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| ; RUN: llc < %s -O0 -fast-isel-abort=1 -relocation-model=dynamic-no-pic -mtriple=armv7-apple-ios -verify-machineinstrs | FileCheck %s --check-prefix=ARM --check-prefix=ARM-MACHO
; RUN: llc < %s -O0 -fast-isel-abort=1 -relocation-model=dynamic-no-pic -mtriple=armv7-linux-gnueabi -verify-machineinstrs | FileCheck %s --check-prefix=ARM --check-prefix=ARM-ELF
; RUN: llc < %s -O0 -fast-isel-abort=1 -relocation-model=dynamic-no-pic -mtriple=thumbv7-apple-ios -verify-machineinstrs | FileCheck %s --check-prefix=THUMB
; Very basic fast-isel functionality.
define i32 @test0(i32 %a, i32 %b) nounwind {
entry:
%a.addr = alloca i32, align 4
%b.addr = alloca i32, align 4
store i32 %a, i32* %a.addr
store i32 %b, i32* %b.addr
%tmp = load i32, i32* %a.addr
%tmp1 = load i32, i32* %b.addr
%add = add nsw i32 %tmp, %tmp1
ret i32 %add
}
; Check truncate to bool
define void @test1(i32 %tmp) nounwind {
entry:
%tobool = trunc i32 %tmp to i1
br i1 %tobool, label %if.then, label %if.end
if.then: ; preds = %entry
call void @test1(i32 0)
br label %if.end
if.end: ; preds = %if.then, %entry
ret void
; ARM-LABEL: test1:
; ARM: tst r0, #1
; THUMB-LABEL: test1:
; THUMB: tst.w r0, #1
}
; Check some simple operations with immediates
define void @test2(i32 %tmp, i32* %ptr) nounwind {
; THUMB-LABEL: test2:
; ARM-LABEL: test2:
b1:
%a = add i32 %tmp, 4096
store i32 %a, i32* %ptr
br label %b2
; THUMB: add.w {{.*}} #4096
; ARM: add {{.*}} #4096
b2:
%b = add i32 %tmp, 4095
store i32 %b, i32* %ptr
br label %b3
; THUMB: addw {{.*}} #4095
; ARM: movw {{.*}} #4095
; ARM: add
b3:
%c = or i32 %tmp, 4
store i32 %c, i32* %ptr
ret void
; THUMB: orr {{.*}} #4
; ARM: orr {{.*}} #4
}
define void @test3(i32 %tmp, i32* %ptr1, i16* %ptr2, i8* %ptr3) nounwind {
; THUMB-LABEL: test3:
; ARM-LABEL: test3:
bb1:
%a1 = trunc i32 %tmp to i16
%a2 = trunc i16 %a1 to i8
%a3 = trunc i8 %a2 to i1
%a4 = zext i1 %a3 to i8
store i8 %a4, i8* %ptr3
%a5 = zext i8 %a4 to i16
store i16 %a5, i16* %ptr2
%a6 = zext i16 %a5 to i32
store i32 %a6, i32* %ptr1
br label %bb2
; THUMB: and
; THUMB: strb
; THUMB: and{{.*}}, #255
; THUMB: strh
; THUMB: uxth
; ARM: and
; ARM: strb
; ARM: and{{.*}}, #255
; ARM: strh
; ARM: uxth
bb2:
%b1 = trunc i32 %tmp to i16
%b2 = trunc i16 %b1 to i8
store i8 %b2, i8* %ptr3
%b3 = sext i8 %b2 to i16
store i16 %b3, i16* %ptr2
%b4 = sext i16 %b3 to i32
store i32 %b4, i32* %ptr1
br label %bb3
; THUMB: strb
; THUMB: sxtb
; THUMB: strh
; THUMB: sxth
; ARM: strb
; ARM: sxtb
; ARM: strh
; ARM: sxth
bb3:
%c1 = load i8, i8* %ptr3
%c2 = load i16, i16* %ptr2
%c3 = load i32, i32* %ptr1
%c4 = zext i8 %c1 to i32
%c5 = sext i16 %c2 to i32
%c6 = add i32 %c4, %c5
%c7 = sub i32 %c3, %c6
store i32 %c7, i32* %ptr1
ret void
; THUMB: ldrb
; THUMB: ldrh
; THUMB: and{{.*}}, #255
; THUMB: sxth
; THUMB: add
; THUMB: sub
; ARM: ldrb
; ARM: ldrh
; ARM: and{{.*}}, #255
; ARM: sxth
; ARM: add
; ARM: sub
}
; Check loads/stores with globals
@test4g = external global i32
define void @test4() {
%a = load i32, i32* @test4g
%b = add i32 %a, 1
store i32 %b, i32* @test4g
ret void
; Note that relocations are either movw/movt or constant pool
; loads. Different platforms will select different approaches.
; THUMB: {{(movw r0, :lower16:L_test4g\$non_lazy_ptr)|(ldr.n r0, .LCPI)}}
; THUMB: {{(movt r0, :upper16:L_test4g\$non_lazy_ptr)?}}
; THUMB: ldr [[REG:r[0-9]+]], [r0]
; THUMB: ldr [[REG1:r[0-9]+]], {{\[}}[[REG]]]
; THUMB: adds [[REG1]], #1
; THUMB: str [[REG1]], {{\[}}[[REG]]]
; ARM-MACHO: {{(movw r0, :lower16:L_test4g\$non_lazy_ptr)|(ldr r0, .LCPI)}}
; ARM-MACHO: {{(movt r0, :upper16:L_test4g\$non_lazy_ptr)?}}
; ARM-MACHO: ldr [[REG:r[0-9]+]], [r0]
; ARM-ELF: movw [[REG:r[0-9]+]], :lower16:test4g
; ARM-ELF: movt [[REG]], :upper16:test4g
; ARM: ldr [[REG1:r[0-9]+]], {{\[}}[[REG]]]
; ARM: add [[REG2:r[0-9]+]], [[REG1]], #1
; ARM: str [[REG2]], {{\[}}[[REG]]]
}
; ARM: @urem_fold
; THUMB: @urem_fold
; ARM: and r0, r0, #31
; THUMB: and r0, r0, #31
define i32 @urem_fold(i32 %a) nounwind {
%rem = urem i32 %a, 32
ret i32 %rem
}
define i32 @trap_intrinsic() noreturn nounwind {
entry:
; ARM: @trap_intrinsic
; THUMB: @trap_intrinsic
; ARM: trap
; THUMB: trap
tail call void @llvm.trap( )
unreachable
}
declare void @llvm.trap() nounwind
|