230 lines
7.6 KiB
LLVM
230 lines
7.6 KiB
LLVM
; RUN: llc -mtriple=thumbv8m.base-eabi -mattr=+execute-only %s -o - | FileCheck --check-prefix=CHECK --check-prefix=CHECK-T2BASE %s
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; RUN: llc -mtriple=thumbv8m.base-eabi -mcpu=cortex-m23 -mattr=+execute-only %s -o - | FileCheck --check-prefix=CHECK --check-prefix=CHECK-T2BASE %s
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; RUN: llc -mtriple=thumbv7m-eabi -mattr=+execute-only %s -o - | FileCheck --check-prefix=CHECK --check-prefix=CHECK-T2 %s
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; RUN: llc -mtriple=thumbv8m.main-eabi -mattr=+execute-only %s -o - | FileCheck --check-prefix=CHECK --check-prefix=CHECK-T2 %s
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; RUN: llc -mtriple=thumbv6m-eabi -mattr=+execute-only %s -o - | FileCheck --check-prefix=CHECK-T1 %s
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; CHECK-NOT: {{^ *}}.text{{$}}
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; CHECK: .section .text,"axy",%progbits,unique,0
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@var = global i32 0
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define i32 @global() minsize {
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; CHECK-LABEL: global:
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; CHECK: movw [[GLOBDEST:r[0-9]+]], :lower16:var
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; CHECK-NEXT: movt [[GLOBDEST]], :upper16:var
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; CHECK-T1-LABEL: global:
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; CHECK-T1: movs [[GLOBDEST:r[0-9]+]], :upper8_15:var
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; CHECK-T1-NEXT: lsls [[GLOBDEST]], [[GLOBDEST]], #8
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; CHECK-T1-NEXT: adds [[GLOBDEST]], :upper0_7:var
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; CHECK-T1-NEXT: lsls [[GLOBDEST]], [[GLOBDEST]], #8
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; CHECK-T1-NEXT: adds [[GLOBDEST]], :lower8_15:var
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; CHECK-T1-NEXT: lsls [[GLOBDEST]], [[GLOBDEST]], #8
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; CHECK-T1-NEXT: adds [[GLOBDEST]], :lower0_7:var
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%val = load i32, ptr @var
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ret i32 %val
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}
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define i32 @jump_table(i32 %c, i32 %a, i32 %b) #0 {
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; CHECK-LABEL: jump_table:
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; CHECK-T2: adr.w [[REG_JT:r[0-9]+]], .LJTI1_0
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; CHECK-T2: add.w [[REG_ENTRY:r[0-9]+]], [[REG_JT]], {{r[0-9]+}}, lsl #2
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; CHECK-T2: mov pc, [[REG_ENTRY]]
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; CHECK-T2BASE: lsls [[REG_OFFSET:r[0-9]+]], {{r[0-9]+}}, #2
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; CHECK-T2BASE: adr [[REG_JT:r[0-9]+]], .LJTI1_0
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; CHECK-T2BASE: adds [[REG_ENTRY:r[0-9]+]], [[REG_JT]], [[REG_OFFSET]]
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; CHECK-T2BASE: mov pc, [[REG_ENTRY]]
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; CHECK-LABEL: .LJTI1_0:
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; CHECK-NEXT: b.w
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; CHECK-NEXT: b.w
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; CHECK-NEXT: b.w
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; CHECK-NEXT: b.w
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; CHECK-NEXT: b.w
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; CHECK-NEXT: b.w
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; CHECK-T1-LABEL: jump_table:
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; CHECK-T1: lsls [[REG_OFFSET:r[0-9]+]], {{r[0-9]+}}, #2
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; CHECK-T1-NEXT: movs [[REG_JT:r[0-9]+]], :upper8_15:.LJTI1_0
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; CHECK-T1-NEXT: lsls [[REG_JT]], [[REG_JT]], #8
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; CHECK-T1-NEXT: adds [[REG_JT]], :upper0_7:.LJTI1_0
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; CHECK-T1-NEXT: lsls [[REG_JT]], [[REG_JT]], #8
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; CHECK-T1-NEXT: adds [[REG_JT]], :lower8_15:.LJTI1_0
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; CHECK-T1-NEXT: lsls [[REG_JT]], [[REG_JT]], #8
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; CHECK-T1-NEXT: adds [[REG_JT]], :lower0_7:.LJTI1_0
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; CHECK-T1-NEXT: ldr [[REG_ENTRY:r[0-9]+]], [[[REG_JT]], [[REG_OFFSET]]]
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; CHECK-T1-NEXT: mov pc, [[REG_ENTRY]]
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; CHECK-T1: .section .rodata,"a",%progbits
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; CHECK-T1-NEXT: .p2align 2, 0x0
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; CHECK-T1-NEXT: .LJTI1_0:
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; CHECK-T1-NEXT: .long
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; CHECK-T1-NEXT: .long
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; CHECK-T1-NEXT: .long
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; CHECK-T1-NEXT: .long
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; CHECK-T1-NEXT: .long
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; CHECK-T1-NEXT: .long
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entry:
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switch i32 %c, label %return [
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i32 1, label %sw.bb
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i32 2, label %sw.bb1
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i32 3, label %sw.bb3
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i32 4, label %sw.bb4
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i32 5, label %sw.bb6
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i32 6, label %sw.bb8
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]
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sw.bb: ; preds = %entry
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%add = add nsw i32 %a, 6
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br label %return
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sw.bb1: ; preds = %entry
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%add2 = add nsw i32 %a, 4
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br label %return
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sw.bb3: ; preds = %entry
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%sub = add nsw i32 %a, -3
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br label %return
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sw.bb4: ; preds = %entry
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%add5 = add nsw i32 %b, 5
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br label %return
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sw.bb6: ; preds = %entry
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%add7 = add nsw i32 %a, 1
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br label %return
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sw.bb8: ; preds = %entry
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%add9 = add nsw i32 %a, 2
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br label %return
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return: ; preds = %entry, %sw.bb8, %sw.bb6, %sw.bb4, %sw.bb3, %sw.bb1, %sw.bb
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%retval.0 = phi i32 [ %add9, %sw.bb8 ], [ %add7, %sw.bb6 ], [ %add5, %sw.bb4 ], [ %sub, %sw.bb3 ], [ %add2, %sw.bb1 ], [ %add, %sw.bb ], [ 0, %entry ]
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ret i32 %retval.0
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}
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@.str = private unnamed_addr constant [4 x i8] c"FOO\00", align 1
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define hidden ptr @string_literal() {
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entry:
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; CHECK-LABEL: string_literal:
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; CHECK: movw [[STRLIT:r[0-9]+]], :lower16:.L.str
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; CHECK-NEXT: movt [[STRLIT]], :upper16:.L.str
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; CHECK-T1-LABEL: string_literal:
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; CHECK-T1: movs [[STRLIT:r[0-9]+]], :upper8_15:.L.str
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; CHECK-T1-NEXT: lsls [[STRLIT]], [[STRLIT]], #8
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; CHECK-T1-NEXT: adds [[STRLIT]], :upper0_7:.L.str
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; CHECK-T1-NEXT: lsls [[STRLIT]], [[STRLIT]], #8
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; CHECK-T1-NEXT: adds [[STRLIT]], :lower8_15:.L.str
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; CHECK-T1-NEXT: lsls [[STRLIT]], [[STRLIT]], #8
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; CHECK-T1-NEXT: adds [[STRLIT]], :lower0_7:.L.str
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ret ptr @.str
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}
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@external_global = external global i32
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define i32 @test_external_global() {
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entry:
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; CHECK-LABEL: external_global:
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; CHECK: movw [[EXTGLOB:r[0-9]+]], :lower16:external_global
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; CHECK-NEXT: movt [[EXTGLOB]], :upper16:external_global
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; CHECK-T1-LABEL: external_global:
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; CHECK-T1: movs [[EXTGLOB:r[0-9]+]], :upper8_15:external_global
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; CHECK-T1-NEXT: lsls [[EXTGLOB]], [[EXTGLOB]], #8
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; CHECK-T1-NEXT: adds [[EXTGLOB]], :upper0_7:external_global
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; CHECK-T1-NEXT: lsls [[EXTGLOB]], [[EXTGLOB]], #8
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; CHECK-T1-NEXT: adds [[EXTGLOB]], :lower8_15:external_global
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; CHECK-T1-NEXT: lsls [[EXTGLOB]], [[EXTGLOB]], #8
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; CHECK-T1-NEXT: adds [[EXTGLOB]], :lower0_7:external_global
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%v = load i32, ptr @external_global
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ret i32 %v
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}
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define i32 @test_imm() {
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entry:
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; CHECK-LABEL: test_imm:
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; CHECK: movw [[IMMDEST:r[0-9]+]], #13124
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; CHECK-NEXT: movt [[IMMDEST]], #4386
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; CHECK-NEXT: bx lr
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; CHECK-T1-LABEL: test_imm:
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; CHECK-T1: movs [[IMMDEST:r[0-9]+]], #17
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; CHECK-T1-NEXT: lsls [[IMMDEST]], [[IMMDEST]], #8
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; CHECK-T1-NEXT: adds [[IMMDEST]], #34
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; CHECK-T1-NEXT: lsls [[IMMDEST]], [[IMMDEST]], #8
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; CHECK-T1-NEXT: adds [[IMMDEST]], #51
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; CHECK-T1-NEXT: lsls [[IMMDEST]], [[IMMDEST]], #8
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; CHECK-T1-NEXT: adds [[IMMDEST]], #68
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; CHECK-T1-NEXT: bx lr
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ret i32 u0x11223344
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}
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define i32 @test_imm_high_half() {
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entry:
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; CHECK-LABEL: test_imm_high_half:
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; CHECK-T2BASE: movw [[IMMDEST:r[0-9]+]], #0
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; CHECK-T2: movs [[IMMDEST:r[0-9]+]], #0
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; CHECK-NEXT: movt [[IMMDEST]], #4386
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; CHECK-NEXT: bx lr
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; CHECK-T1-LABEL: test_imm_high_half:
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; CHECK-T1: movs [[IMMDEST:r[0-9]+]], #17
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; CHECK-T1-NEXT: lsls [[IMMDEST]], [[IMMDEST]], #8
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; CHECK-T1-NEXT: adds [[IMMDEST]], #34
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; CHECK-T1-NEXT: lsls [[IMMDEST]], [[IMMDEST]], #16
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; CHECK-T1-NEXT: bx lr
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ret i32 u0x11220000
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}
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define i32 @test_imm_low_half() {
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; CHECK-LABEL: test_imm_low_half:
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; CHECK: movw [[IMMDEST:r[0-9]+]], #13124
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; CHECK-NEXT: bx lr
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; CHECK-T1-LABEL: test_imm_low_half:
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; CHECK-T1: movs [[IMMDEST]], #51
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; CHECK-T1-NEXT: lsls [[IMMDEST]], [[IMMDEST]], #8
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; CHECK-T1-NEXT: adds [[IMMDEST]], #68
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; CHECK-T1-NEXT: bx lr
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entry:
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ret i32 u0x3344
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}
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define i32 @test_imm_middle_bytes() {
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; CHECK-LABEL: test_imm_middle_bytes:
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; CHECK: movw [[IMMDEST:r[0-9]+]], #13056
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; CHECK-NEXT: movt [[IMMDEST]], #34
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; CHECK-NEXT: bx lr
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; CHECK-T1-LABEL: test_imm_middle_bytes:
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; CHECK-T1: movs [[IMMDEST]], #34
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; CHECK-T1-NEXT: lsls [[IMMDEST]], [[IMMDEST]], #8
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; CHECK-T1-NEXT: adds [[IMMDEST]], #51
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; CHECK-T1-NEXT: lsls [[IMMDEST]], [[IMMDEST]], #8
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; CHECK-T1-NEXT: bx lr
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ret i32 u0x223300
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}
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; This struct is sized so that the byval call does an inline memcpy of
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; 0x10001 bytes.
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%struct.struct_t = type { [65553 x i8] }
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@byval_arg = global %struct.struct_t zeroinitializer
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declare void @byval_fn(ptr byval(%struct.struct_t))
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define void @test_byval_call() {
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entry:
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; CHECK-LABEL: test_byval_call:
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; CHECK-T2BASE: movw [[BYVAL_CPYSIZE:r[0-9]+]], #1
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; CHECK-T2: movs [[BYVAL_CPYSIZE:r[0-9]+]], #1
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; CHECK: movt [[BYVAL_CPYSIZE]], #1
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; CHECK-T1-LABEL: test_byval_call:
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; CHECK-T1: movs [[BYVAL_CPYSIZE:r[0-9]+]], #1
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; CHECK-T1: lsls [[BYVAL_CPYSIZE]], [[BYVAL_CPYSIZE]], #16
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; CHECK-T1: adds [[BYVAL_CPYSIZE]], #1
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call void @byval_fn(ptr byval(%struct.struct_t) @byval_arg)
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ret void
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}
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