5403c59c60
The LIT test cases were migrated with the script provided by Nikita Popov. Due to the size of the change it is split into several parts. Reviewed By: nemanja, nikic Differential Revision: https://reviews.llvm.org/D135474
143 lines
3.8 KiB
LLVM
143 lines
3.8 KiB
LLVM
; Test that accesses of the stack remain within the range defined by R1,
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; i.e. that loads and stores only access the allocated stack. This does not
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; have to be the case when red zone is present.
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; Make sure that there is no red zone, i.e. ppc32 and SVR4 ABI.
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; RUN: llc -mtriple=powerpc--freebsd-elf < %s | FileCheck %s
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; There are two ways that the stack pointer can be adjusted in the prologue:
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; - by adding an immediate value:
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; stwu r1, -imm(r1)
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; - by adding another register:
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; stwux r1, rx, r1
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;
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; The restoring of the stack pointer can be done:
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; - by adding an immediate value to it:
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; addi r1, r1, imm
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; - by copying the value from another register:
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; mr r1, rx
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; Nothing (no special features).
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;
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; CHECK-LABEL: test_n:
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; CHECK-NOT: stw {{[0-9]+}}, -{{[0-9]+}}(1)
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; CHECK: stwu 1, -[[SIZE:[0-9]+]](1)
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; CHECK: addi 1, 1, [[SIZE]]
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; CHECK-NOT: lwz {{[0-9]+}}, -{{[0-9]+}}(1)
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define i32 @test_n() local_unnamed_addr #0 {
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entry:
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%t0 = tail call i32 @bar0() #0
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ret i32 %t0
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}
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; Aligned object on the stack.
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;
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; CHECK-LABEL: test_a:
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; CHECK-NOT: stw {{[0-9]+}}, -{{[0-9]+}}(1)
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; CHECK: stwux 1, 1, {{[0-9]+}}
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; CHECK: mr 1, {{[0-9]+}}
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; CHECK-NOT: lwz {{[0-9]+}}, -{{[0-9]+}}(1)
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define i32 @test_a() local_unnamed_addr #0 {
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entry:
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%t0 = alloca i32, align 128
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%t1 = tail call i32 @bar1(ptr %t0) #0
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ret i32 %t1
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}
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; Dynamic allocation on the stack.
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;
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; CHECK-LABEL: test_d:
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; CHECK-NOT: stw {{[0-9]+}}, -{{[0-9]+}}(1)
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; CHECK: stwu 1, -[[SIZE:[0-9]+]](1)
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; CHECK: mr 1, {{[0-9]+}}
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; CHECK-NOT: lwz {{[0-9]+}}, -{{[0-9]+}}(1)
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define i32 @test_d(i32 %p0) local_unnamed_addr #0 {
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%t0 = alloca i32, i32 %p0, align 4
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%t1 = tail call i32 @bar1(ptr %t0) #0
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ret i32 %t1
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}
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; Large stack (exceeds size of D-field).
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; CHECK-LABEL: test_s:
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; CHECK-NOT: stw {{[0-9]+}}, -{{[0-9]+}}(1)
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; CHECK: stwux 1, 1, {{[0-9]+}}
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; CHECK: mr 1, {{[0-9]+}}
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; CHECK-NOT: lwz {{[0-9]+}}, -{{[0-9]+}}(1)
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define i32 @test_s(i32 %p0) local_unnamed_addr #0 {
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entry:
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%t0 = alloca [16384 x i32]
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%t2 = tail call i32 @bar1(ptr %t0) #0
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ret i32 %t2
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}
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; Combinations.
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; CHECK-LABEL: test_ad:
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; CHECK-NOT: stw {{[0-9]+}}, -{{[0-9]+}}(1)
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; CHECK: stwux 1, 1, {{[0-9]+}}
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; CHECK: mr 1, {{[0-9]+}}
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; CHECK-NOT: lwz {{[0-9]+}}, -{{[0-9]+}}(1)
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define i32 @test_ad(i32 %p0) local_unnamed_addr #0 {
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%t0 = alloca i32, align 128
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%t1 = alloca i32, i32 %p0, align 4
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%t2 = tail call i32 @bar1(ptr %t0) #0
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%t3 = tail call i32 @bar1(ptr %t1) #0
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%t4 = add i32 %t2, %t3
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ret i32 %t4
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}
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; CHECK-LABEL: test_as:
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; CHECK-NOT: stw {{[0-9]+}}, -{{[0-9]+}}(1)
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; CHECK: stwux 1, 1, {{[0-9]+}}
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; CHECK: mr 1, {{[0-9]+}}
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; CHECK-NOT: lwz {{[0-9]+}}, -{{[0-9]+}}(1)
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define i32 @test_as() local_unnamed_addr #0 {
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%t0 = alloca i32, align 128
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%t1 = alloca [16384 x i32]
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%t2 = tail call i32 @bar1(ptr %t0) #0
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%t4 = tail call i32 @bar1(ptr %t1) #0
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%t5 = add i32 %t2, %t4
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ret i32 %t5
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}
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; CHECK-LABEL: test_ds:
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; CHECK-NOT: stw {{[0-9]+}}, -{{[0-9]+}}(1)
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; CHECK: stwux 1, 1, {{[0-9]+}}
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; CHECK: mr 1, {{[0-9]+}}
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; CHECK-NOT: lwz {{[0-9]+}}, -{{[0-9]+}}(1)
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define i32 @test_ds(i32 %p0) local_unnamed_addr #0 {
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%t0 = alloca i32, i32 %p0, align 4
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%t1 = alloca [16384 x i32]
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%t2 = tail call i32 @bar1(ptr %t0) #0
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%t4 = tail call i32 @bar1(ptr %t1) #0
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%t5 = add i32 %t2, %t4
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ret i32 %t5
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}
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; CHECK-LABEL: test_ads:
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; CHECK-NOT: stw {{[0-9]+}}, -{{[0-9]+}}(1)
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; CHECK: stwux 1, 1, {{[0-9]+}}
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; CHECK: mr 1, {{[0-9]+}}
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; CHECK-NOT: lwz {{[0-9]+}}, -{{[0-9]+}}(1)
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define i32 @test_ads(i32 %p0) local_unnamed_addr #0 {
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%t0 = alloca i32, align 128
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%t1 = alloca i32, i32 %p0, align 4
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%t2 = alloca [16384 x i32]
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%t3 = tail call i32 @bar1(ptr %t0) #0
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%t4 = tail call i32 @bar1(ptr %t1) #0
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%t5 = add i32 %t3, %t4
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%t7 = tail call i32 @bar1(ptr %t2) #0
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%t8 = add i32 %t5, %t7
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ret i32 %t7
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}
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declare i32 @bar0(...) local_unnamed_addr #0
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declare i32 @bar1(...) local_unnamed_addr #0
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attributes #0 = { nounwind }
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