nacl-align.ll
2.16 KB
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; RUN: llc -filetype=asm -mtriple=mipsel-none-nacl -relocation-model=static \
; RUN: -O3 < %s | FileCheck %s
; This test tests that NaCl functions are bundle-aligned.
define void @test0() {
ret void
; CHECK: .p2align 4
; CHECK-NOT: .p2align
; CHECK-LABEL: test0:
}
; This test tests that blocks that are jumped to through jump table are
; bundle-aligned.
define i32 @test1(i32 %i) {
entry:
switch i32 %i, label %default [
i32 0, label %bb1
i32 1, label %bb2
i32 2, label %bb3
i32 3, label %bb4
]
bb1:
ret i32 111
bb2:
ret i32 222
bb3:
ret i32 333
bb4:
ret i32 444
default:
ret i32 555
; CHECK-LABEL: test1:
; CHECK: .p2align 4
; CHECK-NEXT: ${{BB[0-9]+_[0-9]+}}:
; CHECK-NEXT: jr $ra
; CHECK-NEXT: addiu $2, $zero, 111
; CHECK-NEXT: ${{BB[0-9]+_[0-9]+}}:
; CHECK-NEXT: jr $ra
; CHECK-NEXT: addiu $2, $zero, 555
; CHECK-NEXT: .p2align 4
; CHECK-NEXT: ${{BB[0-9]+_[0-9]+}}:
; CHECK-NEXT: jr $ra
; CHECK-NEXT: addiu $2, $zero, 222
; CHECK-NEXT: .p2align 4
; CHECK-NEXT: ${{BB[0-9]+_[0-9]+}}:
; CHECK-NEXT: jr $ra
; CHECK-NEXT: addiu $2, $zero, 333
}
; This test tests that a block whose address is taken is bundle-aligned in NaCl.
@bb_array = constant [2 x i8*] [i8* blockaddress(@test2, %bb1),
i8* blockaddress(@test2, %bb2)], align 4
define i32 @test2(i32 %i) {
entry:
%elementptr = getelementptr inbounds [2 x i8*], [2 x i8*]* @bb_array, i32 0, i32 %i
%0 = load i8*, i8** %elementptr, align 4
indirectbr i8* %0, [label %bb1, label %bb2]
bb1:
ret i32 111
bb2:
ret i32 222
; CHECK-LABEL: test2:
; Note that there are two consecutive labels - one temporary and one for
; basic block.
; CHECK: .p2align 4
; CHECK-NEXT: ${{[a-zA-Z0-9]+}}:
; CHECK-NEXT: ${{BB[0-9]+_[0-9]+}}:
; CHECK-NEXT: jr $ra
; CHECK-NEXT: addiu $2, $zero, 111
; CHECK-NEXT: .p2align 4
; CHECK-NEXT: ${{[a-zA-Z0-9]+}}:
; CHECK-NEXT: ${{BB[0-9]+_[0-9]+}}:
; CHECK-NEXT: jr $ra
; CHECK-NEXT: addiu $2, $zero, 222
}