new testcase

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31005 91177308-0d34-0410-b5e6-96231b3b80d8

diff --git a/test/CodeGen/PowerPC/branch-opt.ll b/test/CodeGen/PowerPC/branch-opt.ll
new file mode 100644 (file)
index 0000000..1b0f8a4
--- /dev/null
+++ b/test/CodeGen/PowerPC/branch-opt.ll
@@ -0,0 +1,93 @@
+; RUN: llvm-as < %s | llc -march=ppc32 &&
+; RUN: llvm-as < %s | llc -march=ppc32 | not grep 'b LBB.*cond_next48.loopexit'
+
+target endian = big
+target pointersize = 32
+target triple = "powerpc-apple-darwin8.7.0"
+
+implementation   ; Functions:
+
+void %foo(int %W, int %X, int %Y, int %Z) {
+entry:
+       %X = cast int %X to uint                ; <uint> [#uses=1]
+       %Y = cast int %Y to uint                ; <uint> [#uses=1]
+       %Z = cast int %Z to uint                ; <uint> [#uses=1]
+       %W = cast int %W to uint                ; <uint> [#uses=1]
+       %tmp1 = and int %W, 1           ; <int> [#uses=1]
+       %tmp1 = seteq int %tmp1, 0              ; <bool> [#uses=1]
+       br bool %tmp1, label %cond_false, label %bb5
+
+bb:            ; preds = %bb5, %bb
+       %indvar77 = phi uint [ %indvar.next78, %bb ], [ 0, %bb5 ]               ; <uint> [#uses=1]
+       %tmp2 = tail call int (...)* %bar( )            ; <int> [#uses=0]
+       %indvar.next78 = add uint %indvar77, 1          ; <uint> [#uses=2]
+       %exitcond79 = seteq uint %indvar.next78, %X             ; <bool> [#uses=1]
+       br bool %exitcond79, label %cond_next48, label %bb
+
+bb5:           ; preds = %entry
+       %tmp = seteq int %X, 0          ; <bool> [#uses=1]
+       br bool %tmp, label %cond_next48, label %bb
+
+cond_false:            ; preds = %entry
+       %tmp10 = and int %W, 2          ; <int> [#uses=1]
+       %tmp10 = seteq int %tmp10, 0            ; <bool> [#uses=1]
+       br bool %tmp10, label %cond_false20, label %bb16
+
+bb12:          ; preds = %bb16, %bb12
+       %indvar72 = phi uint [ %indvar.next73, %bb12 ], [ 0, %bb16 ]            ; <uint> [#uses=1]
+       %tmp13 = tail call int (...)* %bar( )           ; <int> [#uses=0]
+       %indvar.next73 = add uint %indvar72, 1          ; <uint> [#uses=2]
+       %exitcond74 = seteq uint %indvar.next73, %Y             ; <bool> [#uses=1]
+       br bool %exitcond74, label %cond_next48, label %bb12
+
+bb16:          ; preds = %cond_false
+       %tmp18 = seteq int %Y, 0                ; <bool> [#uses=1]
+       br bool %tmp18, label %cond_next48, label %bb12
+
+cond_false20:          ; preds = %cond_false
+       %tmp23 = and int %W, 4          ; <int> [#uses=1]
+       %tmp23 = seteq int %tmp23, 0            ; <bool> [#uses=1]
+       br bool %tmp23, label %cond_false33, label %bb29
+
+bb25:          ; preds = %bb29, %bb25
+       %indvar67 = phi uint [ %indvar.next68, %bb25 ], [ 0, %bb29 ]            ; <uint> [#uses=1]
+       %tmp26 = tail call int (...)* %bar( )           ; <int> [#uses=0]
+       %indvar.next68 = add uint %indvar67, 1          ; <uint> [#uses=2]
+       %exitcond69 = seteq uint %indvar.next68, %Z             ; <bool> [#uses=1]
+       br bool %exitcond69, label %cond_next48, label %bb25
+
+bb29:          ; preds = %cond_false20
+       %tmp31 = seteq int %Z, 0                ; <bool> [#uses=1]
+       br bool %tmp31, label %cond_next48, label %bb25
+
+cond_false33:          ; preds = %cond_false20
+       %tmp36 = and int %W, 8          ; <int> [#uses=1]
+       %tmp36 = seteq int %tmp36, 0            ; <bool> [#uses=1]
+       br bool %tmp36, label %cond_next48, label %bb42
+
+bb38:          ; preds = %bb42
+       %tmp39 = tail call int (...)* %bar( )           ; <int> [#uses=0]
+       %indvar.next = add uint %indvar, 1              ; <uint> [#uses=1]
+       br label %bb42
+
+bb42:          ; preds = %cond_false33, %bb38
+       %indvar = phi uint [ %indvar.next, %bb38 ], [ 0, %cond_false33 ]                ; <uint> [#uses=3]
+       %indvar = cast uint %indvar to int              ; <int> [#uses=1]
+       %W_addr.0 = sub int %W, %indvar         ; <int> [#uses=1]
+       %exitcond = seteq uint %indvar, %W              ; <bool> [#uses=1]
+       br bool %exitcond, label %cond_next48, label %bb38
+
+cond_next48:           ; preds = %bb, %bb12, %bb25, %bb42, %cond_false33, %bb29, %bb16, %bb5
+       %W_addr.1 = phi int [ %W, %bb5 ], [ %W, %bb16 ], [ %W, %bb29 ], [ %W, %cond_false33 ], [ %W_addr.0, %bb42 ], [ %W, %bb25 ], [ %W, %bb12 ], [ %W, %bb ]          ; <int> [#uses=1]
+       %tmp50 = seteq int %W_addr.1, 0         ; <bool> [#uses=1]
+       br bool %tmp50, label %UnifiedReturnBlock, label %cond_true51
+
+cond_true51:           ; preds = %cond_next48
+       %tmp52 = tail call int (...)* %bar( )           ; <int> [#uses=0]
+       ret void
+
+UnifiedReturnBlock:            ; preds = %cond_next48
+       ret void
+}
+
+declare int %bar(...)