78ec2e2ed5
Byval arguments which are passed partially in registers get stored into the local stack frame, but it is valid to tail-call them because the part which gets spilled is always re-loaded into registers before doing the tail-call, so it's OK for the spill area to be deallocated.
23 lines
602 B
LLVM
23 lines
602 B
LLVM
;PR15293: ARM codegen ice - expected larger existing stack allocation
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;RUN: llc -mtriple=arm-linux-gnueabihf < %s | FileCheck %s
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%struct4bytes = type { i32 }
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%struct20bytes = type { i32, i32, i32, i32, i32 }
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define void @foo(ptr byval(%struct4bytes) %p0, ; --> R0
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ptr byval(%struct20bytes) %p1 ; --> R1,R2,R3, [SP+0 .. SP+8)
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) {
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;CHECK: sub sp, sp, #16
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;CHECK: stm sp, {r0, r1, r2, r3}
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;CHECK: add r0, sp, #4
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;CHECK: add sp, sp, #16
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;CHECK: b useInt
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%1 = ptrtoint ptr %p1 to i32
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tail call void @useInt(i32 %1)
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ret void
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}
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declare void @useInt(i32)
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