Closed
Description
Command line options:
clang -target loongarch64 -O3 -S -o - align.c -mstrict-alignMinimal reproduction:
#include <stdio.h>
extern void outs(char *str);
void test(void)
{
char msgbuf[64];
sprintf(msgbuf, "preemption imbalance ");
outs(msgbuf);
}LoongArch machine code (clang 20.0.0git):
.text
.file "align.c"
.globl test # -- Begin function test
.p2align 5
.type test,@function
test: # @test
# %bb.0: # %entry
addi.d $sp, $sp, -80
st.d $ra, $sp, 72 # 8-byte Folded Spill
pcalau12i $a0, %pc_hi20(.L.str)
addi.d $a0, $a0, %pc_lo12(.L.str)
ld.b $a1, $a0, 21
ld.bu $a2, $a0, 20
slli.d $a1, $a1, 8
or $a1, $a1, $a2
st.h $a1, $sp, 28
ld.bu $a1, $a0, 17
ld.bu $a2, $a0, 16
ld.bu $a3, $a0, 18
ld.b $a4, $a0, 19
slli.d $a1, $a1, 8
or $a1, $a1, $a2
slli.d $a2, $a3, 16
slli.d $a3, $a4, 24
or $a2, $a3, $a2
or $a1, $a2, $a1
st.w $a1, $sp, 24
ld.bu $a1, $a0, 9
ld.bu $a2, $a0, 8
ld.bu $a3, $a0, 10
ld.bu $a4, $a0, 11
slli.d $a1, $a1, 8
or $a1, $a1, $a2
slli.d $a2, $a3, 16
slli.d $a3, $a4, 24
or $a2, $a3, $a2
or $a1, $a2, $a1
ld.bu $a2, $a0, 13
ld.bu $a3, $a0, 12
ld.bu $a4, $a0, 14
ld.bu $a5, $a0, 15
slli.d $a2, $a2, 8
or $a2, $a2, $a3
slli.d $a3, $a4, 16
slli.d $a4, $a5, 24
or $a3, $a4, $a3
or $a2, $a3, $a2
slli.d $a2, $a2, 32
or $a1, $a2, $a1
st.d $a1, $sp, 16
ld.bu $a1, $a0, 1
ld.bu $a2, $a0, 0
ld.bu $a3, $a0, 2
ld.bu $a4, $a0, 3
slli.d $a1, $a1, 8
or $a1, $a1, $a2
slli.d $a2, $a3, 16
slli.d $a3, $a4, 24
or $a2, $a3, $a2
or $a1, $a2, $a1
ld.bu $a2, $a0, 5
ld.bu $a3, $a0, 4
ld.bu $a4, $a0, 6
ld.bu $a0, $a0, 7
slli.d $a2, $a2, 8
or $a2, $a2, $a3
slli.d $a3, $a4, 16
slli.d $a0, $a0, 24
or $a0, $a0, $a3
or $a0, $a0, $a2
slli.d $a0, $a0, 32
or $a0, $a0, $a1
st.d $a0, $sp, 8
addi.d $a0, $sp, 8
bl %plt(outs)
ld.d $ra, $sp, 72 # 8-byte Folded Reload
addi.d $sp, $sp, 80
ret
.Lfunc_end0:
.size test, .Lfunc_end0-test
# -- End function
.type .L.str,@object # @.str
.section .rodata.str1.1,"aMS",@progbits,1
.L.str:
.asciz "preemption imbalance "
.size .L.str, 22
.ident "clang version 20.0.0git (https://github.com/llvm/llvm-project 84ad292f343e0b0b821fc18447a20c59530f9ec7)"
.section ".note.GNU-stack","",@progbits
.addrsigLoongArch machine code (gcc 14.1.0):
.file "align.c"
.text
.section .rodata.str1.8,"aMS",@progbits,1
.align 3
.LC0:
.ascii "preemption imbalance \000"
.text
.align 2
.align 3
.globl test
.type test, @function
test:
.LFB0 = .
.cfi_startproc
la.local $r12,.LC0
ldptr.d $r15,$r12,0
ld.d $r14,$r12,8
ldptr.w $r13,$r12,16
ld.hu $r12,$r12,20
addi.d $r3,$r3,-80
.cfi_def_cfa_offset 80
or $r4,$r3,$r0
st.d $r1,$r3,72
.cfi_offset 1, -8
stptr.d $r15,$r3,0
st.d $r14,$r3,8
st.w $r13,$r3,16
st.h $r12,$r3,20
bl %plt(outs)
ld.d $r1,$r3,72
.cfi_restore 1
addi.d $r3,$r3,80
.cfi_def_cfa_offset 0
jr $r1
.cfi_endproc
.LFE0:
.size test, .-test
.ident "GCC: (crosstool-NG UNKNOWN) 14.1.0"
.section .note.GNU-stack,"",@progbits