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1# RUN: llc -mtriple=x86_64-- -verify-machineinstrs -run-pass block-placement -o - %s | FileCheck %s2# Check the conditional jump in bb.1 is changed to unconditional after block placement swaps bb.2 and bb.3.3 4--- |5 @a = external global i166 @b = external global i327 8 declare void @dummy1()9 declare void @dummy2()10 declare void @dummy3()11 12 ; Function Attrs: nounwind13 define void @f2(i1 %arg) {14 br i1 %arg, label %bb1, label %bb315 16 bb1:17 call void @dummy1()18 call void @dummy1()19 call void @dummy1()20 br i1 %arg, label %bb2, label %bb221 22 bb2:23 call void @dummy2()24 call void @dummy2()25 call void @dummy2()26 br label %bb427 28 bb3:29 call void @dummy3()30 call void @dummy3()31 call void @dummy3()32 br label %bb233 34 bb4:35 ret void36 }37 38 39...40---41# CHECK-LABEL: name: f242# CHECK: bb.1:43# CHECK: JMP_1 %bb.244# CHECK: bb.3:45# CHECK: bb.2:46name: f247body: |48 bb.0 (%ir-block.0):49 successors: %bb.1(50), %bb.3(50)50 51 JCC_1 %bb.1, 2, implicit $eflags52 JMP_1 %bb.353 bb.1:54 successors: %bb.2(100)55 56 CALL64pcrel32 @dummy1, csr_64, implicit $rsp, implicit-def $rsp57 CALL64pcrel32 @dummy1, csr_64, implicit $rsp, implicit-def $rsp58 CALL64pcrel32 @dummy1, csr_64, implicit $rsp, implicit-def $rsp59 JCC_1 %bb.2, 5, implicit $eflags60 61 bb.2:62 successors: %bb.4(100)63 64 CALL64pcrel32 @dummy2, csr_64, implicit $rsp, implicit-def $rsp65 CALL64pcrel32 @dummy2, csr_64, implicit $rsp, implicit-def $rsp66 CALL64pcrel32 @dummy2, csr_64, implicit $rsp, implicit-def $rsp67 JMP_1 %bb.468 69 bb.3:70 successors: %bb.2(100)71 CALL64pcrel32 @dummy3, csr_64, implicit $rsp, implicit-def $rsp72 CALL64pcrel32 @dummy3, csr_64, implicit $rsp, implicit-def $rsp73 CALL64pcrel32 @dummy3, csr_64, implicit $rsp, implicit-def $rsp74 JMP_1 %bb.275 76 bb.4:77 RET6478 79...80