2dcf051259
Record the call frame size on entry to each basic block. This is usually zero except when a basic block has been split in the middle of a call sequence. This simplifies PEI::replaceFrameIndices which previously had to visit basic blocks in a specific order and had special handling for unreachable blocks. More importantly it paves the way for an equally simple implementation of a backwards version of replaceFrameIndices, which is required to fully convert PrologEpilogInserter to backwards register scavenging, which is preferred because it does not rely on accurate kill flags. Differential Revision: https://reviews.llvm.org/D156113
33 lines
931 B
LLVM
33 lines
931 B
LLVM
; RUN: llc < %s -mcpu=cortex-a15 | FileCheck %s
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; RUN: llc < %s -mcpu=cortex-a15 -stop-after=finalize-isel -o %t.mir
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; RUN: llc %t.mir -mcpu=cortex-a15 -start-after=finalize-isel -o - | FileCheck %s
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; ModuleID = 'attri_16.c'
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target datalayout = "e-p:32:32:32-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:64:64-f32:32:32-f64:64:64-v64:64:64-v128:64:128-a0:0:64-n32-S64"
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target triple = "armv4t--linux-gnueabihf"
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%big_struct0 = type { [517 x i32] }
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%big_struct1 = type { [516 x i32] }
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;CHECK-LABEL: f:
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define void @f(ptr %p0, ptr %p1) {
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;CHECK: sub sp, sp, #8
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;CHECK: sub sp, sp, #2048
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;CHECK: bl callme0
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call void @callme0(ptr byval(%big_struct0) %p0)
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;CHECK: add sp, sp, #8
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;CHECK: add sp, sp, #2048
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;CHECK: sub sp, sp, #2048
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;CHECK: bl callme1
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call void @callme1(ptr byval(%big_struct1) %p1)
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;CHECK: add sp, sp, #2048
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ret void
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}
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declare void @callme0(ptr byval(%big_struct0))
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declare void @callme1(ptr byval(%big_struct1))
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