| ; RUN: llc -mcpu=pwr7 -O0 -code-model=medium <%s | FileCheck %s |
| ; RUN: llc -mcpu=pwr7 -O0 -code-model=large <%s | FileCheck %s |
| |
| ; Test correct code generation for medium and large code model |
| ; for loading the address of a jump table from the TOC. |
| |
| 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-f128:128:128-v128:128:128-n32:64" |
| target triple = "powerpc64-unknown-linux-gnu" |
| |
| define signext i32 @test_jump_table(i32 signext %i) nounwind { |
| entry: |
| %i.addr = alloca i32, align 4 |
| store i32 %i, i32* %i.addr, align 4 |
| %0 = load i32* %i.addr, align 4 |
| switch i32 %0, label %sw.default [ |
| i32 3, label %sw.bb |
| i32 4, label %sw.bb1 |
| i32 5, label %sw.bb2 |
| i32 6, label %sw.bb3 |
| ] |
| |
| sw.default: ; preds = %entry |
| br label %sw.epilog |
| |
| sw.bb: ; preds = %entry |
| %1 = load i32* %i.addr, align 4 |
| %mul = mul nsw i32 %1, 7 |
| store i32 %mul, i32* %i.addr, align 4 |
| br label %sw.bb1 |
| |
| sw.bb1: ; preds = %entry, %sw.bb |
| %2 = load i32* %i.addr, align 4 |
| %dec = add nsw i32 %2, -1 |
| store i32 %dec, i32* %i.addr, align 4 |
| br label %sw.bb2 |
| |
| sw.bb2: ; preds = %entry, %sw.bb1 |
| %3 = load i32* %i.addr, align 4 |
| %add = add nsw i32 %3, 3 |
| store i32 %add, i32* %i.addr, align 4 |
| br label %sw.bb3 |
| |
| sw.bb3: ; preds = %entry, %sw.bb2 |
| %4 = load i32* %i.addr, align 4 |
| %shl = shl i32 %4, 1 |
| store i32 %shl, i32* %i.addr, align 4 |
| br label %sw.epilog |
| |
| sw.epilog: ; preds = %sw.bb3, %sw.default |
| %5 = load i32* %i.addr, align 4 |
| ret i32 %5 |
| } |
| |
| ; CHECK: test_jump_table: |
| ; CHECK: addis [[REG1:[0-9]+]], 2, .LC[[TOCNUM:[0-9]+]]@toc@ha |
| ; CHECK: ld [[REG2:[0-9]+]], .LC[[TOCNUM]]@toc@l([[REG1]]) |
| ; CHECK: ldx {{[0-9]+}}, {{[0-9]+}}, [[REG2]] |
| ; CHECK: .section .toc |
| ; CHECK: .LC[[TOCNUM]]: |
| ; CHECK: .tc {{[a-z0-9A-Z_.]+}}[TC],{{[a-z0-9A-Z_.]+}} |
