llvm-for-llvmta/test/CodeGen/Thumb2/constant-islands-jump-table.ll

48 lines
819 B
LLVM

; RUN: llc < %s -mtriple=thumbv7-linux-gnueabihf -O1 %s -o - | FileCheck %s
; CHECK-LABEL: test_jump_table:
; CHECK: b{{.*}} .LBB
; CHECK-NOT: tbh
define i32 @test_jump_table(i32 %x, float %in) {
h1:
%b0 = fadd float %in, 1234.5
%b1 = fptoui float %b0 to i32
switch i32 %x, label %h2 [
i32 0, label %h3
i32 2, label %h4
i32 4, label %h5
i32 6, label %h6
]
h2:
%a0 = add i32 %x, 5
br label %h3
h3:
%d2 = phi i32 [%b1, %h1], [%a0, %h2]
%d3 = add i32 %d2, 3
br label %h4
h4:
%c2 = phi i32 [%b1, %h1], [%d3, %h3]
%c3 = add i32 %c2, 5
br label %h5
h5:
%a2 = phi i32 [%b1, %h1], [%c3, %h4]
%a3 = add i32 %a2, 6
br label %h6
h6:
%y = phi i32 [0, %h1], [%a3, %h5]
call i32 @llvm.arm.space(i32 2000, i32 undef)
ret i32 %y
}
declare i32 @llvm.arm.space(i32, i32)