78f5d9cdba
Implement emitPrologue/emitEpilogue methods, determine/spill/restore callee saved registers functionality with test. Also implement lowering of the DYNAMIC_STACKALLOC/STACKSAVE/STACKRESTORE stack operations with tests.
27 lines
753 B
LLVM
27 lines
753 B
LLVM
; RUN: llc -mtriple=xtensa -disable-block-placement -verify-machineinstrs < %s \
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; RUN: | FileCheck %s
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define ptr @test_simple_alloca(i32 %numelts) {
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; CHECK-LABEL: test_simple_alloca
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; CHECK: addi a8, a1, -16
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; CHECK: or a1, a8, a8
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; CHECK: s32i a15, a1, 0
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; CHECK: or a15, a1, a1
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; CHECK: addi a8, a2, 3
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; CHECK-NEXT: movi a9, -4
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; CHECK-NEXT: and a8, a8, a9
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; CHECK-NEXT: addi a8, a8, 31
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; CHECK-NEXT: movi a9, -32
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; CHECK-NEXT: and a8, a8, a9
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; CHECK-NEXT: sub a1, a1, a8
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; CHECK-NEXT: or a2, a1, a1
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; CHECK-NEXT: or a1, a15, a15
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; CHECK-NEXT: l32i a15, a1, 0
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; CHECK-NEXT: addi a8, a1, 16
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; CHECK-NEXT: or a1, a8, a8
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; CHECK-NEXT: ret
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%addr = alloca i8, i32 %numelts
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ret ptr %addr
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}
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