 0
|
|
store i8 43, ptr %4, align 1
|
|
ret void
|
|
}
|