1 ; RUN: llc -verify-machineinstrs -mcpu=pwr7 -ppc-min-jump-table-entries=4 -code-model=medium <%s | FileCheck %s
2 ; RUN: llc -verify-machineinstrs -mcpu=pwr7 -ppc-min-jump-table-entries=4 -code-model=large <%s | FileCheck -check-prefix=LARGE %s
4 ; Test correct code generation for medium and large code model
5 ; for loading the address of a jump table from the TOC.
7 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"
8 target triple = "powerpc64-unknown-linux-gnu"
10 define signext i32 @test_jump_table(i32 signext %i) nounwind {
12 %i.addr = alloca i32, align 4
13 store i32 %i, ptr %i.addr, align 4
14 %0 = load i32, ptr %i.addr, align 4
15 switch i32 %0, label %sw.default [
22 sw.default: ; preds = %entry
25 sw.bb: ; preds = %entry
26 %1 = load i32, ptr %i.addr, align 4
27 %mul = mul nsw i32 %1, 7
28 store i32 %mul, ptr %i.addr, align 4
31 sw.bb1: ; preds = %entry, %sw.bb
32 %2 = load i32, ptr %i.addr, align 4
33 %dec = add nsw i32 %2, -1
34 store i32 %dec, ptr %i.addr, align 4
37 sw.bb2: ; preds = %entry, %sw.bb1
38 %3 = load i32, ptr %i.addr, align 4
39 %add = add nsw i32 %3, 3
40 store i32 %add, ptr %i.addr, align 4
43 sw.bb3: ; preds = %entry, %sw.bb2
44 %4 = load i32, ptr %i.addr, align 4
46 store i32 %shl, ptr %i.addr, align 4
49 sw.epilog: ; preds = %sw.bb3, %sw.default
50 %5 = load i32, ptr %i.addr, align 4
53 ; CHECK-LABEL: test_jump_table:
54 ; CHECK-NOT: bl .L0$pb
56 ; CHECK: addis [[REG1:[0-9]+]], 2, .LC[[TOCNUM:[0-9]+]]@toc@ha
57 ; CHECK: ld [[REG2:[0-9]+]], .LC[[TOCNUM]]@toc@l([[REG1]])
58 ; CHECK: lwax [[REG3:[0-9]+]], {{[0-9]+}}, [[REG2]]
59 ; CHECK-NEXT: add [[REG4:[0-9]+]], [[REG3]], [[REG2]]
60 ; CHECK-NEXT: mtctr [[REG4]]
63 ; CHECK-LABEL: .LJTI0_0:
64 ; CHECK-NEXT: .long .LBB0_{{[0-9]+}}-.LJTI0_0
66 ; LARGE-LABEL: test_jump_table:
69 ; LARGE: mflr [[REGBASE:[0-9]+]]
71 ; LARGE: addis [[REG1:[0-9]+]], 2, .LC[[TOCNUM:[0-9]+]]@toc@ha
72 ; LARGE: ld [[REG2:[0-9]+]], .LC[[TOCNUM]]@toc@l([[REG1]])
73 ; LARGE: lwax [[REG3:[0-9]+]], {{[0-9]+}}, [[REG2]]
74 ; LARGE-NEXT: add [[REG4:[0-9]+]], [[REG3]], [[REGBASE]]
75 ; LARGE-NEXT: mtctr [[REG4]]
78 ; LARGE-LABEL: .LJTI0_0:
79 ; LARGE-NEXT: .long .LBB0_{{[0-9]+}}-.L0$pb