diff options
Diffstat (limited to 'llvm')
| -rw-r--r-- | llvm/lib/Target/Hexagon/HexagonTargetObjectFile.cpp | 9 | ||||
| -rw-r--r-- | llvm/lib/Target/Hexagon/HexagonTargetObjectFile.h | 3 | ||||
| -rw-r--r-- | llvm/test/CodeGen/Hexagon/jt-in-text.ll | 57 |
3 files changed, 69 insertions, 0 deletions
diff --git a/llvm/lib/Target/Hexagon/HexagonTargetObjectFile.cpp b/llvm/lib/Target/Hexagon/HexagonTargetObjectFile.cpp index 4dacb150139..34df2ebcc52 100644 --- a/llvm/lib/Target/Hexagon/HexagonTargetObjectFile.cpp +++ b/llvm/lib/Target/Hexagon/HexagonTargetObjectFile.cpp @@ -49,6 +49,10 @@ static cl::opt<bool> TraceGVPlacement("trace-gv-placement", cl::Hidden, cl::init(false), cl::desc("Trace global value placement")); +static cl::opt<bool> + EmitJtInText("hexagon-emit-jt-text", cl::Hidden, cl::init(false), + cl::desc("Emit hexagon jump tables in function section")); + // TraceGVPlacement controls messages for all builds. For builds with assertions // (debug or release), messages are also controlled by the usual debug flags // (e.g. -debug and -debug-only=globallayout) @@ -256,6 +260,11 @@ unsigned HexagonTargetObjectFile::getSmallDataSize() const { return SmallDataThreshold; } +bool HexagonTargetObjectFile::shouldPutJumpTableInFunctionSection( + bool UsesLabelDifference, const Function &F) const { + return EmitJtInText; +} + /// Descends any type down to "elementary" components, /// discovering the smallest addressable one. /// If zero is returned, declaration will not be modified. diff --git a/llvm/lib/Target/Hexagon/HexagonTargetObjectFile.h b/llvm/lib/Target/Hexagon/HexagonTargetObjectFile.h index 58dff2b95e1..373d850b53b 100644 --- a/llvm/lib/Target/Hexagon/HexagonTargetObjectFile.h +++ b/llvm/lib/Target/Hexagon/HexagonTargetObjectFile.h @@ -33,6 +33,9 @@ namespace llvm { unsigned getSmallDataSize() const; + bool shouldPutJumpTableInFunctionSection(bool UsesLabelDifference, + const Function &F) const override; + private: MCSectionELF *SmallDataSection; MCSectionELF *SmallBSSSection; diff --git a/llvm/test/CodeGen/Hexagon/jt-in-text.ll b/llvm/test/CodeGen/Hexagon/jt-in-text.ll new file mode 100644 index 00000000000..62b5caef6aa --- /dev/null +++ b/llvm/test/CodeGen/Hexagon/jt-in-text.ll @@ -0,0 +1,57 @@ +; RUN: llc -hexagon-emit-jt-text=true < %s | FileCheck %s +target datalayout = "e-m:e-p:32:32:32-a:0-n16:32-i64:64:64-i32:32:32-i16:16:16-i1:8:8-f32:32:32-f64:64:64-v32:32:32-v64:64:64-v512:512:512-v1024:1024:1024-v2048:2048:2048" +target triple = "hexagon-unknown--elf" + +; CHECK: .text +; CHECK-NOT: .rodata +; CHECK: .word + +@lane0_pwr_st = global i32 0, align 4 +@lane1_pwr_st = global i32 0, align 4 +@lane2_pwr_st = global i32 0, align 4 +@lane3_pwr_st = global i32 0, align 4 + +; Function Attrs: noinline nounwind +define void @test2(i32 %lane_id, i32 %rx_pwr_st) #0 { +entry: + %lane_id.addr = alloca i32, align 4 + %rx_pwr_st.addr = alloca i32, align 4 + store i32 %lane_id, i32* %lane_id.addr, align 4 + store i32 %rx_pwr_st, i32* %rx_pwr_st.addr, align 4 + %0 = load i32, i32* %lane_id.addr, align 4 + switch i32 %0, label %sw.epilog [ + i32 0, label %sw.bb + i32 1, label %sw.bb1 + i32 2, label %sw.bb2 + i32 3, label %sw.bb3 + i32 15, label %sw.bb4 + ] + +sw.bb: ; preds = %entry + store i32 1, i32* @lane0_pwr_st, align 4 + br label %sw.epilog + +sw.bb1: ; preds = %entry + store i32 1, i32* @lane1_pwr_st, align 4 + br label %sw.epilog + +sw.bb2: ; preds = %entry + store i32 1, i32* @lane2_pwr_st, align 4 + br label %sw.epilog + +sw.bb3: ; preds = %entry + store i32 1, i32* @lane3_pwr_st, align 4 + br label %sw.epilog + +sw.bb4: ; preds = %entry + store i32 1, i32* @lane0_pwr_st, align 4 + store i32 1, i32* @lane1_pwr_st, align 4 + store i32 1, i32* @lane2_pwr_st, align 4 + store i32 1, i32* @lane3_pwr_st, align 4 + br label %sw.epilog + +sw.epilog: ; preds = %entry, %sw.bb4, %sw.bb3, %sw.bb2, %sw.bb1, %sw.bb + ret void +} + +attributes #0 = { noinline nounwind "correctly-rounded-divide-sqrt-fp-math"="false" "disable-tail-calls"="false" "less-precise-fpmad"="false" "no-frame-pointer-elim"="true" "no-frame-pointer-elim-non-leaf" "no-infs-fp-math"="false" "no-jump-tables"="false" "no-nans-fp-math"="false" "no-signed-zeros-fp-math"="false" "no-trapping-math"="false" "stack-protector-buffer-size"="8" "target-cpu"="hexagonv60" "target-features"="-hvx-double,-long-calls" "unsafe-fp-math"="false" "use-soft-float"="false" } |
