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TheRock/compiler/amd-llvm/llvm/test/MC/ARM/remove-redundant-bti.ll
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derek.holloway 7502bf64a4
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Flatten subprojects into a single base monorepo
2026-09-02 16:34:47 -07:00

84 lines
2.3 KiB
LLVM

; RUN: llc -O2 -mtriple=thumbv7m-eabi < %s | FileCheck %s
; RUN: llc -O2 -mtriple=thumbv8m.main-eabi < %s | FileCheck %s
define dso_local i32 @test_for_tbb_tbh_cases(i32 noundef %x) local_unnamed_addr #0 {
entry:
switch i32 %x, label %sw.default [
i32 0, label %sw.bb
i32 1, label %return
i32 2, label %sw.bb2
i32 3, label %sw.bb3
]
sw.bb: ; preds = %entry
%call = tail call i32 @g(i32 noundef 0) #2
%add = add nsw i32 %call, 1
br label %return
sw.bb2: ; preds = %entry
br label %return
sw.bb3: ; preds = %entry
br label %return
sw.default: ; preds = %entry
br label %return
return: ; preds = %entry, %sw.default, %sw.bb3, %sw.bb2, %sw.bb
%retval.0 = phi i32 [ 5, %sw.default ], [ 4, %sw.bb3 ], [ 3, %sw.bb2 ], [ %add, %sw.bb ], [ 2, %entry ]
ret i32 %retval.0
; CHECK: tbb [pc, r1]
; CHECK-LABEL: .LBB0_3:
; CHECK-NOT: bti
; CHECK-LABEL: .LBB0_4:
; CHECK-NOT: bti
; CHECK-LABEL: .LBB0_5:
; CHECK-NOT: bti
; CHECK-LABEL: .LBB0_6:
; CHECK-NOT: bti
; CHECK-LABEL: .LBB0_7:
; CHECK-NOT: bti
}
declare dso_local i32 @g(i32 noundef) local_unnamed_addr #1
define dso_local i32 @test_for_direct_jump_cases(i32 noundef %x) local_unnamed_addr #0 {
entry:
switch i32 %x, label %sw.default [
i32 0, label %sw.bb
i32 2, label %cleanup
i32 8, label %sw.bb2
i32 5, label %sw.bb3
]
sw.bb: ; preds = %entry
tail call void asm sideeffect ".space 140000", ""()
br label %cleanup
sw.bb2: ; preds = %entry
br label %cleanup
sw.bb3: ; preds = %entry
br label %cleanup
sw.default: ; preds = %entry
br label %cleanup
cleanup: ; preds = %entry, %sw.default, %sw.bb3, %sw.bb2, %sw.bb
%retval.0 = phi i32 [ 5, %sw.default ], [ 4, %sw.bb3 ], [ 3, %sw.bb2 ], [ 1, %sw.bb ], [ %x, %entry ]
ret i32 %retval.0
; CHECK: mov pc, r1
; CHECK-LABEL: .LBB1_3:
; CHECK-NOT: bti
; CHECK-LABEL: .LBB1_4:
; CHECK-NOT: bti
; CHECK-LABEL: .LBB1_5:
; CHECK-NOT: bti
; CHECK-LABEL: .LBB1_6:
; CHECK-NOT: bti
; CHECK-LABEL: .LBB1_7:
; CHECK-NOT: bti
}