New test for tail merging

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@51007 91177308-0d34-0410-b5e6-96231b3b80d8

diff --git a/test/CodeGen/X86/2008-05-12-tailmerge-5.ll b/test/CodeGen/X86/2008-05-12-tailmerge-5.ll
new file mode 100644 (file)
index 0000000..8751328
--- /dev/null
+++ b/test/CodeGen/X86/2008-05-12-tailmerge-5.ll
@@ -0,0 +1,145 @@
+; RUN: llvm-as < %s | llc | grep abort | count 1
+; Calls to abort should all be merged
+
+; ModuleID = '5898899.c'
+target datalayout = "e-p:64:64:64-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:64:64-f32:32:32-f64:64:64-v64:64:64-v128:128:128-a0:0:64-s0:64:64-f80:128:128"
+target triple = "x86_64-apple-darwin8"
+       %struct.BoundaryAlignment = type { [3 x i8], i8, i16, i16, i8, [2 x i8] }
+
+define void @passing2(i64 %str.0, i64 %str.1, i16 signext  %s, i32 %j, i8 signext  %c, i16 signext  %t, i16 signext  %u, i8 signext  %d) nounwind  {
+entry:
+       %str_addr = alloca %struct.BoundaryAlignment            ; <%struct.BoundaryAlignment*> [#uses=7]
+       %s_addr = alloca i16            ; <i16*> [#uses=1]
+       %j_addr = alloca i32            ; <i32*> [#uses=2]
+       %c_addr = alloca i8             ; <i8*> [#uses=2]
+       %t_addr = alloca i16            ; <i16*> [#uses=2]
+       %u_addr = alloca i16            ; <i16*> [#uses=2]
+       %d_addr = alloca i8             ; <i8*> [#uses=2]
+       %"alloca point" = bitcast i32 0 to i32          ; <i32> [#uses=0]
+       %tmp = bitcast %struct.BoundaryAlignment* %str_addr to { i64, i64 }*            ; <{ i64, i64 }*> [#uses=1]
+       %tmp1 = getelementptr { i64, i64 }* %tmp, i32 0, i32 0          ; <i64*> [#uses=1]
+       store i64 %str.0, i64* %tmp1
+       %tmp2 = bitcast %struct.BoundaryAlignment* %str_addr to { i64, i64 }*           ; <{ i64, i64 }*> [#uses=1]
+       %tmp3 = getelementptr { i64, i64 }* %tmp2, i32 0, i32 1         ; <i64*> [#uses=1]
+       %bc = bitcast i64* %tmp3 to i8*         ; <i8*> [#uses=2]
+       %byte = trunc i64 %str.1 to i8          ; <i8> [#uses=1]
+       store i8 %byte, i8* %bc
+       %shft = lshr i64 %str.1, 8              ; <i64> [#uses=2]
+       %Loc = getelementptr i8* %bc, i32 1             ; <i8*> [#uses=2]
+       %byte4 = trunc i64 %shft to i8          ; <i8> [#uses=1]
+       store i8 %byte4, i8* %Loc
+       %shft5 = lshr i64 %shft, 8              ; <i64> [#uses=2]
+       %Loc6 = getelementptr i8* %Loc, i32 1           ; <i8*> [#uses=2]
+       %byte7 = trunc i64 %shft5 to i8         ; <i8> [#uses=1]
+       store i8 %byte7, i8* %Loc6
+       %shft8 = lshr i64 %shft5, 8             ; <i64> [#uses=2]
+       %Loc9 = getelementptr i8* %Loc6, i32 1          ; <i8*> [#uses=2]
+       %byte10 = trunc i64 %shft8 to i8                ; <i8> [#uses=1]
+       store i8 %byte10, i8* %Loc9
+       %shft11 = lshr i64 %shft8, 8            ; <i64> [#uses=0]
+       %Loc12 = getelementptr i8* %Loc9, i32 1         ; <i8*> [#uses=0]
+       store i16 %s, i16* %s_addr
+       store i32 %j, i32* %j_addr
+       store i8 %c, i8* %c_addr
+       store i16 %t, i16* %t_addr
+       store i16 %u, i16* %u_addr
+       store i8 %d, i8* %d_addr
+       %tmp13 = getelementptr %struct.BoundaryAlignment* %str_addr, i32 0, i32 0               ; <[3 x i8]*> [#uses=1]
+       %tmp1314 = bitcast [3 x i8]* %tmp13 to i32*             ; <i32*> [#uses=1]
+       %tmp15 = load i32* %tmp1314, align 4            ; <i32> [#uses=1]
+       %tmp16 = shl i32 %tmp15, 14             ; <i32> [#uses=1]
+       %tmp17 = ashr i32 %tmp16, 23            ; <i32> [#uses=1]
+       %tmp1718 = trunc i32 %tmp17 to i16              ; <i16> [#uses=1]
+       %sextl = shl i16 %tmp1718, 7            ; <i16> [#uses=1]
+       %sextr = ashr i16 %sextl, 7             ; <i16> [#uses=2]
+       %sextl19 = shl i16 %sextr, 7            ; <i16> [#uses=1]
+       %sextr20 = ashr i16 %sextl19, 7         ; <i16> [#uses=0]
+       %sextl21 = shl i16 %sextr, 7            ; <i16> [#uses=1]
+       %sextr22 = ashr i16 %sextl21, 7         ; <i16> [#uses=1]
+       %sextr2223 = sext i16 %sextr22 to i32           ; <i32> [#uses=1]
+       %tmp24 = load i32* %j_addr, align 4             ; <i32> [#uses=1]
+       %tmp25 = icmp ne i32 %sextr2223, %tmp24         ; <i1> [#uses=1]
+       %tmp2526 = zext i1 %tmp25 to i8         ; <i8> [#uses=1]
+       %toBool = icmp ne i8 %tmp2526, 0                ; <i1> [#uses=1]
+       br i1 %toBool, label %bb, label %bb27
+
+bb:            ; preds = %entry
+       call void (...)* @abort( ) noreturn nounwind 
+       unreachable
+
+bb27:          ; preds = %entry
+       %tmp28 = getelementptr %struct.BoundaryAlignment* %str_addr, i32 0, i32 1               ; <i8*> [#uses=1]
+       %tmp29 = load i8* %tmp28, align 4               ; <i8> [#uses=1]
+       %tmp30 = load i8* %c_addr, align 1              ; <i8> [#uses=1]
+       %tmp31 = icmp ne i8 %tmp29, %tmp30              ; <i1> [#uses=1]
+       %tmp3132 = zext i1 %tmp31 to i8         ; <i8> [#uses=1]
+       %toBool33 = icmp ne i8 %tmp3132, 0              ; <i1> [#uses=1]
+       br i1 %toBool33, label %bb34, label %bb35
+
+bb34:          ; preds = %bb27
+       call void (...)* @abort( ) noreturn nounwind 
+       unreachable
+
+bb35:          ; preds = %bb27
+       %tmp36 = getelementptr %struct.BoundaryAlignment* %str_addr, i32 0, i32 2               ; <i16*> [#uses=1]
+       %tmp37 = load i16* %tmp36, align 4              ; <i16> [#uses=1]
+       %tmp38 = shl i16 %tmp37, 7              ; <i16> [#uses=1]
+       %tmp39 = ashr i16 %tmp38, 7             ; <i16> [#uses=1]
+       %sextl40 = shl i16 %tmp39, 7            ; <i16> [#uses=1]
+       %sextr41 = ashr i16 %sextl40, 7         ; <i16> [#uses=2]
+       %sextl42 = shl i16 %sextr41, 7          ; <i16> [#uses=1]
+       %sextr43 = ashr i16 %sextl42, 7         ; <i16> [#uses=0]
+       %sextl44 = shl i16 %sextr41, 7          ; <i16> [#uses=1]
+       %sextr45 = ashr i16 %sextl44, 7         ; <i16> [#uses=1]
+       %tmp46 = load i16* %t_addr, align 2             ; <i16> [#uses=1]
+       %tmp47 = icmp ne i16 %sextr45, %tmp46           ; <i1> [#uses=1]
+       %tmp4748 = zext i1 %tmp47 to i8         ; <i8> [#uses=1]
+       %toBool49 = icmp ne i8 %tmp4748, 0              ; <i1> [#uses=1]
+       br i1 %toBool49, label %bb50, label %bb51
+
+bb50:          ; preds = %bb35
+       call void (...)* @abort( ) noreturn nounwind 
+       unreachable
+
+bb51:          ; preds = %bb35
+       %tmp52 = getelementptr %struct.BoundaryAlignment* %str_addr, i32 0, i32 3               ; <i16*> [#uses=1]
+       %tmp53 = load i16* %tmp52, align 4              ; <i16> [#uses=1]
+       %tmp54 = shl i16 %tmp53, 7              ; <i16> [#uses=1]
+       %tmp55 = ashr i16 %tmp54, 7             ; <i16> [#uses=1]
+       %sextl56 = shl i16 %tmp55, 7            ; <i16> [#uses=1]
+       %sextr57 = ashr i16 %sextl56, 7         ; <i16> [#uses=2]
+       %sextl58 = shl i16 %sextr57, 7          ; <i16> [#uses=1]
+       %sextr59 = ashr i16 %sextl58, 7         ; <i16> [#uses=0]
+       %sextl60 = shl i16 %sextr57, 7          ; <i16> [#uses=1]
+       %sextr61 = ashr i16 %sextl60, 7         ; <i16> [#uses=1]
+       %tmp62 = load i16* %u_addr, align 2             ; <i16> [#uses=1]
+       %tmp63 = icmp ne i16 %sextr61, %tmp62           ; <i1> [#uses=1]
+       %tmp6364 = zext i1 %tmp63 to i8         ; <i8> [#uses=1]
+       %toBool65 = icmp ne i8 %tmp6364, 0              ; <i1> [#uses=1]
+       br i1 %toBool65, label %bb66, label %bb67
+
+bb66:          ; preds = %bb51
+       call void (...)* @abort( ) noreturn nounwind 
+       unreachable
+
+bb67:          ; preds = %bb51
+       %tmp68 = getelementptr %struct.BoundaryAlignment* %str_addr, i32 0, i32 4               ; <i8*> [#uses=1]
+       %tmp69 = load i8* %tmp68, align 4               ; <i8> [#uses=1]
+       %tmp70 = load i8* %d_addr, align 1              ; <i8> [#uses=1]
+       %tmp71 = icmp ne i8 %tmp69, %tmp70              ; <i1> [#uses=1]
+       %tmp7172 = zext i1 %tmp71 to i8         ; <i8> [#uses=1]
+       %toBool73 = icmp ne i8 %tmp7172, 0              ; <i1> [#uses=1]
+       br i1 %toBool73, label %bb74, label %bb75
+
+bb74:          ; preds = %bb67
+       call void (...)* @abort( ) noreturn nounwind 
+       unreachable
+
+bb75:          ; preds = %bb67
+       br label %return
+
+return:                ; preds = %bb75
+       ret void
+}
+
+declare void @abort(...) noreturn nounwind