1
; RUN: llc < %s -O0 -fast-isel-abort=1 -relocation-model=dynamic-no-pic -mtriple=armv7-apple-ios -verify-machineinstrs | FileCheck %s --check-prefix=ARM
2
; RUN: llc < %s -O0 -fast-isel-abort=1 -relocation-model=dynamic-no-pic -mtriple=armv7-linux-gnueabi -verify-machineinstrs | FileCheck %s --check-prefix=ARM
3
; RUN: llc < %s -O0 -fast-isel-abort=1 -relocation-model=dynamic-no-pic -mtriple=thumbv7-apple-ios -verify-machineinstrs | FileCheck %s --check-prefix=THUMB
5
; Very basic fast-isel functionality.
6
define i32 @test0(i32 %a, i32 %b) nounwind {
8
%a.addr = alloca i32, align 4
9
%b.addr = alloca i32, align 4
10
store i32 %a, i32* %a.addr
11
store i32 %b, i32* %b.addr
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%tmp = load i32, i32* %a.addr
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%tmp1 = load i32, i32* %b.addr
14
%add = add nsw i32 %tmp, %tmp1
18
; Check truncate to bool
19
define void @test1(i32 %tmp) nounwind {
21
%tobool = trunc i32 %tmp to i1
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br i1 %tobool, label %if.then, label %if.end
24
if.then: ; preds = %entry
25
call void @test1(i32 0)
28
if.end: ; preds = %if.then, %entry
36
; Check some simple operations with immediates
37
define void @test2(i32 %tmp, i32* %ptr) nounwind {
42
%a = add i32 %tmp, 4096
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store i32 %a, i32* %ptr
46
; THUMB: add.w {{.*}} #4096
47
; ARM: add {{.*}} #4096
50
%b = add i32 %tmp, 4095
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store i32 %b, i32* %ptr
53
; THUMB: addw {{.*}} #4095
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; ARM: movw {{.*}} #4095
59
store i32 %c, i32* %ptr
62
; THUMB: orr {{.*}} #4
66
define void @test3(i32 %tmp, i32* %ptr1, i16* %ptr2, i8* %ptr3) nounwind {
71
%a1 = trunc i32 %tmp to i16
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%a2 = trunc i16 %a1 to i8
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%a3 = trunc i8 %a2 to i1
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%a4 = zext i1 %a3 to i8
75
store i8 %a4, i8* %ptr3
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%a5 = zext i8 %a4 to i16
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store i16 %a5, i16* %ptr2
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%a6 = zext i16 %a5 to i32
79
store i32 %a6, i32* %ptr1
84
; THUMB: and{{.*}}, #255
89
; ARM: and{{.*}}, #255
94
%b1 = trunc i32 %tmp to i16
95
%b2 = trunc i16 %b1 to i8
96
store i8 %b2, i8* %ptr3
97
%b3 = sext i8 %b2 to i16
98
store i16 %b3, i16* %ptr2
99
%b4 = sext i16 %b3 to i32
100
store i32 %b4, i32* %ptr1
113
%c1 = load i8, i8* %ptr3
114
%c2 = load i16, i16* %ptr2
115
%c3 = load i32, i32* %ptr1
116
%c4 = zext i8 %c1 to i32
117
%c5 = sext i16 %c2 to i32
118
%c6 = add i32 %c4, %c5
119
%c7 = sub i32 %c3, %c6
120
store i32 %c7, i32* %ptr1
125
; THUMB: and{{.*}}, #255
131
; ARM: and{{.*}}, #255
137
; Check loads/stores with globals
138
@test4g = external global i32
140
define void @test4() {
141
%a = load i32, i32* @test4g
143
store i32 %b, i32* @test4g
147
; Note that relocations are either movw/movt or constant pool
148
; loads. Different platforms will select different approaches.
150
; THUMB: {{(movw r0, :lower16:L_test4g\$non_lazy_ptr)|(ldr.n r0, .LCPI)}}
151
; THUMB: {{(movt r0, :upper16:L_test4g\$non_lazy_ptr)?}}
152
; THUMB: ldr r0, [r0]
153
; THUMB: ldr r1, [r0]
155
; THUMB: str r1, [r0]
157
; ARM: {{(movw r0, :lower16:L_test4g\$non_lazy_ptr)|(ldr r0, .LCPI)}}
158
; ARM: {{(movt r0, :upper16:L_test4g\$non_lazy_ptr)?}}
161
; ARM: add r1, r1, #1
167
; ARM: and r0, r0, #31
168
; THUMB: and r0, r0, #31
169
define i32 @urem_fold(i32 %a) nounwind {
170
%rem = urem i32 %a, 32
174
define i32 @trap_intrinsic() noreturn nounwind {
176
; ARM: @trap_intrinsic
177
; THUMB: @trap_intrinsic
180
tail call void @llvm.trap( )
184
declare void @llvm.trap() nounwind