102 lines
2.5 KiB
LLVM
102 lines
2.5 KiB
LLVM
; RUN: llc -march=x86-64 -asm-verbose=false < %s | FileCheck %s
|
|
|
|
; This switch should use bit tests, and the third bit test case is just
|
|
; testing for one possible value, so it doesn't need a bt.
|
|
|
|
; CHECK: movabsq $2305843009482129440, %r
|
|
; CHECK-NEXT: btq %rax, %r
|
|
; CHECK-NEXT: jae
|
|
; CHECK: movl $671088640, %e
|
|
; CHECK-NEXT: btq %rax, %r
|
|
; CHECK-NEXT: jae
|
|
; CHECK: testq %rax, %r
|
|
; CHECK-NEXT: j
|
|
|
|
define void @test(i8* %l) nounwind {
|
|
entry:
|
|
%l.addr = alloca i8*, align 8 ; <i8**> [#uses=2]
|
|
store i8* %l, i8** %l.addr
|
|
%tmp = load i8** %l.addr ; <i8*> [#uses=1]
|
|
%tmp1 = load i8* %tmp ; <i8> [#uses=1]
|
|
%conv = sext i8 %tmp1 to i32 ; <i32> [#uses=1]
|
|
switch i32 %conv, label %sw.default [
|
|
i32 62, label %sw.bb
|
|
i32 60, label %sw.bb
|
|
i32 38, label %sw.bb2
|
|
i32 94, label %sw.bb2
|
|
i32 61, label %sw.bb2
|
|
i32 33, label %sw.bb4
|
|
]
|
|
|
|
sw.bb: ; preds = %entry, %entry
|
|
call void @foo(i32 0)
|
|
br label %sw.epilog
|
|
|
|
sw.bb2: ; preds = %entry, %entry, %entry
|
|
call void @foo(i32 1)
|
|
br label %sw.epilog
|
|
|
|
sw.bb4: ; preds = %entry
|
|
call void @foo(i32 3)
|
|
br label %sw.epilog
|
|
|
|
sw.default: ; preds = %entry
|
|
call void @foo(i32 97)
|
|
br label %sw.epilog
|
|
|
|
sw.epilog: ; preds = %sw.default, %sw.bb4, %sw.bb2, %sw.bb
|
|
ret void
|
|
}
|
|
|
|
declare void @foo(i32)
|
|
|
|
; Don't zero extend the test operands to pointer type if it can be avoided.
|
|
; rdar://8781238
|
|
define void @test2(i32 %x) nounwind ssp {
|
|
; CHECK: test2:
|
|
; CHECK: cmpl $6
|
|
; CHECK: ja
|
|
|
|
; CHECK-NEXT: movl $91
|
|
; CHECK-NOT: movl
|
|
; CHECK-NEXT: btl
|
|
; CHECK-NEXT: jae
|
|
entry:
|
|
switch i32 %x, label %if.end [
|
|
i32 6, label %if.then
|
|
i32 4, label %if.then
|
|
i32 3, label %if.then
|
|
i32 1, label %if.then
|
|
i32 0, label %if.then
|
|
]
|
|
|
|
if.then: ; preds = %entry, %entry, %entry, %entry, %entry
|
|
tail call void @bar() nounwind
|
|
ret void
|
|
|
|
if.end: ; preds = %entry
|
|
ret void
|
|
}
|
|
|
|
declare void @bar()
|
|
|
|
define void @test3(i32 %x) nounwind {
|
|
; CHECK: test3:
|
|
; CHECK: cmpl $5
|
|
; CHECK: ja
|
|
; CHECK: cmpl $4
|
|
; CHECK: je
|
|
switch i32 %x, label %if.end [
|
|
i32 0, label %if.then
|
|
i32 1, label %if.then
|
|
i32 2, label %if.then
|
|
i32 3, label %if.then
|
|
i32 5, label %if.then
|
|
]
|
|
if.then:
|
|
tail call void @bar() nounwind
|
|
ret void
|
|
if.end:
|
|
ret void
|
|
}
|