dyn_stackalloc.mir
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# NOTE: Assertions have been autogenerated by utils/update_mir_test_checks.py
# RUN: llc -O0 -mtriple=mipsel-linux-gnu -run-pass=legalizer -verify-machineinstrs %s -o - | FileCheck %s -check-prefixes=MIPS32
--- |
declare i32 @puts(i8*)
declare void @llvm.memset.p0i8.i32(i8*, i8, i32, i1)
define void @Print_c_N_times(i8 %c, i32 %N) {
entry:
%add = add i32 %N, 1
%vla = alloca i8, i32 %add, align 1
call void @llvm.memset.p0i8.i32(i8* align 1 %vla, i8 %c, i32 %N, i1 false)
%arrayidx = getelementptr inbounds i8, i8* %vla, i32 %N
store i8 0, i8* %arrayidx, align 1
%call = call i32 @puts(i8* %vla)
ret void
}
...
---
name: Print_c_N_times
alignment: 4
tracksRegLiveness: true
stack:
- { id: 0, name: vla, type: variable-sized, alignment: 1 }
body: |
bb.1.entry:
liveins: $a0, $a1
; MIPS32-LABEL: name: Print_c_N_times
; MIPS32: liveins: $a0, $a1
; MIPS32: [[COPY:%[0-9]+]]:_(s32) = COPY $a0
; MIPS32: [[COPY1:%[0-9]+]]:_(s32) = COPY $a1
; MIPS32: [[C:%[0-9]+]]:_(s32) = G_CONSTANT i32 1
; MIPS32: [[C1:%[0-9]+]]:_(s32) = G_CONSTANT i32 0
; MIPS32: [[ADD:%[0-9]+]]:_(s32) = G_ADD [[COPY1]], [[C]]
; MIPS32: [[MUL:%[0-9]+]]:_(s32) = G_MUL [[ADD]], [[C]]
; MIPS32: [[C2:%[0-9]+]]:_(s32) = G_CONSTANT i32 7
; MIPS32: [[ADD1:%[0-9]+]]:_(s32) = nuw G_ADD [[MUL]], [[C2]]
; MIPS32: [[C3:%[0-9]+]]:_(s32) = G_CONSTANT i32 -8
; MIPS32: [[AND:%[0-9]+]]:_(s32) = G_AND [[ADD1]], [[C3]]
; MIPS32: [[COPY2:%[0-9]+]]:_(p0) = COPY $sp
; MIPS32: [[PTRTOINT:%[0-9]+]]:_(s32) = G_PTRTOINT [[COPY2]](p0)
; MIPS32: [[SUB:%[0-9]+]]:_(s32) = G_SUB [[PTRTOINT]], [[AND]]
; MIPS32: [[INTTOPTR:%[0-9]+]]:_(p0) = G_INTTOPTR [[SUB]](s32)
; MIPS32: $sp = COPY [[INTTOPTR]](p0)
; MIPS32: [[COPY3:%[0-9]+]]:_(p0) = COPY [[INTTOPTR]](p0)
; MIPS32: ADJCALLSTACKDOWN 16, 0, implicit-def $sp, implicit $sp
; MIPS32: $a0 = COPY [[COPY3]](p0)
; MIPS32: [[COPY4:%[0-9]+]]:_(s32) = COPY [[COPY]](s32)
; MIPS32: $a1 = COPY [[COPY4]](s32)
; MIPS32: $a2 = COPY [[COPY1]](s32)
; MIPS32: JAL &memset, csr_o32, implicit-def $ra, implicit-def $sp, implicit $a0, implicit $a1, implicit $a2
; MIPS32: ADJCALLSTACKUP 16, 0, implicit-def $sp, implicit $sp
; MIPS32: [[GEP:%[0-9]+]]:_(p0) = G_PTR_ADD [[COPY3]], [[COPY1]](s32)
; MIPS32: [[COPY5:%[0-9]+]]:_(p0) = COPY [[GEP]](p0)
; MIPS32: [[COPY6:%[0-9]+]]:_(s32) = COPY [[C1]](s32)
; MIPS32: G_STORE [[COPY6]](s32), [[COPY5]](p0) :: (store 1 into %ir.arrayidx)
; MIPS32: ADJCALLSTACKDOWN 16, 0, implicit-def $sp, implicit $sp
; MIPS32: $a0 = COPY [[COPY3]](p0)
; MIPS32: JAL @puts, csr_o32, implicit-def $ra, implicit-def $sp, implicit $a0, implicit-def $v0
; MIPS32: ADJCALLSTACKUP 16, 0, implicit-def $sp, implicit $sp
; MIPS32: RetRA
%2:_(s32) = COPY $a0
%0:_(s8) = G_TRUNC %2(s32)
%1:_(s32) = COPY $a1
%3:_(s32) = G_CONSTANT i32 1
%13:_(s8) = G_CONSTANT i8 0
%4:_(s32) = G_ADD %1, %3
%5:_(s32) = G_MUL %4, %3
%6:_(s32) = G_CONSTANT i32 7
%7:_(s32) = nuw G_ADD %5, %6
%8:_(s32) = G_CONSTANT i32 -8
%9:_(s32) = G_AND %7, %8
%10:_(p0) = G_DYN_STACKALLOC %9(s32), 0
G_MEMSET %10(p0), %0(s8), %1(s32), 0 :: (store 1 into %ir.vla)
%11:_(p0) = G_PTR_ADD %10, %1(s32)
%12:_(p0) = COPY %11(p0)
G_STORE %13(s8), %12(p0) :: (store 1 into %ir.arrayidx)
ADJCALLSTACKDOWN 16, 0, implicit-def $sp, implicit $sp
$a0 = COPY %10(p0)
JAL @puts, csr_o32, implicit-def $ra, implicit-def $sp, implicit $a0, implicit-def $v0
ADJCALLSTACKUP 16, 0, implicit-def $sp, implicit $sp
RetRA
...