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; RUN: pnacl-llc -mtriple=armv7-unknown-nacl -sfi-branch -filetype=obj %s -o - \
; RUN: | llvm-objdump -disassemble -triple armv7 - | FileCheck %s
define i32 @foo(i32 %aa, i32 %bb) nounwind {
entry:
%aa.addr = alloca i32, align 4
%bb.addr = alloca i32, align 4
%cc = alloca i32, align 4
%dd = alloca i32, align 4
store i32 %aa, i32* %aa.addr, align 4
store i32 %bb, i32* %bb.addr, align 4
%0 = load i32* %aa.addr, align 4
%1 = load i32* %bb.addr, align 4
%mul = mul nsw i32 %0, %1
store i32 %mul, i32* %cc, align 4
%2 = load i32* %aa.addr, align 4
%mul1 = mul nsw i32 %2, 17
%3 = load i32* %cc, align 4
%sub = sub nsw i32 %mul1, %3
store i32 %sub, i32* %dd, align 4
%4 = load i32* %dd, align 4
ret i32 %4
; This checks two things:
; 1. bx lr is sandboxed by prepending a bic
; 2. The bic/bx pair don't straddle a 16-byte bundle boundary, hence the nop
; CHECK: nop
; CHECK-NEXT: bic lr, lr, #3221225487
; CHECK-NEXT: bx lr
}
define i32 @bar(i32 %aa, i32 %bb) nounwind {
entry:
; Check that the function start is padded with nops to start at a bundle
; boundary
; CHECK: nop
; CHECK-NEXT: nop
; CHECK-NOT: :
; CHECK: bar:
; CHECK-NEXT: push
%aa.addr = alloca i32, align 4
%bb.addr = alloca i32, align 4
store i32 %aa, i32* %aa.addr, align 4
store i32 %bb, i32* %bb.addr, align 4
%0 = load i32* %aa.addr, align 4
%mul = mul nsw i32 %0, 19
%call = call i32 @foo(i32 %mul, i32 7)
; Check that the call is padded to be at the end of a bundle
; CHECK: nop
; CHECK-NEXT: nop
; CHECK-NEXT: nop
; CHECK-NEXT: bl
%1 = load i32* %bb.addr, align 4
%mul1 = mul nsw i32 %1, 31
%2 = load i32* %bb.addr, align 4
%div = sdiv i32 %2, 7
%add = add nsw i32 %div, 191
%call2 = call i32 @foo(i32 %mul1, i32 %add)
; Check that the call is padded to be at the end of a bundle
; CHECK: nop
; CHECK-NEXT: nop
; CHECK-NEXT: bl
%add3 = add nsw i32 %call, %call2
ret i32 %add3
}
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