135 lines
3.6 KiB
LLVM
135 lines
3.6 KiB
LLVM
; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py
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; RUN: llc < %s -mtriple=thumbv7m-arm-none-eabi | FileCheck %s
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define internal i32 @table_switch(i32 %x) {
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; CHECK-LABEL: table_switch:
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; CHECK: @ %bb.0: @ %entry
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; CHECK-NEXT: bti
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; CHECK-NEXT: subs r1, r0, #1
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; CHECK-NEXT: cmp r1, #3
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; CHECK-NEXT: bhi .LBB0_4
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; CHECK-NEXT: @ %bb.1: @ %entry
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; CHECK-NEXT: .LCPI0_0:
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; CHECK-NEXT: tbb [pc, r1]
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; CHECK-NEXT: @ %bb.2:
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; CHECK-NEXT: .LJTI0_0:
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; CHECK-NEXT: .byte (.LBB0_5-(.LCPI0_0+4))/2
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; CHECK-NEXT: .byte (.LBB0_3-(.LCPI0_0+4))/2
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; CHECK-NEXT: .byte (.LBB0_6-(.LCPI0_0+4))/2
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; CHECK-NEXT: .byte (.LBB0_7-(.LCPI0_0+4))/2
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; CHECK-NEXT: .p2align 1
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; CHECK-NEXT: .LBB0_3: @ %bb2
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; CHECK-NEXT: bti
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; CHECK-NEXT: movs r0, #2
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; CHECK-NEXT: bx lr
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; CHECK-NEXT: .LBB0_4: @ %sw.epilog
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; CHECK-NEXT: movs r0, #0
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; CHECK-NEXT: .LBB0_5: @ %return
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; CHECK-NEXT: bti
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; CHECK-NEXT: bx lr
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; CHECK-NEXT: .LBB0_6: @ %bb3
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; CHECK-NEXT: bti
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; CHECK-NEXT: movs r0, #3
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; CHECK-NEXT: bx lr
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; CHECK-NEXT: .LBB0_7: @ %bb4
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; CHECK-NEXT: bti
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; CHECK-NEXT: movs r0, #4
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; CHECK-NEXT: bx lr
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entry:
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switch i32 %x, label %sw.epilog [
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i32 1, label %bb1
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i32 2, label %bb2
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i32 3, label %bb3
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i32 4, label %bb4
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]
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bb1:
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br label %return
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bb2:
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br label %return
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bb3:
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br label %return
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bb4:
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br label %return
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sw.epilog:
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br label %return
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return:
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%ret = phi i32 [ 0, %sw.epilog ], [ 1, %bb1 ], [ 2, %bb2 ], [ 3, %bb3 ], [ 4, %bb4 ]
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ret i32 %ret
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}
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@computed_goto_cases = private unnamed_addr constant [2 x i8*] [i8* blockaddress(@computed_goto, %return), i8* blockaddress(@computed_goto, %case_1)], align 4
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define internal i32 @computed_goto(i32 %x) {
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; CHECK-LABEL: computed_goto:
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; CHECK: @ %bb.0: @ %entry
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; CHECK-NEXT: bti
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; CHECK-NEXT: movw r1, :lower16:.Lcomputed_goto_cases
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; CHECK-NEXT: movt r1, :upper16:.Lcomputed_goto_cases
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; CHECK-NEXT: ldr.w r0, [r1, r0, lsl #2]
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; CHECK-NEXT: mov pc, r0
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; CHECK-NEXT: .Ltmp3: @ Block address taken
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; CHECK-NEXT: .LBB1_1: @ %return
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; CHECK-NEXT: bti
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; CHECK-NEXT: movs r0, #2
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; CHECK-NEXT: bx lr
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; CHECK-NEXT: .Ltmp4: @ Block address taken
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; CHECK-NEXT: .LBB1_2: @ %case_1
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; CHECK-NEXT: bti
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; CHECK-NEXT: movs r0, #1
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; CHECK-NEXT: bx lr
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entry:
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%arrayidx = getelementptr inbounds [2 x i8*], [2 x i8*]* @computed_goto_cases, i32 0, i32 %x
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%0 = load i8*, i8** %arrayidx, align 4
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indirectbr i8* %0, [label %return, label %case_1]
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case_1:
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br label %return
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return:
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%ret = phi i32 [ 1, %case_1 ], [ 2, %entry ]
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ret i32 %ret
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}
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declare void @may_throw()
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declare void @consume_exception(i8*)
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declare i32 @__gxx_personality_v0(...)
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define internal i32 @exception_handling(i32 %0) personality i8* bitcast (i32 (...)* @__gxx_personality_v0 to i8*) {
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; CHECK-LABEL: exception_handling:
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; CHECK: @ %bb.0:
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; CHECK-NEXT: bti
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; CHECK-NEXT: .save {r7, lr}
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; CHECK-NEXT: push {r7, lr}
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; CHECK-NEXT: .Ltmp0:
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; CHECK-NEXT: bl may_throw
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; CHECK-NEXT: .Ltmp1:
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; CHECK-NEXT: @ %bb.1:
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; CHECK-NEXT: movs r0, #0
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; CHECK-NEXT: pop {r7, pc}
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; CHECK-NEXT: .LBB2_2:
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; CHECK-NEXT: .Ltmp2:
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; CHECK-NEXT: bti
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; CHECK-NEXT: bl consume_exception
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; CHECK-NEXT: movs r0, #1
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; CHECK-NEXT: pop {r7, pc}
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entry:
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invoke void @may_throw()
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to label %return unwind label %lpad
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lpad:
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%1 = landingpad { i8*, i32 }
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catch i8* null
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%2 = extractvalue { i8*, i32 } %1, 0
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call void @consume_exception(i8* %2)
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br label %return
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return:
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%retval.0 = phi i32 [ 1, %lpad ], [ 0, %entry ]
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ret i32 %retval.0
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}
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!llvm.module.flags = !{!1}
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!1 = !{i32 8, !"branch-target-enforcement", i32 1}
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