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llvm-project/llvm/test/CodeGen/X86/x86-64-jumps.ll

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improve x86 codegen support for blockaddress. We now compile the testcase into: _test1: ## @test1 ## BB#0: ## %entry leaq L_test1_bb6(%rip), %rax jmpq *%rax L_test1_bb: ## Address Taken LBB1_1: ## %bb movb $1, %al ret L_test1_bb6: ## Address Taken LBB1_2: ## %bb6 movb $2, %al ret Note, it is very very strange that BlockAddressSDNode doesn't carry around TargetFlags. Dan, please fix this. llvm-svn: 85703
2009-11-01 11:25:03 +08:00
; RUN: llc < %s
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-darwin10.0"
define i8 @test1() nounwind ssp {
entry:
%0 = select i1 undef, i8* blockaddress(@test1, %bb), i8* blockaddress(@test1, %bb6) ; <i8*> [#uses=1]
indirectbr i8* %0, [label %bb, label %bb6]
bb: ; preds = %entry
ret i8 1
bb6: ; preds = %entry
ret i8 2
}
fix PR5930, allowing the asmprinter to emit difference between two labels as a truncate. llvm-svn: 92455
2010-01-04 02:33:18 +08:00
; PR5930 - Trunc of block address differences.
@test.array = internal constant [3 x i32] [i32 trunc (i64 sub (i64 ptrtoint (i8* blockaddress(@test2, %foo) to i64), i64 ptrtoint (i8* blockaddress(@test2, %foo) to i64)) to i32), i32 trunc (i64 sub (i64 ptrtoint (i8* blockaddress(@test2, %bar) to i64), i64 ptrtoint (i8* blockaddress(@test2, %foo) to i64)) to i32), i32 trunc (i64 sub (i64 ptrtoint (i8* blockaddress(@test2, %hack) to i64), i64 ptrtoint (i8* blockaddress(@test2, %foo) to i64)) to i32)] ; <[3 x i32]*> [#uses=1]
define void @test2(i32 %i) nounwind ssp {
entry:
%i.addr = alloca i32 ; <i32*> [#uses=2]
store i32 %i, i32* %i.addr
%tmp = load i32* %i.addr ; <i32> [#uses=1]
%idxprom = sext i32 %tmp to i64 ; <i64> [#uses=1]
%arrayidx = getelementptr inbounds i32* getelementptr inbounds ([3 x i32]* @test.array, i32 0, i32 0), i64 %idxprom ; <i32*> [#uses=1]
%tmp1 = load i32* %arrayidx ; <i32> [#uses=1]
%idx.ext = sext i32 %tmp1 to i64 ; <i64> [#uses=1]
%add.ptr = getelementptr i8* blockaddress(@test2, %foo), i64 %idx.ext ; <i8*> [#uses=1]
br label %indirectgoto
foo: ; preds = %indirectgoto, %indirectgoto, %indirectgoto, %indirectgoto, %indirectgoto
br label %bar
bar: ; preds = %foo, %indirectgoto
br label %hack
hack: ; preds = %bar, %indirectgoto
ret void
indirectgoto: ; preds = %entry
%indirect.goto.dest = phi i8* [ %add.ptr, %entry ] ; <i8*> [#uses=1]
indirectbr i8* %indirect.goto.dest, [label %foo, label %foo, label %bar, label %foo, label %hack, label %foo, label %foo]
}