forked from OSchip/llvm-project
85 lines
3.0 KiB
LLVM
85 lines
3.0 KiB
LLVM
|
; RUN: llc -march=sparc < %s | FileCheck %s
|
||
|
|
|
||
|
|
; Check that all the switches turned into lookup tables by SimplifyCFG are
|
||
|
|
; turned back into switches for targets that don't like lookup tables.
|
||
|
|
|
||
|
|
@.str = private unnamed_addr constant [4 x i8] c"foo\00", align 1
|
||
|
|
@.str1 = private unnamed_addr constant [4 x i8] c"bar\00", align 1
|
||
|
|
@.str2 = private unnamed_addr constant [4 x i8] c"baz\00", align 1
|
||
|
|
@.str3 = private unnamed_addr constant [4 x i8] c"qux\00", align 1
|
||
|
|
@.str4 = private unnamed_addr constant [6 x i8] c"error\00", align 1
|
||
|
|
@switch.table = private unnamed_addr constant [7 x i32] [i32 55, i32 123, i32 0, i32 -1, i32 27, i32 62, i32 1]
|
||
|
|
@switch.table1 = private unnamed_addr constant [4 x i8] c"*\09X\05"
|
||
|
|
@switch.table2 = private unnamed_addr constant [4 x float] [float 0x40091EB860000000, float 0x3FF3BE76C0000000, float 0x4012449BA0000000, float 0x4001AE1480000000]
|
||
|
|
@switch.table3 = private unnamed_addr constant [4 x i8*] [i8* getelementptr inbounds ([4 x i8]* @.str, i64 0, i64 0), i8* getelementptr inbounds ([4 x i8]* @.str1, i64 0, i64 0), i8* getelementptr inbounds ([4 x i8]* @.str2, i64 0, i64 0), i8* getelementptr inbounds ([4 x i8]* @.str3, i64 0, i64 0)]
|
||
|
|
|
||
|
|
define i32 @f(i32 %c) {
|
||
|
|
entry:
|
||
|
|
%switch.tableidx = sub i32 %c, 42
|
||
|
|
%0 = icmp ult i32 %switch.tableidx, 7
|
||
|
|
br i1 %0, label %switch.lookup, label %return
|
||
|
|
|
||
|
|
switch.lookup:
|
||
|
|
%switch.gep = getelementptr inbounds [7 x i32]* @switch.table, i32 0, i32 %switch.tableidx
|
||
|
|
%switch.load = load i32* %switch.gep
|
||
|
|
ret i32 %switch.load
|
||
|
|
|
||
|
|
return:
|
||
|
|
ret i32 15
|
||
|
|
|
||
|
|
; CHECK: f:
|
||
|
|
; CHECK: %switch.lookup
|
||
|
|
; CHECK-NOT: sethi %hi(.Lswitch.table)
|
||
|
|
}
|
||
|
|
|
||
|
|
declare void @dummy(i8 signext, float)
|
||
|
|
|
||
|
|
define void @h(i32 %x) {
|
||
|
|
entry:
|
||
|
|
%switch.tableidx = sub i32 %x, 0
|
||
|
|
%0 = icmp ult i32 %switch.tableidx, 4
|
||
|
|
br i1 %0, label %switch.lookup, label %sw.epilog
|
||
|
|
|
||
|
|
switch.lookup:
|
||
|
|
%switch.gep = getelementptr inbounds [4 x i8]* @switch.table1, i32 0, i32 %switch.tableidx
|
||
|
|
%switch.load = load i8* %switch.gep
|
||
|
|
%switch.gep1 = getelementptr inbounds [4 x float]* @switch.table2, i32 0, i32 %switch.tableidx
|
||
|
|
%switch.load2 = load float* %switch.gep1
|
||
|
|
br label %sw.epilog
|
||
|
|
|
||
|
|
sw.epilog:
|
||
|
|
%a.0 = phi i8 [ %switch.load, %switch.lookup ], [ 7, %entry ]
|
||
|
|
%b.0 = phi float [ %switch.load2, %switch.lookup ], [ 0x4023FAE140000000, %entry ]
|
||
|
|
call void @dummy(i8 signext %a.0, float %b.0)
|
||
|
|
ret void
|
||
|
|
|
||
|
|
; CHECK: h:
|
||
|
|
; CHECK: %switch.lookup
|
||
|
|
; CHECK-NOT: sethi %hi(.Lswitch.table{{[0-9]}})
|
||
|
|
; CHECK-NOT: sethi %hi(.Lswitch.table{{[0-9]}})
|
||
|
|
}
|
||
|
|
|
||
|
|
define i8* @foostring(i32 %x) {
|
||
|
|
entry:
|
||
|
|
%switch.tableidx = sub i32 %x, 0
|
||
|
|
%0 = icmp ult i32 %switch.tableidx, 4
|
||
|
|
br i1 %0, label %switch.lookup, label %return
|
||
|
|
|
||
|
|
switch.lookup:
|
||
|
|
%switch.gep = getelementptr inbounds [4 x i8*]* @switch.table3, i32 0, i32 %switch.tableidx
|
||
|
|
%switch.load = load i8** %switch.gep
|
||
|
|
ret i8* %switch.load
|
||
|
|
|
||
|
|
return:
|
||
|
|
ret i8* getelementptr inbounds ([6 x i8]* @.str4, i64 0, i64 0)
|
||
|
|
|
||
|
|
; CHECK: foostring:
|
||
|
|
; CHECK: %switch.lookup
|
||
|
|
; CHECK-NOT: sethi %hi(.Lswitch.table3)
|
||
|
|
}
|
||
|
|
|
||
|
|
; CHECK-NOT: .Lswitch.table
|
||
|
|
; CHECK-NOT: .Lswitch.table1
|
||
|
|
; CHECK-NOT: .Lswitch.table2
|
||
|
|
; CHECK-NOT: .Lswitch.table3
|