| John Bauman | 66b8ab2 | 2014-05-06 15:57:45 -0400 | [diff] [blame] | 1 | ; RUN: llc -O3 < %s | FileCheck %s |
| 2 | target datalayout = "e-p:32:32:32-i1:8:32-i8:8:32-i16:16:32-i32:32:32-i64:32:32-f32:32:32-f64:32:32-v64:64:64-v128:128:128-a0:0:32-n32" |
| 3 | target triple = "thumbv7-apple-darwin10" |
| 4 | |
| 5 | ; This test should not produce any spills, even when tail duplication creates lots of phi nodes. |
| 6 | ; CHECK-NOT: push |
| 7 | ; CHECK-NOT: pop |
| 8 | ; CHECK: bx lr |
| 9 | |
| 10 | @codetable.2928 = internal constant [5 x i8*] [i8* blockaddress(@interpret_threaded, %RETURN), i8* blockaddress(@interpret_threaded, %INCREMENT), i8* blockaddress(@interpret_threaded, %DECREMENT), i8* blockaddress(@interpret_threaded, %DOUBLE), i8* blockaddress(@interpret_threaded, %SWAPWORD)] ; <[5 x i8*]*> [#uses=5] |
| 11 | @llvm.used = appending global [1 x i8*] [i8* bitcast (i32 (i8*)* @interpret_threaded to i8*)], section "llvm.metadata" ; <[1 x i8*]*> [#uses=0] |
| 12 | |
| 13 | define i32 @interpret_threaded(i8* nocapture %opcodes) nounwind readonly optsize { |
| 14 | entry: |
| 15 | %0 = load i8* %opcodes, align 1 ; <i8> [#uses=1] |
| 16 | %1 = zext i8 %0 to i32 ; <i32> [#uses=1] |
| 17 | %2 = getelementptr inbounds [5 x i8*]* @codetable.2928, i32 0, i32 %1 ; <i8**> [#uses=1] |
| 18 | br label %bb |
| 19 | |
| 20 | bb: ; preds = %bb.backedge, %entry |
| 21 | %indvar = phi i32 [ %phitmp, %bb.backedge ], [ 1, %entry ] ; <i32> [#uses=2] |
| 22 | %gotovar.22.0.in = phi i8** [ %gotovar.22.0.in.be, %bb.backedge ], [ %2, %entry ] ; <i8**> [#uses=1] |
| 23 | %result.0 = phi i32 [ %result.0.be, %bb.backedge ], [ 0, %entry ] ; <i32> [#uses=6] |
| 24 | %opcodes_addr.0 = getelementptr i8* %opcodes, i32 %indvar ; <i8*> [#uses=4] |
| 25 | %gotovar.22.0 = load i8** %gotovar.22.0.in, align 4 ; <i8*> [#uses=1] |
| 26 | indirectbr i8* %gotovar.22.0, [label %RETURN, label %INCREMENT, label %DECREMENT, label %DOUBLE, label %SWAPWORD] |
| 27 | |
| 28 | RETURN: ; preds = %bb |
| 29 | ret i32 %result.0 |
| 30 | |
| 31 | INCREMENT: ; preds = %bb |
| 32 | %3 = add nsw i32 %result.0, 1 ; <i32> [#uses=1] |
| 33 | %4 = load i8* %opcodes_addr.0, align 1 ; <i8> [#uses=1] |
| 34 | %5 = zext i8 %4 to i32 ; <i32> [#uses=1] |
| 35 | %6 = getelementptr inbounds [5 x i8*]* @codetable.2928, i32 0, i32 %5 ; <i8**> [#uses=1] |
| 36 | br label %bb.backedge |
| 37 | |
| 38 | bb.backedge: ; preds = %SWAPWORD, %DOUBLE, %DECREMENT, %INCREMENT |
| 39 | %gotovar.22.0.in.be = phi i8** [ %20, %SWAPWORD ], [ %14, %DOUBLE ], [ %10, %DECREMENT ], [ %6, %INCREMENT ] ; <i8**> [#uses=1] |
| 40 | %result.0.be = phi i32 [ %17, %SWAPWORD ], [ %11, %DOUBLE ], [ %7, %DECREMENT ], [ %3, %INCREMENT ] ; <i32> [#uses=1] |
| 41 | %phitmp = add i32 %indvar, 1 ; <i32> [#uses=1] |
| 42 | br label %bb |
| 43 | |
| 44 | DECREMENT: ; preds = %bb |
| 45 | %7 = add i32 %result.0, -1 ; <i32> [#uses=1] |
| 46 | %8 = load i8* %opcodes_addr.0, align 1 ; <i8> [#uses=1] |
| 47 | %9 = zext i8 %8 to i32 ; <i32> [#uses=1] |
| 48 | %10 = getelementptr inbounds [5 x i8*]* @codetable.2928, i32 0, i32 %9 ; <i8**> [#uses=1] |
| 49 | br label %bb.backedge |
| 50 | |
| 51 | DOUBLE: ; preds = %bb |
| 52 | %11 = shl i32 %result.0, 1 ; <i32> [#uses=1] |
| 53 | %12 = load i8* %opcodes_addr.0, align 1 ; <i8> [#uses=1] |
| 54 | %13 = zext i8 %12 to i32 ; <i32> [#uses=1] |
| 55 | %14 = getelementptr inbounds [5 x i8*]* @codetable.2928, i32 0, i32 %13 ; <i8**> [#uses=1] |
| 56 | br label %bb.backedge |
| 57 | |
| 58 | SWAPWORD: ; preds = %bb |
| 59 | %15 = shl i32 %result.0, 16 ; <i32> [#uses=1] |
| 60 | %16 = ashr i32 %result.0, 16 ; <i32> [#uses=1] |
| 61 | %17 = or i32 %15, %16 ; <i32> [#uses=1] |
| 62 | %18 = load i8* %opcodes_addr.0, align 1 ; <i8> [#uses=1] |
| 63 | %19 = zext i8 %18 to i32 ; <i32> [#uses=1] |
| 64 | %20 = getelementptr inbounds [5 x i8*]* @codetable.2928, i32 0, i32 %19 ; <i8**> [#uses=1] |
| 65 | br label %bb.backedge |
| 66 | } |
