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https://github.com/c64scene-ar/llvm-6502.git
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52346e964f
Use the spill slot alignment as well as the local variable alignment to determine when the stack needs to be realigned. This works now that the ARM target can always realign the stack by using a base pointer. Still respect the ARMBaseRegisterInfo::canRealignStack() function vetoing a realigned stack. Don't use aligned spill code in that case. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@146997 91177308-0d34-0410-b5e6-96231b3b80d8
23 lines
773 B
LLVM
23 lines
773 B
LLVM
; RUN: llc < %s -mcpu=cortex-a8 | FileCheck %s
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target datalayout = "e-p:32:32:32-i1:8:32-i8:8:32-i16:16:32-i32:32:32-i64:32:64-f32:32:32-f64:32:64-v64:32:64-v128:32:128-a0:0:32-n32-S32"
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target triple = "thumbv7-apple-ios"
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; CHECK: f
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; This function is forced to spill a double.
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; Verify that the spill slot is properly aligned.
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;
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; The caller-saved r4 is used as a scratch register for stack realignment.
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; CHECK: push {r4, r7, lr}
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; CHECK: bic r4, r4, #7
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; CHECK: mov sp, r4
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define void @f(double* nocapture %p) nounwind ssp {
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entry:
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%0 = load double* %p, align 4
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tail call void asm sideeffect "", "~{d8},~{d9},~{d10},~{d11},~{d12},~{d13},~{d14},~{d15}"() nounwind
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tail call void @g() nounwind
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store double %0, double* %p, align 4
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ret void
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}
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declare void @g()
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