diff options
Diffstat (limited to 'llvm/test/Transforms/SimplifyCFG/merge-cond-stores-2.ll')
| -rw-r--r-- | llvm/test/Transforms/SimplifyCFG/merge-cond-stores-2.ll | 215 |
1 files changed, 215 insertions, 0 deletions
diff --git a/llvm/test/Transforms/SimplifyCFG/merge-cond-stores-2.ll b/llvm/test/Transforms/SimplifyCFG/merge-cond-stores-2.ll new file mode 100644 index 00000000000..fe498b5334e --- /dev/null +++ b/llvm/test/Transforms/SimplifyCFG/merge-cond-stores-2.ll @@ -0,0 +1,215 @@ +; RUN: opt -S < %s -simplifycfg -simplifycfg-merge-cond-stores=true -simplifycfg-merge-cond-stores-aggressively=false -phi-node-folding-threshold=2 | FileCheck %s + +target datalayout = "e-m:e-p:32:32-i64:64-v128:64:128-a:0:32-n32-S64" +target triple = "armv7--linux-gnueabihf" + +; This is a bit reversal that has been run through the early optimizer (-mem2reg -gvn -instcombine). +; There should be no additional PHIs created at all. The store should be on its own in a predicated +; block and there should be no PHIs. + +; CHECK-LABEL: @f +; Exactly 15 phis, as there are 15 in the original test case. +; CHECK: select +; CHECK: select +; CHECK: select +; CHECK: select +; CHECK: select +; CHECK: select +; CHECK: select +; CHECK: select +; CHECK: select +; CHECK: select +; CHECK: select +; CHECK: select +; CHECK: select +; CHECK: select +; CHECK: select +; CHECK: select +; CHECK-NOT: select +; CHECK: br i1 {{.*}}, label %[[L:.*]], label %[[R:.*]] +; CHECK: [[L]] ; preds = +; CHECK-NEXT: store +; CHECK-NEXT: br label %[[R]] +; CHECK: [[R]] ; preds = +; CHECK-NEXT: ret i32 0 + +define i32 @f(i32* %b) { +entry: + %0 = load i32, i32* %b, align 4 + %and = and i32 %0, 1 + %tobool = icmp eq i32 %and, 0 + br i1 %tobool, label %if.end, label %if.then + +if.then: ; preds = %entry + %or = or i32 %0, -2147483648 + store i32 %or, i32* %b, align 4 + br label %if.end + +if.end: ; preds = %entry, %if.then + %1 = phi i32 [ %0, %entry ], [ %or, %if.then ] + %and1 = and i32 %1, 2 + %tobool2 = icmp eq i32 %and1, 0 + br i1 %tobool2, label %if.end5, label %if.then3 + +if.then3: ; preds = %if.end + %or4 = or i32 %1, 1073741824 + store i32 %or4, i32* %b, align 4 + br label %if.end5 + +if.end5: ; preds = %if.end, %if.then3 + %2 = phi i32 [ %1, %if.end ], [ %or4, %if.then3 ] + %and6 = and i32 %2, 4 + %tobool7 = icmp eq i32 %and6, 0 + br i1 %tobool7, label %if.end10, label %if.then8 + +if.then8: ; preds = %if.end5 + %or9 = or i32 %2, 536870912 + store i32 %or9, i32* %b, align 4 + br label %if.end10 + +if.end10: ; preds = %if.end5, %if.then8 + %3 = phi i32 [ %2, %if.end5 ], [ %or9, %if.then8 ] + %and11 = and i32 %3, 8 + %tobool12 = icmp eq i32 %and11, 0 + br i1 %tobool12, label %if.end15, label %if.then13 + +if.then13: ; preds = %if.end10 + %or14 = or i32 %3, 268435456 + store i32 %or14, i32* %b, align 4 + br label %if.end15 + +if.end15: ; preds = %if.end10, %if.then13 + %4 = phi i32 [ %3, %if.end10 ], [ %or14, %if.then13 ] + %and16 = and i32 %4, 16 + %tobool17 = icmp eq i32 %and16, 0 + br i1 %tobool17, label %if.end20, label %if.then18 + +if.then18: ; preds = %if.end15 + %or19 = or i32 %4, 134217728 + store i32 %or19, i32* %b, align 4 + br label %if.end20 + +if.end20: ; preds = %if.end15, %if.then18 + %5 = phi i32 [ %4, %if.end15 ], [ %or19, %if.then18 ] + %and21 = and i32 %5, 32 + %tobool22 = icmp eq i32 %and21, 0 + br i1 %tobool22, label %if.end25, label %if.then23 + +if.then23: ; preds = %if.end20 + %or24 = or i32 %5, 67108864 + store i32 %or24, i32* %b, align 4 + br label %if.end25 + +if.end25: ; preds = %if.end20, %if.then23 + %6 = phi i32 [ %5, %if.end20 ], [ %or24, %if.then23 ] + %and26 = and i32 %6, 64 + %tobool27 = icmp eq i32 %and26, 0 + br i1 %tobool27, label %if.end30, label %if.then28 + +if.then28: ; preds = %if.end25 + %or29 = or i32 %6, 33554432 + store i32 %or29, i32* %b, align 4 + br label %if.end30 + +if.end30: ; preds = %if.end25, %if.then28 + %7 = phi i32 [ %6, %if.end25 ], [ %or29, %if.then28 ] + %and31 = and i32 %7, 256 + %tobool32 = icmp eq i32 %and31, 0 + br i1 %tobool32, label %if.end35, label %if.then33 + +if.then33: ; preds = %if.end30 + %or34 = or i32 %7, 8388608 + store i32 %or34, i32* %b, align 4 + br label %if.end35 + +if.end35: ; preds = %if.end30, %if.then33 + %8 = phi i32 [ %7, %if.end30 ], [ %or34, %if.then33 ] + %and36 = and i32 %8, 512 + %tobool37 = icmp eq i32 %and36, 0 + br i1 %tobool37, label %if.end40, label %if.then38 + +if.then38: ; preds = %if.end35 + %or39 = or i32 %8, 4194304 + store i32 %or39, i32* %b, align 4 + br label %if.end40 + +if.end40: ; preds = %if.end35, %if.then38 + %9 = phi i32 [ %8, %if.end35 ], [ %or39, %if.then38 ] + %and41 = and i32 %9, 1024 + %tobool42 = icmp eq i32 %and41, 0 + br i1 %tobool42, label %if.end45, label %if.then43 + +if.then43: ; preds = %if.end40 + %or44 = or i32 %9, 2097152 + store i32 %or44, i32* %b, align 4 + br label %if.end45 + +if.end45: ; preds = %if.end40, %if.then43 + %10 = phi i32 [ %9, %if.end40 ], [ %or44, %if.then43 ] + %and46 = and i32 %10, 2048 + %tobool47 = icmp eq i32 %and46, 0 + br i1 %tobool47, label %if.end50, label %if.then48 + +if.then48: ; preds = %if.end45 + %or49 = or i32 %10, 1048576 + store i32 %or49, i32* %b, align 4 + br label %if.end50 + +if.end50: ; preds = %if.end45, %if.then48 + %11 = phi i32 [ %10, %if.end45 ], [ %or49, %if.then48 ] + %and51 = and i32 %11, 4096 + %tobool52 = icmp eq i32 %and51, 0 + br i1 %tobool52, label %if.end55, label %if.then53 + +if.then53: ; preds = %if.end50 + %or54 = or i32 %11, 524288 + store i32 %or54, i32* %b, align 4 + br label %if.end55 + +if.end55: ; preds = %if.end50, %if.then53 + %12 = phi i32 [ %11, %if.end50 ], [ %or54, %if.then53 ] + %and56 = and i32 %12, 8192 + %tobool57 = icmp eq i32 %and56, 0 + br i1 %tobool57, label %if.end60, label %if.then58 + +if.then58: ; preds = %if.end55 + %or59 = or i32 %12, 262144 + store i32 %or59, i32* %b, align 4 + br label %if.end60 + +if.end60: ; preds = %if.end55, %if.then58 + %13 = phi i32 [ %12, %if.end55 ], [ %or59, %if.then58 ] + %and61 = and i32 %13, 16384 + %tobool62 = icmp eq i32 %and61, 0 + br i1 %tobool62, label %if.end65, label %if.then63 + +if.then63: ; preds = %if.end60 + %or64 = or i32 %13, 131072 + store i32 %or64, i32* %b, align 4 + br label %if.end65 + +if.end65: ; preds = %if.end60, %if.then63 + %14 = phi i32 [ %13, %if.end60 ], [ %or64, %if.then63 ] + %and66 = and i32 %14, 32768 + %tobool67 = icmp eq i32 %and66, 0 + br i1 %tobool67, label %if.end70, label %if.then68 + +if.then68: ; preds = %if.end65 + %or69 = or i32 %14, 65536 + store i32 %or69, i32* %b, align 4 + br label %if.end70 + +if.end70: ; preds = %if.end65, %if.then68 + %15 = phi i32 [ %14, %if.end65 ], [ %or69, %if.then68 ] + %and71 = and i32 %15, 128 + %tobool72 = icmp eq i32 %and71, 0 + br i1 %tobool72, label %if.end75, label %if.then73 + +if.then73: ; preds = %if.end70 + %or74 = or i32 %15, 16777216 + store i32 %or74, i32* %b, align 4 + br label %if.end75 + +if.end75: ; preds = %if.end70, %if.then73 + ret i32 0 +} |
